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https://issues.apache.org/jira/browse/HDFS-16505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18038600#comment-18038600
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ASF GitHub Bot commented on HDFS-16505:
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github-actions[bot] closed pull request #4071: HDFS-16505. Setting safemode
should not be interrupted by abnormal nodes
URL: https://github.com/apache/hadoop/pull/4071
> Setting safemode should not be interrupted by abnormal nodes
> ------------------------------------------------------------
>
> Key: HDFS-16505
> URL: https://issues.apache.org/jira/browse/HDFS-16505
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Tao Li
> Assignee: Tao Li
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2022-03-15-09-29-36-538.png,
> image-2022-03-15-09-29-44-430.png
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Setting safemode should not be interrupted by abnormal nodes.
> For example, we have four namenodes configured in the following order:
> NS1 -> active
> NS2 -> standby
> NS3 -> observer
> NS4 -> observer.
> When the {color:#FF0000}NS1 {color}process exits, setting the states of
> safemode, {color:#FF0000}NS2{color}, {color:#FF0000}NS3{color}, and
> {color:#FF0000}NS4 {color}fails. Similarly, when the
> {color:#FF0000}NS2{color} process exits, only the safemode state of
> {color:#FF0000}NS1{color} can be set successfully.
>
> When the {color:#FF0000}NS1{color} process exits:
> Before the change:
> !image-2022-03-15-09-29-36-538.png|width=1145,height=97!
> After the change:
> !image-2022-03-15-09-29-44-430.png|width=1104,height=119!
>
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