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https://issues.apache.org/jira/browse/PHOENIX-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16216370#comment-16216370
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Jepson commented on PHOENIX-4247:
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I has also this problem.
The zookeeper connections can't be auto closed.
> Phoenix/Spark/ZK connection
> ---------------------------
>
> Key: PHOENIX-4247
> URL: https://issues.apache.org/jira/browse/PHOENIX-4247
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.10.0
> Environment: HBase 1.2
> Spark 1.6
> Phoenix 4.10
> Reporter: Kumar Palaniappan
>
> After upgrading to CDH 5.9.1/Phoenix 4.10/Spark 1.6 from CDH 5.5.2/Phoenix
> 4.6/Spark 1.5, streaming jobs that read data from Phoenix no longer release
> their zookeeper connections, meaning that the number of connections from the
> driver grow with each batch until the ZooKeeper limit on connections per IP
> address is reached, at which point the Spark streaming job can no longer read
> data from Phoenix.
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