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https://issues.apache.org/jira/browse/HDFS-17270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-17270.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
> RBF: Fix ZKDelegationTokenSecretManagerImpl use closed zookeeper client to
> get token in some case
> --------------------------------------------------------------------------------------------------
>
> Key: HDFS-17270
> URL: https://issues.apache.org/jira/browse/HDFS-17270
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: lei w
> Assignee: lei w
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: CuratorFrameworkException
>
>
> Now, we use CuratorFramework to simplifies using ZooKeeper in
> ZKDelegationTokenSecretManagerImpl and we always hold the same
> zookeeperClient after initialization ZKDelegationTokenSecretManagerImpl. But
> in some cases like network problem , CuratorFramework may close current
> zookeeperClient and create new one. In this case , we will use a zkclient
> which has been closed to get token. We encountered this situation in our
> cluster，exception information in attachment.
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