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https://issues.apache.org/jira/browse/HDFS-15455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17152973#comment-17152973
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Íñigo Goiri commented on HDFS-15455:
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Thanks [~surmountian], can you post a backport of HDFS-13658 for branch-2.9?
> Expose HighestPriorityReplBlocks and LastReplicaBlocks statistics
> -----------------------------------------------------------------
>
> Key: HDFS-15455
> URL: https://issues.apache.org/jira/browse/HDFS-15455
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.9.0, 2.9.2
> Reporter: Xiao Liang
> Assignee: Xiao Liang
> Priority: Major
>
> Similar to HDFS-13658, blocks with only 1 replica may cause the lost of
> customer data, so we need to make this awared and take action if necessary.
> This change is for HDFS 2.9 as we will still be using it for some time and
> switching to HDFS 3.X is not simple work.
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