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Posted to dev@zookeeper.apache.org by "Jeremy Stribling (Commented) (JIRA)" <ji...@apache.org> on 2012/03/21 02:14:38 UTC
[jira] [Commented] (ZOOKEEPER-1100) Killed (or missing) SendThread
will cause hanging threads
[ https://issues.apache.org/jira/browse/ZOOKEEPER-1100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234007#comment-13234007 ]
Jeremy Stribling commented on ZOOKEEPER-1100:
---------------------------------------------
bq. Fixed by other refactorings and changes to client cnxn.
Did these refactorings happen in any 3.3.X or 3.4.X release? What JIRA are they related to? I think I am hitting this, and want to patch my system without upgrading to trunk. Do you all think I can just apply the attached patch to fix it? Or should I instead apply the patches Camille refers to above that are in trunk?
> Killed (or missing) SendThread will cause hanging threads
> ---------------------------------------------------------
>
> Key: ZOOKEEPER-1100
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1100
> Project: ZooKeeper
> Issue Type: Bug
> Components: java client
> Affects Versions: 3.3.3
> Environment: http://mail-archives.apache.org/mod_mbox/zookeeper-user/201106.mbox/%3Citpgb6$2mi$1@dough.gmane.org%3E
> Reporter: Gunnar Wagenknecht
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1100.patch, ZOOKEEPER-1100.patch
>
>
> After investigating an issues with [hanging threads|http://mail-archives.apache.org/mod_mbox/zookeeper-user/201106.mbox/%3Citpgb6$2mi$1@dough.gmane.org%3E] I noticed that any java.lang.Error might silently kill the SendThread. Without a SendThread any thread that wants to send something will hang forever.
> Currently nobody will recognize a SendThread that died. I think at least a state should be flipped (or flag should be set) that causes all further send attempts to fail or to re-spin the connection loop.
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