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https://issues.apache.org/jira/browse/HBASE-16117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378413#comment-15378413
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Jonathan Hsieh commented on HBASE-16117:
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About the branch-1.001 patch version -- failure is unrelated.
This patch undoes what the release not says is a problem, and now is
essentially compatible except that it throws an exception if zk connection
fails first).
> Fix Connection leak in mapred.TableOutputFormat
> ------------------------------------------------
>
> Key: HBASE-16117
> URL: https://issues.apache.org/jira/browse/HBASE-16117
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 2.0.0, 1.3.0, 1.2.2, 1.1.6
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Fix For: 2.0.0, 1.1.6, 1.3.1, 1.2.3
>
> Attachments: HBASE-16117.branch-1.001.patch,
> hbase-16117.branch-1.patch, hbase-16117.patch, hbase-16117.v2.branch-1.patch,
> hbase-16117.v2.patch, hbase-16117.v3.branch-1.patch, hbase-16117.v3.patch,
> hbase-16117.v4.patch
>
>
> Spark seems to instantiate multiple instances of output formats within a
> single process. When mapred.TableOutputFormat (not
> mapreduce.TableOutputFormat) is used, this may cause connection leaks that
> slowly exhaust the cluster's zk connections.
> This patch fixes that.
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