QuorumCnxManager$SendWorker grows without bounds
------------------------------------------------
Key: ZOOKEEPER-880
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-880
Project: Zookeeper
Issue Type: Bug
Affects Versions: 3.2.2
Reporter: Jean-Daniel Cryans
Attachments: hbase-hadoop-zookeeper-sv4borg12.log.gz,
hbase-hadoop-zookeeper-sv4borg9.log.gz, jstack
We're seeing an issue where one server in the ensemble has a steady growing
number of QuorumCnxManager$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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