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https://issues.apache.org/jira/browse/HDFS-16498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-16498.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
Committed to trunk. Thanks @tomscut for your contribution!
> Fix NPE for checkBlockReportLease
> ---------------------------------
>
> Key: HDFS-16498
> URL: https://issues.apache.org/jira/browse/HDFS-16498
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: tomscut
> Assignee: tomscut
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: image-2022-03-09-20-35-22-028.png, screenshot-1.png
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> During the restart of Namenode, a Datanode is not registered, but this
> Datanode triggers FBR, which causes NPE.
> !image-2022-03-09-20-35-22-028.png|width=871,height=158!
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