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https://issues.apache.org/jira/browse/HBASE-17440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15815563#comment-15815563
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Hudson commented on HBASE-17440:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-0.98-on-Hadoop-1.1 #1302 (See
[https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/1302/])
HBASE-17440 [0.98] Make sure DelayedClosing chore is stopped as soon as (larsh:
rev f30a654482e481045f30fbd743cd08f6175da125)
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
> [0.98] Make sure DelayedClosing chore is stopped as soon as an HConnection is
> closed
> ------------------------------------------------------------------------------------
>
> Key: HBASE-17440
> URL: https://issues.apache.org/jira/browse/HBASE-17440
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.24
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 0.98.25
>
> Attachments: 17440.txt
>
>
> We're seeing many issue with run-away ZK client connection in long running
> app servers. 10k or more send or event threads are happening frequently.
> While I looked around in the code I noticed that DelayedClosing closing is
> not immediately ended when an HConnection is closed, when there's an issue
> with HBase or ZK and client reconnect in a tight loop, this can lead
> temporarily to very many threads running. These will all get cleaned out
> after at most 60s, but during that time a lot of threads can be created.
> The fix is a one-liner. We'll likely file other issues soon.
> Interestingly branch-1 and beyond do not have this chore anymore, although -
> at least in branch-1 and later - I still see the ZooKeeperAliveConnection.
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