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https://issues.apache.org/jira/browse/HDFS-6652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056936#comment-14056936
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Juan Yu commented on HDFS-6652:
-------------------------------

The lease recovery failure is related to HDFS-4504

> RecoverLease cannot success and file cannot be closed under high load
> ---------------------------------------------------------------------
>
>                 Key: HDFS-6652
>                 URL: https://issues.apache.org/jira/browse/HDFS-6652
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Juan Yu
>            Priority: Minor
>         Attachments: testLeaseRecoveryWithMultiWriters.patch
>
>
> When there are multiple clients try to write to the same file frequently, 
> there is chance that block state goes wrong so lease recovery cannot be done 
> and  file cannot be closed.



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