[jboss-jira] [JBoss JIRA] (JGRP-2040) Seeing a OOM in JGroup 3.4

[Kshitiz Saxena (JIRA)]

Kshitiz Saxena created JGRP-2040:
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             Summary: Seeing a OOM in JGroup 3.4
                 Key: JGRP-2040
                 URL: https://issues.jboss.org/browse/JGRP-2040
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.4
         Environment: Linux Operating System
            Reporter: Kshitiz Saxena
            Assignee: Bela Ban


We are seeing an OOM in our application where thread dump points to JGroup.

We see the below in thread dumps,
3XEHSTTYPE     07:33:24:346241000 GMT j9vm.294 -  >setCurrentException index=11 constructorIndex=0 detailMessage=0000000000F61678 
3XEHSTTYPE     07:33:24:346183000 GMT j9mm.126 -   at 0000000050F8CD60 java/lang/Thread.run()V, jit 00007FCF323EA580, pc 00007FCF489E0A36 
3XEHSTTYPE     07:33:24:346179000 GMT j9mm.126 -   at 0000000053644748 *org/jgroups/blocks/TCPConnectionMap$TCPConnection$Receiver.run()*V, jit 0000000000000000, pc 00007FCF3354D334 
3XEHSTTYPE     07:33:24:346175000 GMT j9mm.101 -   J9AllocateIndexableObject() returning NULL! *1650814064 bytes* requested for object of class 0000000050F79700 from memory space 'Generational' id=00007FCF440427C0 

In the thread dump we also see 
WARNING : OutOfMemoryError possibly caused by 1650814064 bytes requested for object of class 0000000050F79700 from memory space 'Generational' id=00007FCF440427C0 
Java Heap Information
-Xmx (Maximum Java heap size) : 1280m
-Xms (Initial Java heap size) : 640m
-Xss (Maximum stack size for Java threads) : 256k 
Total Java heap size: 1.25 GB
Used Java heap size: 174.27 MB
Free Java heap size: 1.08 GB





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