diff ChangeLog @ 0:3dc0c5604566

Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
parents
children a77f0a9ed93c
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ChangeLog	Sat Mar 21 11:00:06 2009 +0000
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+2008-07-03  Dan Creswell <dan@dancres.org>
+
+	* Released 2.0fcs
+	
+2008-03-09  Dan Creswell <dan@dancres.org>
+
+	* Updated to Db 3.2.74
+	
+	* Updated backport-util-concurrent - includes support for JDK 6
+	
+	* Released 2.0-rc4
+	
+2008-03-05  Dan Creswell <dan@dancres.org>
+
+	* Improved EventGenerator registration concurrency
+	
+2008-02-24  Dan Creswell <dan@dancres.org>
+
+	* Added an option (syncNotifyOnWrite) to enable synchronous event processing in 
+	cases where deterministic behaviour is required for *IfExists - note this 
+	reduces performance.
+	
+2008-02-02  Dan Creswell <dan@dancres.org>
+
+	* Fix a false warning of schema conflicts in hierarchical matching situations.
+	
+	* Removed an errant System.err.println() in ExistsFactory
+	
+2007-12-31  Dan Creswell <dan@dancres.org>
+
+	* Released 2.0-rc2
+	
+2007-12-23  Dan Creswell <dan@dancres.org>
+
+	* Updated to Db 3.2.68
+	
+2007-11-14  Dan Creswell <dan@dancres.org>
+
+	* Fix incorrect notify clause in FifoSearchVisitorImpl which generates an
+	IllegalMonitorStateException
+	
+2007-11-04  Dan Creswell <dan@dancres.org>
+
+	* Revised ThreadStat to not include System threads in the count
+	
+	* Fixed a problem with *Exists not exiting at the point where
+	existing conflicts have been resolved.
+		
+2007-09-23  Dan Creswell <dan@dancres.org>
+
+	* Updated MonitorStats to accept a loop-time in seconds.  Zero dumps
+	stats once, otherwise every loop-time seconds.
+	
+2007-08-31  Dan Creswell <dan@dancres.org>
+
+	* Fix take accounting problem in bulk take leading to negative counts
+	
+2007-08-30  Dan Creswell <dan@dancres.org>
+
+	* Added tool to selectively reset lookup settings from a configuration
+	file
+	
+2007-08-12  Dan Creswell <dan@dancres.org>
+
+	* Released 2.0-rc1
+	
+2007-08-04  Dan Creswell <dan@dancres.org>
+
+	* Revised some default logger settings
+	
+	* Added a ThreadStat
+
+	* Added support for specifying Db cache size in kilo, mega or giga bytes.
+	(original patch provided by Roshan Sequeira modified by Dan)
+	
+2007-05-20  Dan Creswell <dan@dancres.org>
+
+	* Update to Db 3.2.23
+	
+	* Released 2.0beta
+	
+2007-05-08  Dan Creswell <dan@dancres.org>
+
+	* Fix a problem with CacheIndexer initialization in RootStorage
+	which could break null templates on contents() (as used by
+	Dashboard amongst other things).
+	
+2007-05-07  Dan Creswell <dan@dancres.org>
+
+	* Make transaction exception thrown when transactions are active
+	during snapshot more explicit
+	
+	* Add StatsDumper to regularly dump all active stats to 
+	console log
+	
+	* Add stats for internal queues
+	
+	* Removed several independent debug configuration variables that
+	have been superceeded by proper stats.
+	
+	* Released 2.0alpha4
+	
+2007-04-30  Dan Creswell <dan@dancres.org>
+
+	* Update documentation to cover loopback transaction manager
+	
+2007-04-23  Dan Creswell <dan@dancres.org>
+
+	* Transaction end is now signalled via the event queue
+	
+	* Fix bug where entry repository might be incorrectly initialized
+	during recovery
+	
+2007-04-22  Dan Creswell <dan@dancres.org>
+
+	* Database cache size should be a long
+	
+	* Revert most of backport-util-concurrent changes due to race
+	conditions
+	
+	* TxnState now uses synchronized not a heavyweight Mutex
+	
+	* Fix bug where transactions weren't finalized on prepareAndCommit
+	
+2007-03-13  Dan Creswell <dan@dancres.org>
+
+	* Added stat to track missed reads/takes
+	
+2007-03-09  Dan Creswell <dan@dancres.org>
+
+	* Released 2.0alpha3
+	
+2007-03-05  Dan Creswell <dan@dancres.org>
+
+	* Fixup dashboard scripts in installer to work with new backport
+	util-concurrent libraries
+	
+2007-02-28  Dan Creswell <dan@dancres.org>
+
+	* Fix a race condition in the lazy instantiation of EntryRepositories
+	
+	* Make BlockingOps stat work again after removing SearchTasks
+	infrastructure
+	
+	* Add a stat to track number of listeners on notify.EventQueue
+	
+	* Fix EventQueue leak in bulk take
+	
+2007-02-07  Dan Creswell <dan@dancres.org>
+
+	* Revised blocking operation implementations to use notify core
+
+	* Port to the backport util-concurrent to take advantage of JDK 5's
+	concurrency improvements whilst being backward compatible to JDK 1.4
+
+	* Added a prototype nio transport based on Apache Mina
+
+	* Removed old experimental transport
+
+	* Fixes for installer scripts where spaces are in the insane default
+	JDK install path on Windows.
+	
+	* Improved speed of MangledEntry serialization for faster transport and
+	storage
+	
+	* Released 2.0alpha2
+	
+2007-01-01  Dan Creswell <dan@dancres.org>
+
+	* Released 2.0alpha
+	
+2006-12-28  Dan Creswell <dan@dancres.org>
+
+	* Make blocking operation dispatch faster and less costly
+
+2006-12-27  Dan Creswell <dan@dancres.org>
+
+	* Implement ColocatedAgent support
+	
+	* Implement additional statistics
+	
+2006-12-12  Dan Creswell <dan@dancres.org>
+	
+	* Modify DumpRegistry to support more lookup location options
+	
+	* Update to JE 3.2.13
+
+2006-11-30  Dan Creswell <dan@dancres.org>
+
+	* Fix race conditions in cache indexing
+	
+	* Reduce cache indexer stack to one
+	
+2006-09-29  Dan Creswell <dan@dancres.org>
+
+	* Downgraded to 2.1.30 - temporary workaround for issue in 3.0.12
+	
+	* Released 1.29
+	
+2006-09-26  Dan Creswell <dan@dancres.org>
+
+	* Released 1.27
+	
+2006-09-19  Dan Creswell <dan@dancres.org>
+
+	* Fix a problem with active lease reaping not purging all relevant
+	entry's.
+	
+2006-08-18  Dan Creswell <dan@dancres.org>
+
+	* Remove old code for logging failed searches enabled
+	by logDebug
+	
+	* Rename logDebug to logCounts
+	
+	* Fix a problem where the WriteDaemon was deemed inactive too often
+	leading to excessive thread creation
+	
+	* Updated to Db/Java 3.0.12
+	
+2006-08-07  Dan Creswell <dan@dancres.org>
+
+	* Add support for logging details of failed searches
+	
+2006-07-14  Dan Creswell <dan@dancres.org>
+
+	* Add a -Dforce=true option to SyncAndShutdown to force shutdown of blitz
+	in face of active transactions.
+	
+	* Fix a problem where remote calls may be refused due to cleanup failure
+	in face of active transactions
+	
+	* Fix potential ConcurrentModificationException in TxnManagerState.abortAll
+	
+	* Released 1.26
+	
+2006-07-01  Dan Creswell <dan@dancres.org>
+
+	* Increase log levels on event sending code to assist in debugging issues
+	with notify.
+	
+2006-05-24  Dan Creswell <dan@dancres.org>
+
+	* Fix a problem in EntryViewImpl which could lead to duplicate Entry's
+	returned by contents
+	
+	* Released 1.25
+	
+2006-05-23  Dan Creswell <dan@dancres.org>
+
+	* Tweak logger output for WriteQueue stats
+	
+	* Add a headless option to the installer 
+	  (thanks to Robert Barnebey for testing duties)
+	
+	* Revised configuration defaults for installer to be in line with current
+	preferred settings
+	
+	* Make TimeBarrier mode checkpoint at flushes to improve database 
+	utilization and performance
+	
+2006-03-27  Dan Creswell <dan@dancres.org>
+
+    * Added logging to Annotating streams to allow better debugging of
+    codebase related issues.
+
+2006-03-03  Dan Creswell <dan@dancres.org>
+
+    * Fix phoenix configuration in installer to include jsk-dl.jar as part of
+    codebase
+
+    * Released 1.24
+    
+2006-02-22  Dan Creswell <dan@dancres.org>
+
+    * Fix ServiceLocator unicast lookup to correctly assert a security manager
+    otherwise code downloading is broken.
+
+    * Fix dashboard scripts to use Jini 2.1 jars only
+    
+    * Released 1.23
+
+2006-02-19  Dan Creswell <dan@dancres.org>
+
+    * Modify LockReleaseCallback to use WeakReference for SearchVisitors to
+    reduce memory footprint
+
+    * Released 1.22
+
+2006-02-15  Dan Creswell <dan@dancres.org>
+
+    * Upgrade to Db 2.1.30
+
+2006-02-14  Dan Creswell <dan@dancres.org>
+
+    * Fix EventGeneratorImpl/VisbilityImpl.ping() to not hold a lock across the
+    sequence number log which can cause deadlock if event queue bounding is
+    enabled.
+
+    * Released 1.22-pre1 (limited circulation)
+
+2006-02-10  Dan Creswell <dan@dancres.org>
+
+    * Fix up Rio config to use Jini 2.1 .jars
+
+2006-02-02  Dan Creswell <dan@dancres.org>
+
+    * Rewrite the contents() core.  It was just way too complex, had too much
+    retro-fitting and there have been some complaints of duplicates which will
+    be down to a hole in the overly complex locking scheme of the old version.
+
+2006-02-01  Dan Creswell <dan@dancres.org>
+
+    * Make sure we check for expired transactions in loopback mgr at time of
+    commit or abort.
+
+    * Released 1.21
+    
+2006-01-30  Dan Creswell <dan@dancres.org>
+
+    * Fix incorrect import in lease handlers configuration
+
+    * Released 1.21-pre4
+    
+2006-01-29  Dan Creswell <dan@dancres.org>
+
+    * Fix deadlock which can occur when an operation attempts to add state
+    to TxnState whilst it is concurrently being resolved.  These operations
+    should receive an exception indicating a user-programming error
+    but instead cause deadlock.
+
+    * Fix bug where we won't kill off associated notify's if we abort a
+    non-null transaction.
+
+2006-01-26  Dan Creswell <dan@dancres.org>
+
+    * Make sure we close RandomAccessFiles used in logging to prevent some
+    OS'en running out of file handles (some seem to cleanup on their own).
+
+    * Released 1.21-pre3 (limited circulation)
+
+2006-01-19  Dan Creswell <dan@dancres.org>
+
+    * Add support for a loopback transaction manager which can be enabled by
+    defining it's Exporter using the configuration variable loopbackTxnExporter.
+    Note the manager can only be used to co-ordinate transactions against the
+    blitz instance that it shares the JVM with. It cannot co-ordinate multiple
+    and/or remote participants such as other Blitz instances
+    [EXPERIMENTAL - USE AT YOUR PERIL]
+    
+2006-01-12  Dan Creswell <dan@dancres.org>
+
+    * Fix bug in BlitzServiceImpl.newView where for JavaSpace05 compatibility
+    we should only hold locks if the transaction is non-null.  Do the same
+    for LocalSpace.  Thanks to Simon Vicary for the bug report and unit test
+
+    * Released 1.21-pre2
+    
+2006-01-09  Dan Creswell <dan@dancres.org>
+
+    * Remove unnecessary BitIndex copy from BitmapIndexer - BitIndex's are
+    thread safe so we can iterate without copying.
+
+2006-01-07  Dan Creswell <dan@dancres.org>
+
+    * Revise transaction abort to spot situations where we needn't write an
+    entry to disk even though we have operations.  This optimization is
+    triggered when the associated transaction is active and thus no records
+    have been written to disk such that undo can be done entirely in memory.
+
+    * Fix an unlikely race condition where transaction operations could occur
+    after a decision had been taken to optimize and not emit a log record to
+    disk. These additional operations would invalidate the decision due to the
+    changes in state wrought on a transaction.
+     
+2006-01-05  Dan Creswell <dan@dancres.org>
+
+    * For write and write(Collection) have proxy populate stub and uuid fields
+    to save on network traffic and serialization costs.
+
+2006-01-04  Dan Creswell <dan@dancres.org>
+
+    * Remove offset from MangledField and use the loop index server-side
+    to derive it.
+
+2006-01-03  Dan Creswell <dan@dancres.org>
+
+    * Add support to experimental transport for transaction participant.
+
+    * Fixed a socket leak in the experimental transport
+
+2005-12-29  Dan Creswell <dan@dancres.org>
+
+    * Fix experimental transport to do readIfExists and takeIfExists correctly
+    rather than treat them like their normal brethren.
+
+2005-12-20  Dan Creswell <dan@dancres.org>
+
+    * Released 1.20
+    
+2005-12-09  Dan Creswell <dan@dancres.org>
+
+    * Make Blitz's internal view generation for contents methods strictly
+    apply the entry limit so as to cap memory usage.
+
+2005-12-08  Dan Creswell <dan@dancres.org>
+
+    * Fix up nio experimental transport to allow clients to exit (convert
+    Txer to use of Daemon threads).
+    
+2005-12-07  Dan Creswell <dan@dancres.org>
+
+    * Add updateContents configuration variable which can be used to disable
+    dynamic updating of contents views - useful for memory consumption control.
+    
+2005-12-03  Dan Creswell <dan@dancres.org>
+
+    * Fixed deadlock when checkpointing happens concurrently with creation
+    of a store by EntryReposFactory
+
+    * Released 1.19
+    
+2005-11-26  Dan Creswell <dan@dancres.org>
+
+    * Make LocalSpace support JavaSpace05 and leases and proper RemoteEvent
+    setup
+
+    * Updated documentation to make memory configuration information
+    more obvious.
+
+    * Released 1.18
+    
+2005-11-25  Dan Creswell <dan@dancres.org>
+
+    * More JINI 2.1 documentation tweaks
+
+    * Fix preferred-list problems causing conflicts
+
+    * Remove dependence on jini-ext.jar
+
+    * Update service-ui documentation for JINI 2.1
+
+    * Separate preferred list generation for blitz-dl.jar into separate target
+
+    * Released 1.17
+
+2005-11-21  Dan Creswell <dan@dancres.org>
+
+    * Optimize contents matching to stop doing hierarchy matching once one
+    of the template set has hit.
+
+2005-11-20  Dan Creswell <dan@dancres.org>
+
+    * Integrate experimental nio transport.
+
+2005-11-02  Dan Creswell <dan@dancres.org>
+
+    * Fix a problem where TxnLock failed to correctly handle a null callback
+
+    * Fix a problem where duplicate Entry's could be returned from an
+    EntryView in presence of concurrent writes (affects contents())
+
+    * Released 1.16
+    
+2005-11-01  Dan Creswell <dan@dancres.org>
+
+    * Fix StatsBoard::getStats() deadlock - thanks to Sirma Group for report
+    and suggested fix.
+
+    * Fix a bug in contents() where the view is dynamically updated with
+    inappropriate Entry's
+    
+    * Update Db/Java  to 2.0.90
+
+    * Released 1.15
+
+2005-10-27  Dan Creswell <dan@dancres.org>
+
+    * Make sure WriteEntryOpInfo only dirties at recovery if it's entry
+    wasn't on disk
+
+    * Fix a recovery issue where the pristine state of a write was inserted
+    into the cache rather than the up-to-date state found on disk
+
+    * Released 1.14
+
+2005-10-20  Dan Creswell <dan@dancres.org>
+
+    * Eliminate the additional roundtrip incurred downloading the first chunk of
+    EntryChits for use with JavaSpaceAdmin/JavaSpace05::contents
+
+    * Released 1.13
+
+2005-10-19  Dan Creswell <dan@dancres.org>
+
+    * Fix problem where we're not holding locks when doing
+    JavaSpace05::contents()
+
+2005-10-17  Dan Creswell <dan@dancres.org>
+
+    * Implement intelligent readahead based on use or not of snapshot method
+    
+2005-10-07  Dan Creswell <dan@dancres.org>
+
+    * Make sure Lifecycle.unregister is passed the correct reference
+
+    * Change debugging logging down to levels of FINE or lower
+
+    * Add multiplexing to nio test transport
+
+    * Released 1.13-pre9
+    
+2005-09-26  Dan Creswell <dan@dancres.org>
+
+	* Added some codebase caching into AnnotatingObjectOutputStream
+	because the RMIClassLoader infrastructure can sometimes trigger
+	opening of socket to codebase for each call to get a codebase for
+	a class.
+	
+2005-09-16  Dan Creswell <dan@dancres.org>
+
+	* Removed the aging support from ArcCache because it penalizes
+	concurrent take support.
+	
+2005-09-15  Dan Creswell <dan@dancres.org>
+
+	* Implemented nio-based test transport
+
+	* Fixed LeaseImpl to be public for nio test transport
+	
+2005-09-11  Dan Creswell <dan@dancres.org>
+
+	* Fixed installer to work with JINI 2.1
+
+	* Released 1.13-pre8
+	
+2005-09-10  Dan Creswell <dan@dancres.org>
+
+	* Revised iteration core to support leases and optional transaction
+	locking
+
+	* Revised EntryViewAdmin to support leasing and optional transaction
+	locking
+
+	* Merged tests for bulk ops, contents and visibility
+
+	* Created configs for JINI 2.1 and 2.0
+
+	* Add preferred-list to dljar target in build.xml
+	
+	* Released 1.13-pre7
+	
+2005-09-09  Dan Creswell <dan@dancres.org>
+
+	* Added bulk take and write to SpaceImpl
+
+	* Added visibility/availability to SpaceImpl
+
+	* Added remote interfaces for JavaSpace05 support
+	
+2005-09-06  Dan Creswell <dan@dancres.org>
+
+	* Fix race condition which could cause TxnPinger to abort a transaction
+	that was just committed.
+
+	* Internally Released 1.13-pre6
+	
+2005-09-02  Dan Creswell <dan@dancres.org>
+
+	* Make FindEntryOpInfo aggressively sync Entry deletion in cases where
+	the EntrySleeveImpl is on disk.  This ensures better performance in
+	cases where we have to hit disk often such as swapping, cold-start
+	or FIFO.
+
+	* Released 1.13-pre5
+
+	* Fix bug where transaction pinger might encounter
+	UnknownTransactionException for a transaction just committed and
+	then succeed with an abort thus erroneously undoing the transaction.
+	
+2005-08-30  Dan Creswell <dan@dancres.org>
+
+	* Refactor oid package to remove external dependency on UIDImpl.
+	Masking this makes it easier to introduce a new oid type as required for
+	fault tolerance.
+
+	* Internally Released 1.13-pre4
+	
+2005-08-24  Dan Creswell <dan@dancres.org>
+
+	* Added optional txn status checker which will detect transaction
+	manager death and abort associated transactions.  Configured with
+	variable txnPingInterval as an interval in ms.
+
+	* Display the codebase URL for a written Entry when dumping persistent
+	logs
+	
+2005-08-10  Dan Creswell <dan@dancres.org>
+
+	* Clean up some documentation re: JINI 2.1
+
+	* Update activation configuration
+
+	* Released 1.13-pre3
+	
+2005-08-05  Dan Creswell <dan@dancres.org>
+
+	* Revise persistent logger to use RandomAccessFile in sync mode which
+	is slightly faster than forced sync's via Channel.  Note that buffer
+	size for the logger becomes a significant tuning factor and should be
+	sized to hold all concurrent transaction state at each log write.
+	
+2005-07-22  Dan Creswell <dan@dancres.org>
+
+	* Added support for logging failed takes and reads for use with
+	log dump tool.
+
+	* Added versioning to Blitz log files
+
+	* Added support for upgrade from 1.12 or less
+
+	* Removed LoggableAction interface and support.  Converted all code to
+	use of TxnOp which reduces duplication, increases generic code and
+	prepares the way for fault tolerance (fault tolerance preparation).
+
+	* Associate lease renewals against Entry's under a write lock with
+	the transaction holding the lock rather than emitting them as
+	independent records (fault tolerance preparation).
+	
+2005-07-21  Dan Creswell <dan@dancres.org>
+
+	* Add support for emitting user data as part of a checkpoint snapshot
+
+	* Add support for logging instance count summaries to checkpoint
+	snapshots and into the log files for use by log dumping tool and
+	associated analyzers.
+
+	* Added a rudimentary command-line based monitoring tool which some
+	may prefer to dashboard
+	
+2005-07-19  Dan Creswell <dan@dancres.org>
+
+	* Added IOStat to provide statistics from the WriteDaemon.
+
+	* Fix bug where FIFOAllocator might not correctly initialize.
+
+	* Default write throttle to off.
+
+	* Added documentation for log dumping tool
+
+	* Released 1.12
+	
+2005-07-18  Dan Creswell <dan@dancres.org>
+
+	* Reduce span of Db Txns in SpaceImpl
+
+	* Released 1.11
+	
+2005-07-17  Dan Creswell <dan@dancres.org>
+
+	* Make DumpEntries correctly initialize Disk before attempting to 
+	scan.
+
+	* Fix a problem where CacheIndexers weren't always notified of Entry
+	deletions leading to poor in-cache performance.
+	
+2005-07-15  Dan Creswell <dan@dancres.org>
+
+	* Fix a deadlock around TxnLocks which occurs under high load when
+	task bounds have been hit
+	
+2005-07-14  Dan Creswell <dan@dancres.org>
+
+	* Revise documentation to include new tools.  Split out configuration
+	variables into sections and improved layout.
+
+	* Revised output format of log dumping tool to be more parser friendly.
+	
+2005-07-13  Dan Creswell <dan@dancres.org>
+
+	* Convert an errant System.out to a Logger.log
+
+	* Add support for manual triggering of lease reaping to complement
+	passive and automatic modes.  Enabled by setting the relevant reap
+	time to LeaseReaper.MANUAL_REAP
+
+	* Add a new tool, RequestReap to remotely trigger a manual lease reap.
+	
+2005-06-30  Dan Creswell <dan@dancres.org>
+
+	* Add more support for log dumping tool.  In particular support more
+	of the possible records types.
+
+	* Add a write queue throttle to prevent memory exhaustion and/or
+	overload.
+
+	* Add more configuration settings for managing Db.
+
+	* Improve recovery progress feedback.
+
+	* Make sure we explicitly buffer logs we read during recovery.
+	
+2005-06-27  Dan Creswell <dan@dancres.org>
+
+	* Released 1.10
+	
+2005-06-26  Dan Creswell <dan@dancres.org>
+
+	* Fix bug where transactions finalized in the commiting/aborting thread
+	caused deadlock owing to attempts to re-acquire mutex.
+
+2005-06-23  Dan Creswell <dan@dancres.org>
+
+	* Fix lock conflict caused by parallel database existence tests and
+	database creation (workaround for a Db issue).
+	
+2005-06-20  Dan Creswell <dan@dancres.org>
+
+	* Make non-wildcard searches terminate immediately we determine there
+	cannot be a match.
+
+	* Reduce de-serialization in searches
+
+	* Reduce de-serialization in handling of recent writes
+
+2005-06-15  Dan Creswell <dan@dancres.org>
+
+	* Add initial support for log dumping tool - good for debugging
+	both blitz and applications - see exactly what happened during a
+	run.
+	
+2005-06-03  Dan Creswell <dan@dancres.org>
+
+	* Fix database naming conflict caused by naming an Entry field meta
+
+	* Released 1.09
+	
+2005-05-30  Dan Creswell <dan@dancres.org>
+
+	* Change CacheIndexer default log level
+
+	* Added ignoreLogConfig configuration variable to cause Blitz to ignore
+	logger Level configuration entry's in it's configuration file.  This
+	allows a developer to use the standard logger configuration approach
+	when appropriate.
+	
+2005-04-04  Dan Creswell <dan@dancres.org>
+
+	* Fix WriteEntryOpInfo to markDirty committed entries if they are
+	not marked dirty when unpinned.  If they are pinned they can't have
+	been written to disk yet and thus they should still be dirty but
+	mightn't be if they got temporarily dropped into WriteScheduler due
+	to cache pressure
+
+	* Do a pre-check before executing some more costly logging statements
+
+	* Don't bother asking for an Entry unless we're going to be able to
+	actually initialize an indexer with it
+
+	* Tune Db/Java to handle swapping better
+
+	* Add a static serialVersionUID to DashboardUI::Factory to avoid
+	problems with differences in Inca X releases
+
+	* Optimize swapping in transient mode
+
+	* Released 1.08
+
+2005-03-31  Dan Creswell <dan@dancres.org>
+
+	* Fix a bug where transaction locks might be released prematurely
+	at commit/abort
+
+2005-03-21  Dan Creswell <dan@dancres.org>
+
+	* Lower layers of blitz.entry can end up with CacheIndexer's full of
+	DELETED Entry's which are wasted matches.  Fix CacheIndexers to ignore
+	such Entry's
+	
+2005-03-15  Dan Creswell <dan@dancres.org>
+
+	* Added support for per-Entry type constraints.  See
+	org.dancres.blitz.config.EntryConstraint
+
+	* Added CacheSize constraint to override the global cache setting
+	and set a cache size for a specific Entry type.  This replaces the
+	old mechanism for setting Entry specific cache size - update your
+	.config's accordingly
+
+	* Added Fifo constraint to enforce FIFO ordering in searches and
+	writes for a specific Entry type.
+
+	* Added support for Entry browsing to Dashboard - contributed
+	by Phil Bishop at Inca X
+
+	* Released 1.07
+	
+2005-03-08  Dan Creswell <dan@dancres.org>
+
+	* Make StartDashboard's timeout configurable via system property.
+	To override the default timeout, specify -DmaxDiscover=<ms>
+
+	* Released 1.06
+	
+2005-03-04  Dan Creswell <dan@dancres.org>
+
+	* Added disableBitmaps boolean config variable to disable bitmap
+	indexing if it proves un-performant or broken.
+	
+2005-03-03  Dan Creswell <dan@dancres.org>
+
+	* Added support for JavaSpaceAdmin interface as implemented by
+	Outrigger.  This will allow appropriate space browsers to interrogate
+	and modify the contents of a Blitz instance.
+
+	* Fix a bug where renew/cancel didn't manage stats correctly
+	
+2005-03-01  Dan Creswell <dan@dancres.org>
+
+	* Moved reset of stats from SleeveCache::close to
+	SleeveCache::deleteAll.
+
+	* Added support for caching indexing using Bitmaps.  Applicable in
+	situations where caches are of fixed size they are much quicker
+	than the equivalent HashMapIndexer whilst having similar memory
+	consumption in most cases.
+	
+2005-02-19  Dan Creswell <dan@dancres.org>
+
+	* Added support for remote triggering of Entry cleanup.
+
+	* SpaceImpl::find should abort a null transaction in face of exceptions
+	not prepAndCommit
+
+	* Upgraded to Db 1.7.1
+	
+2005-02-08  Dan Creswell <dan@dancres.org>
+
+	* Fixed a nasty race condition in LockCache where an old reference
+	can cause invalidation of a current lock.
+
+	* Merge support from FT for individual Entry cache sizes.
+
+	* Released 1.05
+	
+2005-01-13  Dan Creswell <dan@dancres.org>
+
+	* Fix a deadlock which can occur in writing Entry's with small cachesize
+
+	* Speculative deadlock fix which might occur in updating Entry's with
+	small cachesize
+
+	* Split retry/deadlock avoidance code into a framework (RetryingUpdate
+	and RetryableOperation)
+
+	* Use deadlock avoidance framework in various parts of EntryStorage
+
+	* Relax isolation levels on disk-based tuple scans.  Reduces lock
+	conflicts, lock demands and increases concurrency.  Also yields a
+	performance improvement even in cache-restricted cases.
+
+	* Big thanks to Dylan Wilson for all his testing and reporting effort
+	that fuelled the above changes and has resulted in a better product.
+
+	* Fixed the release scripts to uniquely name the installer to
+	fix SourceForge name conflicts.
+
+	* Released 1.04
+	
+2005-01-10  Dan Creswell <dan@dancres.org>
+
+	* Fix a deadlock which can occur during deletion of large Entry's.
+	(Thanks to Dylan Wilson for a great bug report).
+
+2004-12-31  Dan Creswell <dan@dancres.org>
+
+	* Fix a minor problem where an abort can dump a non-fatal
+	UnknownTransactionException during recovery.  Recovery will still
+	complete and no damage has been done.
+
+2004-12-29  Dan Creswell <dan@dancres.org>
+
+	* Fixed a bug in meta.Registry where initializer results were not
+	forcible commited to disk.
+
+	* Released 1.03
+	
+2004-12-20  Dan Creswell <dan@dancres.org>
+
+	* Make Blitz obey the contents of initialGroups
+
+	* Released 1.02
+	
+2004-12-14  Dan Creswell <dan@dancres.org>
+
+	* Make new version attributes override those in LookupStorage
+
+	* Released 1.00
+
+	* Fix a deadlock between checkpointer and processing of newly
+	arrived Entry's being passed to blocked search tasks
+	(thanks to Joseph Wang for another quality bug report)	
+	
+	* Released 1.01
+	
+2004-12-01  Dan Creswell <dan@dancres.org>
+
+	* Upgraded to Db/Java 1.7.0
+
+	* Released 0.99
+
+	* Merged FieldsStat from -idev
+
+	* Merged Entry structure stuff from -idev dashboard
+	
+2004-11-15  Dan Creswell <dan@dancres.org>
+
+	* Released 0.98
+	
+2004-11-14  Dan Creswell <dan@dancres.org>
+
+	* Reduced -dl.jar footprint
+
+	* Merged new rio config containing serviceui support (contributed by
+	Jerome Bernard)
+	
+2004-11-05  Dan Creswell <dan@dancres.org>
+
+	* Fixed dashboard to not tweak the look and feel when run as ServiceUI
+	
+2004-11-04  Dan Creswell <dan@dancres.org>
+
+	* Added a setContent(null) into ArcCache when swapping a CBD to
+	b1 or b2 - reduces memory footprint
+	
+2004-10-26  Dan Creswell <dan@dancres.org>
+
+	* FindEntryOpInfo should not unpin an Entry - that should only be done
+	by WriteEntryOpInfo.  This could lead to inaccurate notify behaviour
+	under very rare circumstances
+	
+2004-09-30  Dan Creswell <dan@dancres.org>
+
+	* Fix bug where prepared state may not be restored correctly
+	during recovery
+
+	* Release 0.97
+	
+2004-09-23  Dan Creswell <dan@dancres.org>
+
+	* Fix a deadlock induced by checkpointing whilst an EntryRepository
+	is being demand loaded (thanks to Joseph Wang for a great bug report)
+
+	* Released 0.96
+	
+2004-09-21  Dan Creswell <dan@dancres.org>
+
+	* Fix a potential lock conflict when searches are happening whilst
+	WriteDaemon performs a delete
+	
+2004-09-16  Dan Creswell <dan@dancres.org>
+
+	* Fix a CacheIndexer initialization bug which can break all cache
+	matching and associated reads/takes.  Typical symptom was an
+	ArrayIndexOutOfBoundsException which could be easily confused with
+	a false positive caused by Entry schema changes.
+	
+2004-09-09  Dan Creswell <dan@dancres.org>
+
+	* Fix silly incorrect optimization that breaks matching.
+
+	* Released 0.94
+	
+2004-08-22  Dan Creswell <dan@dancres.org>
+
+	* Added HostStat
+
+	* Added new examples for EntrySizer and a simple HelloWorld
+
+	* Added template configurations for handling large objects
+
+	* Released 0.93
+	
+2004-08-21  Dan Creswell <dan@dancres.org>
+
+	* Tweaked SleeveCache to not bother searching if no entry's are
+	present rather than hit cache and then EntryStorage
+
+	* Added diagnostic output to CacheIndexer
+
+	* Added ServiceUI to the list of required packages for compilation
+
+	* Added a snapshot test (from the JSIP package - thanks to Phil and
+	Nige)
+	
+2004-08-06  Dan Creswell <dan@dancres.org>
+
+	* SpaceImpl::write was holding txn open way longer than it needs to.
+	
+2004-08-05  Dan Creswell <dan@dancres.org>
+
+	* Added throttling support on event and task queues to prevent
+	high-load from causing runaway heap consumption problems.  Configured
+	via eventQueueBound and taskQueueBound respectively
+
+	* Added support for multiple event processor threads in EventQueue
+	to allow for balancing between event generation (typically from writes)
+	and matching/dispatching as remote events.  Configured via
+	maxEventProcessors
+	
+2004-08-03  Dan Creswell <dan@dancres.org>
+
+	* Make sure we close ObjectStreams used during (un)mangling.
+	This is for tidyness/robustness - doesn't seem to cause a memory leak.
+	
+2004-08-02  Dan Creswell <dan@dancres.org>
+
+	* Remove need for initialAttrs to be specified.
+
+	* Released 0.92
+	
+2004-07-31  Dan Creswell <dan@dancres.org>
+
+	* Added EntrySizer utility to class to assist in storage/memory
+	usage estimation.
+	
+2004-07-29  Dan Creswell <dan@dancres.org>
+
+	* Fix build/release to include currently linked je.jar
+
+	* Released 0.91
+	
+2004-07-26  Dan Creswell <dan@dancres.org>
+
+	* Merged ServiceUI support for dashboard
+
+	* Released 0.90
+	
+2004-07-16  Dan Creswell <dan@dancres.org>
+	
+	* Revised LockMgr to use a reference queue against a standard
+	HashMap rather than SoftHashMap which is less efficient.
+
+	* Merged a patch from Sleepycat to fix an errant
+	LogFileNotFoundException
+	
+2004-07-15  Dan Creswell <dan@dancres.org>
+
+	* Turn off lock timeouts which seem to be breaking things
+	under load
+	
+2004-07-12  Dan Creswell <dan@dancres.org>
+
+	* Make sure we sync on closing a log file
+	
+	* Released 0.89a
+
+2004-07-09  Dan Creswell <dan@dancres.org>
+
+	* Don't use DelegatingBufferStream2 until it handles oversized
+	writes correctly
+	
+2004-07-05  Dan Creswell <dan@dancres.org>
+
+	* Fixed up some disk initialization order issues when transient
+	personality is active.
+	
+2004-06-28  Dan Creswell <dan@dancres.org>
+
+	* Fixed a build problem (really include je 1.5.0)
+
+	* Released 0.89
+	
+	* Added StartFromConfig to the dash package to permit use of
+	dashboard in secure configurations etc.
+	
+2004-06-27  Dan Creswell <dan@dancres.org>
+
+	* Fixed a locking problem in the txn lock manager
+
+	* Modified prevayler to use nio a little more
+
+	* Released 0.88
+	
+2004-06-23  Dan Creswell <dan@dancres.org>
+
+	* Make SearchVisitorImpl cleanup it's txn listener
+
+	* Released 0.87
+	
+2004-06-22  Dan Creswell <dan@dancres.org>
+
+	* Fixed several try/catch and lock blocks in TxnState
+
+	* Make sure transaction status is reflected correctly to currently
+	blocked reads/takes
+
+	* Abort blocked reads/takes waiting on a resolved transaction with
+	a TransactionException
+	
+	* Added a tool to remotely trigger hot backup
+
+	* Released 0.86
+	
+2004-06-21  Dan Creswell <dan@dancres.org>
+
+	* Added experimental hot backup support accessible via BlitzAdmin
+
+	* Fixed bug in Disk.dbExists which prevented recovery from backup
+
+	* Fixed a checkpointing problem where not all state might have made
+	it to disk
+	
+	* Modified LookupStorage/Data to hold Entry attributes in a
+	MarshalledObject
+
+	* Upgrade to Db/Java 1.5.0
+	
+2004-06-18  Dan Creswell <dan@dancres.org>
+
+	* Revised checkpointing to block logging for less time.
+	
+2004-06-15  Dan Creswell <dan@dancres.org>
+
+	* Make Blitz lock it's storage location to prevent running two
+	instances against the same storage risking corruption.
+
+2004-06-14  Dan Creswell <dan@dancres.org>
+
+	* Added support for an identity transaction which allows for
+	transaction like operations but with no logging.
+	
+2004-06-11  Dan Creswell <dan@dancres.org>
+
+	* Fixed a bug where we might join() before fully init'd
+	
+2004-06-10  Dan Creswell <dan@dancres.org>
+
+	* Made it possible to have several LeaseReaper's active, each with
+	their own set of Reapables and with their own sets of filters.
+	
+2004-06-04  Dan Creswell <dan@dancres.org>
+
+	* Fixed a problem with batch lease renewals
+		
+	* Fixed a broken interface which is all public but had a package
+	private return value.  Think the compiler should've caught it.  Thanks
+	to Karl Koster for helping with testing.
+		
+	* Released V0.85
+		
+2004-06-01  Dan Creswell <dan@dancres.org>
+
+	* Updated Db/Java to 1.4.10
+
+	* Fix indexes to configure databases for duplicate support (if we don't
+	we loose entry's - gulp!)
+	
+	* Released V0.83
+
+	* Fixed a bug in the lease tracker which wasn't permitting creation
+	of the database from scratch.
+
+	* Released V0.84
+	
+2004-05-25  Dan Creswell <dan@dancres.org>
+
+        * Changed CacheLines to use IntHashMap for hashcode to Entry UID
+        matching
+
+        * Revised CacheLine to use a Set rather than a Map for Ids
+
+        * TxnLock now lazily creates the conflicts list
+
+        * Added a new experimental concurrent batcher and marked the old
+        version stable
+
+2004-05-19  Dan Creswell <dan@dancres.org>
+
+	* Make sure we close the server socket on debugger exit
+	
+	* Fix LeaseImpl::canBatch to discriminate on the space instance
+	responsible
+
+	* Fix LeaseMapImpl::canContainKey to discriminate on the space instance
+	responsible
+
+	* Updated ServiceLocator to allow for timeouts
+
+	* Updated tools to use ServiceLocator timeouts
+
+	* Released V0.82
+	
+2004-05-17  Dan Creswell <dan@dancres.org>
+
+	* Fixed hierarchical matching bug triggered by having no enclosing
+	active transaction.
+
+	* Released V0.81
+	
+2004-05-16  Dan Creswell <dan@dancres.org>
+
+	* Initial fork/port to Db Java
+
+	* Initial documentation revision
+	
+	* Released V0.8
+	
+2004-05-02  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.5
+	
+	* Modified SyncAndShutdown to accept spacename or lus host and
+	spacename as parameters
+	
+2004-04-30  Dan Creswell <dan@dancres.org>
+
+	* Merged Ussama Baggili's changes to allow dashboard to discover a
+	blitz instance via unicast or multicast discovery.
+	
+2004-04-29  Dan Creswell <dan@dancres.org>
+	
+	* TxnLock stuff moved to txnlock package
+	
+	* Fixed some txnlock state visibility issues 
+
+	* Removed unnecessary dirtying of cache block descriptors in
+	WriteEntryOpInfo
+
+	* Modified CacheListener and ArcCache to make dirtying information
+	available to allow CacheIndexer to better manage search candidates.
+
+	* Cleared out the old deletion hinting from TupleLocator impls.
+	
+	* Added BlockingOpsStat to track current number of blocking reads
+	and takes
+
+	* Updated dashboard to display additional blocking stats
+	
+2004-04-28  Dan Creswell <dan@dancres.org>
+
+	* Fixed a NullPointerException problem in Disk.deleteFiles
+
+	* Added caches for parents and fields to EntryMangler to accelerate
+	mangling and unmangling
+	
+2004-04-27  Dan Creswell <dan@dancres.org>
+
+	* Added some caching of marshalled txn mgrs to remove repeated
+	conversion into MarshalledObjects.
+	
+2004-04-26  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.4
+	
+2004-04-22  Dan Creswell <dan@dancres.org>
+
+	* Fixed race condition where client's could be performing transactional
+	operations before join was complete.
+	
+2004-04-13  Dan Creswell <dan@dancres.org>
+
+	* Added an experimental solution to keep stats up-to-date in the face
+	of lease expiry - still not 100% timely
+	
+2004-04-08  Dan Creswell <dan@dancres.org>
+
+	* Tweaked the hash-code algorithm for UIDImpl to reduce collisions
+	
+2004-04-06  Dan Creswell <dan@dancres.org>
+
+	* Modified DumpEntries to compute how many entries were ignored due
+	to their lease being expired
+	
+2004-04-04  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.3
+	
+	* Fix stupid bug in Null txn initializer
+	
+2004-04-02  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.2
+	
+	* Revised documentation to cover dashboard, SyncAndShutdown
+	and DumpEntries
+
+	* Merged dashboard source code from Inca X
+
+2004-04-01  Dan Creswell <dan@dancres.org>
+
+	* Added SyncAndShutdown and DumpEntries tools
+	
+2004-03-30  Dan Creswell <dan@dancres.org>
+
+	* Blitz shouldn't bother saving local transaction manager in log
+	records
+
+	* Added logger output to announce active storage personality
+
+	* Modified cache usage to allow for aging of entry's that are about
+	to be taken
+	
+2004-03-29  Dan Creswell <dan@dancres.org>
+
+	* Fixed lease expiry initialization bug in write() and notify()
+	
+2004-03-26  Dan Creswell <dan@dancres.org>
+
+	* Fixed a bug in the CacheLine hint handling code where it assumed
+	that the UID to be demoted would always be in the cache at the
+	time
+	
+	* Revised admin documentation to cover shutdown/destroy configuration
+		
+2004-03-24  Dan Creswell <dan@dancres.org>
+
+	* Added configuration variable (compliantDestroy) to enable/disable
+	erasing of state when destroy is invoked (after discussion with
+	John McClain)
+
+	* Added a shutdown method which can be used to stop Blitz without
+	erasing state regardless of the compliantDestroy variable's state
+	
+2004-03-23  Dan Creswell <dan@dancres.org>
+
+	* Fixed Blitz to load join management aspects from config file if
+	the user defines it
+
+	* Added rule (jars) to build.xml for compiling and building just
+	the .jars with no generation of javadoc etc
+	
+2004-03-21  Dan Creswell <dan@dancres.org>
+
+	* Improved performance of snapshot
+
+	* Fixed several performance "dark-corners" in CacheIndexer
+	
+2004-03-15  Dan Creswell <dan@dancres.org>
+
+	* Fixed a bug where non-critical WriteDaemon threads were not being
+	shutdown cleanly causing Blitz to sometimes fail to exit immediately
+	
+2004-03-14  Dan Creswell <dan@dancres.org>
+
+	* Cleaned up stats handling in entry package.  Moved stats updates
+	into OpInfo instances.  Split accounting/stats generation into
+	CounterImpl
+
+	* Added stat to track Entry count plus associated switch
+
+	* Expanded stats client example
+
+	* Added additional helper methods to TypesStat and OpStat
+
+	* Documentation updated to reflect new stats
+	
+2004-03-13  Dan Creswell <dan@dancres.org>
+
+	* Modified ConfigAssistant to print a general note about configuring
+	persistent directories in addition to the OS-specific instructions.
+	(Suggested by Ussama Baggili)
+	
+	* Added a stat which provides information about the current number
+	of active transactions Blitz is handling
+
+	* Reworked stats package separating out the stats generation/creation
+	role from the stats presentation role
+
+2004-03-11  Dan Creswell <dan@dancres.org>
+	
+	* Fixed a bug in Blitz's prepareAndCommit implementation where
+	the wrong state could be returned
+
+	* Fixed a bug where TransientPersonality might delete currently active
+	files leaving to bad shutdown
+	
+2004-03-03  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.1
+	
+	* Fixed bug in OID Allocation which could cause recovery problems
+	should initial setup fail before completion
+
+	* Fixed bug where EventQueue could be interrupted whilst updating
+	event generator sequence numbers as part of restart
+
+	* Cleaned up Registry API by splitting methods into RegistryAccessor
+
+	* Fixed bug where not all cached entries were being considered for
+	wildcard match
+
+	* Added pdf file explaining how to use Blitz in embedded mode
+	
+2004-02-24  Dan Creswell <dan@dancres.org>
+
+	* Added BlitzAdmin interface
+
+	* Added ability to trigger checkpoint remotely via BlitzAdmin
+	
+2004-02-19  Dan Creswell <dan@dancres.org>
+
+	* Fixed Blitz to invoke ActivationGroup::inactive() during destroy()
+	to ensure garbage collection is performed and classloaders are
+	dumped
+	
+2004-02-04  Dan Creswell <dan@dancres.org>
+
+	* Released V2.0.0
+	
+	* Added support for Db 4.2
+
+	* Added ConfigGuide, a tool to assist in initial setup/installation
+	of Blitz
+
+	* Renamed ConfigGuide to ConfigAssistant
+
+	* Updated tuning guide, install notes etc
+	
+2004-02-03  Dan Creswell <dan@dancres.org>
+
+	* Introduced BootContext which allows components to be aware of various
+	bits of boot-time information for purposes of recovery etc
+
+	* Implemented a BootInfo instance, UnsyncdOps, which is added to
+	BootContext to advise components of the maximum number of log ops
+	that may have accrued since the last sync/checkpoint
+
+	* Modified AllocatorImpl to use UnsyncdOps for resync'ing of oid
+	allocators.  Removes the need for user code to be involved in the
+	allocator recovery process
+
+	* Added rules to allow building/release of binaries for Db4.1 and
+	Db4.2
+	
+2004-02-02  Dan Creswell <dan@dancres.org>
+
+	* Implemented BufferingPrevaylerImpl
+
+	* Implemented TimeBarrierPersistent and TimeBarrierPersonality which
+	allows trading of persistence QoS against speed
+
+	* Implemented automatic log cleanup.  Experimental for now so it can
+	be configured off through the appropriate StorageModel's
+	
+2004-01-28  Dan Creswell <dan@dancres.org>
+
+	* Separated the checkpointing code out of TxnManager and made it
+	abstract to allow easier changes in policy
+
+	* Added support for storage personality's/models
+
+	* Moved the persistence initialization out of TxnManager and into
+	Persistent storage model
+
+	* Implemented NullPrevayler to allow for log-less operation
+
+	* Implemented NeverTrigger to allow for checkpoint-less operation
+
+	* Create Transient storage model which makes Blitz act like a
+	disk-backed cache
+	
+2004-01-24  Dan Creswell <dan@dancres.org>
+
+	* Added DebugILFactory which allows a programmer to insert a custom
+	invocation layer into Blitz's endpoint stack
+
+	* Added TimingInvocationHandler which logs the duration of a remote
+	call to console and can be configured into the remote stack via
+	DebugILFactory
+	
+2004-01-22  Dan Creswell <dan@dancres.org>
+
+	* Added experimental support for concurrent log write batching where
+	one batch can be written to disk whilst another is forming
+
+	* Added support for a log buffer.  Allows for all writes in a batch
+	to be rendered into a buffer and block written to disk for better
+	throughput
+	
+2004-01-20  Dan Creswell <dan@dancres.org>
+
+	* Released V1.1.4
+	
+	* Fixed an incorrect configuration variable reference: dbCache
+
+	* Added config option to allow setting of max simultaneous Db txn's
+
+	* Fixed TxnManagerState to correctly save/load it's clock state -
+	required during recovery 
+
+	* Fixed a checkpoint bug which sometimes resulted in a lost entry.
+	SyncFinalizer now invokes txn_checkpoint with Db.DB_FORCE
+	
+2004-01-20  Dan Creswell <dan@dancres.org>
+
+	* Added integrity checking
+
+	* Added logging for LoginContext.login() failures
+	
+2004-01-15  Dan Creswell <dan@dancres.org>
+
+	* Tweaked code to compile under JDK 1.5 - includes some code in
+	Debugger to perform programmatical stack dumps
+
+2004-01-13  Dan Creswell <dan@dancres.org>
+
+	* Released V1.1.3
+	
+	* Updated some Javadoc
+
+	* Updated documentation
+
+	* Changed org.dancres.blitz.Logging to force use of a predefined
+	ConsoleHandler which fixes a problem with losing logging messages with
+	a level less than INFO
+	
+2004-01-12  Dan Creswell <dan@dancres.org>
+
+	* Moved PINNED EntrySleeve handling into WriteScheduler
+
+	* MEMORY_ONLY became PINNED
+	
+	* Fixed deadlock in WriteBuffer (TxnStress strikes again) -
+	don't hold locks across I/O!
+	
+	* Rewrote WriteBuffer to better consolidate writes and reduce load
+	on WriteDaemon
+
+2004-01-11  Dan Creswell <dan@dancres.org>
+
+	* Fixed WriteDaemon to correctly handle a desiredPendingWrites value
+	of 0
+
+	* Added a MemoryStat to track maximum available and current memory
+	usage
+	
+2004-01-08  Dan Creswell <dan@dancres.org>
+
+	* Fixed a deadlock by making EntryStorage::load use non-blocking
+	disk transactions
+
+	* Added non-blocking disk transactions
+
+	* Modified LocalSpace to support full transactional operations.
+	Provides embedded space capability
+
+	* Added Debugger tool. See org.dancres.blitz.Debugger
+
+	* Created TxnStress to thrash Blitz.  It worked, found a deadlock! :(
+
+2004-01-05  Dan Creswell <dan@dancres.org>
+	
+	* Released V1.1.2
+	
+	* Fixed a deadlock.  Rarely happens as it requires a particular step
+	in checkpoint to happen at exactly the same time as a del of an
+	EntrySleeve from an index.  Both the checkpoint and the del must
+	hit the same page at pretty much the same time and in one particular
+	order
+	
+2004-01-04  Dan Creswell <dan@dancres.org>
+
+	* Revised lease handling code.  Fixed a bug in the lease bounding
+	for entries where we weren't searching for the correct config value.
+	Much cleaner now
+
+	* Released V1.1.1
+	
+	* Replaced use of ":" in .config files with
+	System.property("path.separator") to be more cross-platform.  Thanks
+	to Olaf Bergner for this suggestion
+	
+2004-01-02  Dan Creswell <dan@dancres.org>
+
+	* Added a tuning guide
+
+	* Various documentation tweaks
+	
+2003-12-17  Dan Creswell <dan@dancres.org>
+
+	* Released V1.1.0
+
+	* Recovery of oid allocation simplified
+
+	* Notify registration recovery rewritten to allow full recovery from
+	log files alone
+	
+2003-12-16  Dan Creswell <dan@dancres.org>
+
+	* Released v1.0.2
+
+	* Support for dumping of useful disk performance statistics
+
+	* Removed excessive log flushing
+
+2003-12-15  Dan Creswell <dan@dancres.org>
+
+	* Released v1.0.1
+	
+	* Fixed bug in checkpointing where checkpoint record was written before
+	all buffers were flushed
+
+2003-12-12  Dan Creswell <dan@dancres.org>
+
+	* Released v1.0 - initial code drop
+