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We experienced a problem while using the sequence connection pool. After some debugging, it turned out that there seems to be a problem with the initialization of the maxPoolSize if no value is explicitly specified. The code (org.eclipse.persistence.internal.sequencing.SequencingManager, createConnectionHandler()) currently is: if (getMaxPoolSize() == -1) { setMinPoolSize(2); } I've attached a small patch (two letters :)) which should fix it. The problem which we observed was, that after a disconnection of the DB the sequence pool couldn't recover. In the ConnectionPool class, acquireConnection() there is a check like this: if ((this.connectionsUsed.size() + this.connectionsAvailable.size()) < this.maxNumberOfConnections) { which can't go true with a -1 for maxNumberOfConnections We worked around the problem by setting the eclipselink.jdbc.sequence-connection-pool.max property explicitly.
Created attachment 208166 [details] Patch to fix default initialization
Let us know if you need help with verifying the patch.
Hi Tom, I think I will need some help. I am trying for some time now to build and test EclipseLink locally. I am following the description http://wiki.eclipse.org/EclipseLink/Building but it seems to be somewhat outdated. I managed to get the maven/tycho build, but from what I understand, in order to run the tests I have to first build the Eclipselink jar, and then run the tests (using the ant build). I tried following the description and specify external folder with libraries like bnd and junit, however, I still get this (after a succesfull maven buld): I call 'ant -f antbuild.xml build-eclipselink-jar' and get: bnd-package: [taskdef] Could not load definitions from resource aQute/bnd/ant/taskdef.properties. It could not be found. I define the following properties in my <user-home>/build.properties: extensions.depend.dir=C:/develop/EclipseLink/extension.lib.external/extension.lib.external bndtool.lib=bnd-0.0.401.jar junit.lib=C:/develop/EclipseLink/extension.lib.external/extension.lib.external/junit-4.10.jar This was for example one of the outdated infos on the build page, there the property is still named bndtool.jar. I also tried giving the full path to it, however without success. Is there some newer description? Or an example? May be can see an example in some of the files used to build at Eclipse, but I couldn't find it on my onw so far.
I managed to get the build working properly. Now I can start the different test groups. I will share the results. Tom, thanks for helping me!
The Eclipselink project has moved to Github: https://github.com/eclipse-ee4j/eclipselink
