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https://issues.apache.org/jira/browse/HBASE-19870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16343294#comment-16343294
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Hudson commented on HBASE-19870:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #4489 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/4489/])
HBASE-19870 Fix the NPE in ReadOnlyZKClient#run (chia7712: rev
221eb9576839ecc976120197a4845a9a1e371d9c)
* (edit)
hbase-zookeeper/src/test/java/org/apache/hadoop/hbase/zookeeper/TestReadOnlyZKClient.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.java
> Fix the NPE in ReadOnlyZKClient#run
> -----------------------------------
>
> Key: HBASE-19870
> URL: https://issues.apache.org/jira/browse/HBASE-19870
> Project: HBase
> Issue Type: Sub-task
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Major
> Fix For: 2.0.0-beta-2
>
> Attachments: HBASE-19870-v2.patch
>
>
> I notice a NPE from my jenkins.
> {code}
> 2018-01-26 17:26:41,078 DEBUG [M:0;8546d406e429:40557-EventThread]
> zookeeper.ZKWatcher(443): replicationLogCleaner-0x161337ddc090004,
> quorum=localhost:56060, baseZNode=/hbase Received ZooKeeper Event, type=None,
> state=Disconnected, path=null
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:322)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> If any zk task invokes the #onComplete late, the count of current requests
> will not zero and then the null from task queue will destroy the work thread
> in ReadOnlyZKClient.
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