[jboss-jira] [JBoss JIRA] (JGRP-1482) NPE at org.jgroups.blocks.locking.Owner.equals(Owner.java:50)

[freeliuade freeliuade (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12703286#comment-12703286 ] 

freeliuade freeliuade commented on JGRP-1482:
---------------------------------------------

... then what's the impact? I'm using tryLock(10, TimeUnit.SECONDS) to get lock, does this NEP just means need try one more time to get a lock? or it will let one node get lock without another node's approve?
update jgroups version is too much work for us now at this stage, I'm try to convince people ignore this exception.
thanks!
                
> NPE at org.jgroups.blocks.locking.Owner.equals(Owner.java:50)
> -------------------------------------------------------------
>
>                 Key: JGRP-1482
>                 URL: https://issues.jboss.org/browse/JGRP-1482
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 2.12.1
>         Environment: CENTRAL_LOCK
>            Reporter: freeliuade freeliuade
>            Assignee: Bela Ban
>            Priority: Minor
>              Labels: CENTRAL_LOCK
>             Fix For: 3.0.11, 3.1
>
>
> a group has two nodes, lots of threads in the two nodes will compete locks (same lock name)
> it's a intermittent issue, only meet twice in 12 hours longivity test.
> below is the exception:
> 2012-05-17 01:41:20,232 ERROR [org.jgroups.protocols.UNICAST][Incoming-2,7fffffff-848a-e17f-7fff-ffffffd0d52f_domainservice,PEK-WKST1DBTB-7271] couldn't deliver message [dst: PEK-WKST1DBTB-7271, src: pek-wkstdkktk-44853 (3 headers), size=81 bytes, flags=DONT_BUNDLE]
> java.lang.NullPointerException
>          at org.jgroups.blocks.locking.Owner.equals(Owner.java:50)
>          at org.jgroups.protocols.Locking$ServerLock.handleRequest(Locking.java:689)
>          at org.jgroups.protocols.Locking.handleLockRequest(Locking.java:433)
>          at org.jgroups.protocols.Locking.up(Locking.java:231)
>          at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:150)
>          at org.jgroups.protocols.FRAG2.up(FRAG2.java:189)
>          at org.jgroups.protocols.FlowControl.up(FlowControl.java:418)
>          at org.jgroups.protocols.FlowControl.up(FlowControl.java:400)
>          at org.jgroups.protocols.pbcast.GMS.up(GMS.java:891)
>          at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:246)
>          at org.jgroups.protocols.VIEW_SYNC.up(VIEW_SYNC.java:170)
>          at org.jgroups.protocols.UNICAST.handleDataReceived(UNICAST.java:613)
>          at org.jgroups.protocols.UNICAST.up(UNICAST.java:294)
>          at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:703)
>          at org.jgroups.protocols.BARRIER.up(BARRIER.java:119)
>          at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:133)
>          at org.jgroups.protocols.FD_ALL.up(FD_ALL.java:177)
>          at org.jgroups.protocols.FD.up(FD.java:275)
>          at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:275)
>          at org.jgroups.protocols.MERGE2.up(MERGE2.java:209)
>          at org.jgroups.protocols.Discovery.up(Discovery.java:293)
>          at org.jgroups.protocols.PING.up(PING.java:69)
>          at org.jgroups.protocols.MPING.up(MPING.java:176)
>          at org.jgroups.protocols.TP.passMessageUp(TP.java:1109)
>          at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1665)
>          at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1647)
>          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>          at java.lang.Thread.run(Thread.java:662)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira