Release Notes

Added by Taylor Gautier, last edited by Fiona OShea on Mar 25, 2009  (view change)
THIS IS ARCHIVE DOCUMENTATION FOR TERRACOTTA v. 2.7.

For the current release, see the current DSO documentation ยป

Release: 2.7.3
Publish Date: February, 2009

Changes in 2.7.3

Bug Fixes

View Jira

Improvements Include

Changes in 2.7.2

Bug Fixes

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Improvements Include
  • CDV-901 Add DGC details to DGC screen
  • CDV-1040 Log successful client connect message to stdout
  • FORGE-275 Add meta-annotations to TIM annotations
  • FORGE-295 Support for EHCache 1.4.1

Changes in 2.7.1

Bug Fixes

View Jira

New Features
  • CDV-503 Additional logging - Detailed output when waiting for clients to connect.
  • CDV-976 Ability to choose temp location for Statistics Visualization Tool.

Changes in 2.7.0

Bug Fixes

View Jira

New Features
  • Certified Patch Process
    Terracotta 2.7 introduces the ability to accept certified hot patches for systems running in production.
  • CDV-823
    tc.properties settings can be configured in tc-config.xml.
  • CDV-781
    Removed the need for manual intervention when restarting passive Terracotta Server.
  • CDV-455, CDV-802
    Terracotta Integration Module supporting sessions for Glassfish
  • CDV-772
    Spring 2.0.8 and 2.5.4 support
  • CDV-769
    Script to download and install TIMs from the Terracotta Forge
Additional Improvements
  • Improved DGC performance and debuggability
  • Online backup support
  • Clusterwide runtime statistics added to Admin Console
  • Visibility into resident objects in Admin Console
  • Visibility into Client Memory Bloat in Admin Console
  • Find feature added to thread dump output screen in Admin Console
  • Log Heap stats every 15 minutes by default
  • Improved error messaging

Terracotta Server Array Known Issues

  • CDV-1103 Issues with Terracotta nature when sharing projects in Eclipse
    • Workaround: Remove and then re-add the Terracotta Nature to work around the problem
  • CDV-928 Shell scripts do not function correctly on ubuntu.
    • Workaround: Point /bin/sh to /bin/bash or Update the script to be /bin/bash instead of /bin/sh
  • CDV-877 SIGAR fails to load if path and JAVA_HOME do not match.
    • Workaround: Ensure that they match.
  • CDV-920 Rife demo in the kit expects to find clustered-rife-1.6.0. This is no longer available in kit
    • Workaround: Update ~/samples/rife/continuations/]tc-config.xml to replace "clustered-rife-1.6.0" with "tim-rife-1.1.0"
  • CDV-912 On Mac OS there may be issues where the Terracotta Sample Server remains running after the machine goes into a dormant state or if the window is closed using <cmd>Q or the menu bar.
    • Workaround: Use the file menu or the close box to exist the Sample Launcher.
  • CDV-749 Long file names are truncated when tar used on Solaris.
    • Workaround: On Solaris the gtar command should be used.
  • CDV-538 Redeployed web applications will almost certainly run into ClassCastExceptions for shared application-level objects.
  • CDV-637 In configurator java.lang.UnsupportedClassVersionError is thrown when using BEA WebLogic 8.1.
    • Workaround: Use a later version of BEA Weblogic.
  • CDV-255 Default java security policy under Websphere AS doesn't work correctly with Terracotta.
    • Workaround: Change the policy file, commenting out all of the defaults and adding just this: 
      grant {
     permission java.security.AllPermission;
   };
  • CDV-254 Class sharing under IBM VM issues with DSO.
    • Workaround: Disable class sharing (-Xshareclasses:none).
  • This release supports the use of the THashMap and THashSet classes from the trove library http://trove4j.sourceforge.net. Version 1.1b5 is officially supported in this release. THashMap and THashSet support the use of user-customized hashing strategies through the TObjectHashingStrategy interface. When distributing THashMap/THashSet instances, only the default hashing strategy is supported. Any custom hash strategy will not be honored across the cluster.
  • IBM WebSphere CE does not support multiple domains in a manner that is compatible with Configurator. However, you can use Configurator to test a web application deployed on Apache Tomcat. After configuring your web application to run clustered with Terracotta Sessions, use the generated tc-config.xml file to deploy the web application on IBM WebSphere CE running with Terracotta Sessions.
  • OOME in Permspace 
    SEVERE: Error deploying web application directory search
org.apache.commons.logging.LogConfigurationException:
java.lang.OutOfMemoryError: PermGen space (Caused by java.lang.OutOfMemoryError: PermGen space) at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:538) at ...

    Increase the permspace by passing the correct jvm arguments.

  • Max server object count capped by int
    There could be some unexpected behavior if the database has more than max int/2 objects in it.
  • Possible double notifies after server restart
    It is possible to receive double notifies on server restart
    • This is caused by
      • Thread1 is selected to be the notified thread in the server and the
        notification succeeds
      • The server crashes
      • When the server comes back up and the outstanding transactions are re-sent, the server chooses a different thread to be the notified thread and THAT notify also succeeds.
    • The solution is
      • On the receiving client side, keep track of the server transaction id that caused the notify.
      • On client reconnect, the client lock state should contain the notifier
        server transaction id
      • The server lock manager can then decide whether or not to choose a notified
        thread for a given transaction based on whether that transaction's notified
        thread has already been applied
  • Changes to the default batch size made to improve memory performance may in some cases affect a class of performance tests. Please contact support@terracottatech.com if this occurs.

Terracotta Forge Known Issues

  • FORGE-260 Cannot fault CGLIB instances.
    • Workaround: tim-cglib should only be used with hibernate.
  • FORGE-270 Setting timeToIdleSeconds wth timeToLiveSeconds in ehcache.xml causes excess TPS.
    • Workaround: Do not use these settings in conjunction with one another.
  • FORGE-214 Maven-surefire-plugin issue on windows. Issue filed against the surefire plugin SUREFIRE-461.
    • Workaround: The workaround is to instruct Maven to skip the test phase of the build when installing the TIM. This is done by passing the following on the command-line: -Dmaven.test.skip=true

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