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Move to JDK 1.5 as a minimum.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:12:32 +0100
parents 3dc0c5604566
children a77f0a9ed93c
line wrap: on
line source

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