Hadoop QA commented on ZOOKEEPER-880:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 1036967.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified 
                        Please justify why no new tests are needed for this 
                        Also please list what manual steps were performed to 
verify this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    -1 findbugs.  The patch appears to introduce 8 new Findbugs (version 1.3.9) 

    +1 release audit.  The applied patch does not increase the total number of 
release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: 
Findbugs warnings: 
Console output: 

This message is automatically generated.

> QuorumCnxManager$SendWorker grows without bounds
> ------------------------------------------------
>                 Key: ZOOKEEPER-880
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-880
>             Project: Zookeeper
>          Issue Type: Bug
>    Affects Versions: 3.2.2
>            Reporter: Jean-Daniel Cryans
>            Priority: Critical
>         Attachments: hbase-hadoop-zookeeper-sv4borg12.log.gz, 
> hbase-hadoop-zookeeper-sv4borg9.log.gz, jstack, 
> TRACE-hbase-hadoop-zookeeper-sv4borg9.log.gz, ZOOKEEPER-880.patch
> We're seeing an issue where one server in the ensemble has a steady growing 
> number of QuorumCnxManager$SendWorker threads up to a point where the OS runs 
> out of native threads, and at the same time we see a lot of exceptions in the 
> logs.  This is on 3.2.2 and our config looks like:
> {noformat}
> tickTime=3000
> dataDir=/somewhere_thats_not_tmp
> clientPort=2181
> initLimit=10
> syncLimit=5
> server.0=sv4borg9:2888:3888
> server.1=sv4borg10:2888:3888
> server.2=sv4borg11:2888:3888
> server.3=sv4borg12:2888:3888
> server.4=sv4borg13:2888:3888
> {noformat}
> The issue is on the first server. I'm going to attach threads dumps and logs 
> in moment.

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