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https://issues.apache.org/jira/browse/HDFS-13347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16417936#comment-16417936
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Íñigo Goiri commented on HDFS-13347:
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The conflicts were related to erasure coding and a minor difference with
java7/8.
I added [^HDFS-13347-branch-2.000.patch] with the actual diff for completeness
and did the cherry-pick for branch-2 and branch-2.9..
Thanks [~linyiqun] for committing the rest and [~giovanni.fumarola],
[~linyiqun], and [~shahrs87] for the review.
[~virajith], I'll take care of your comments in a follow up JIRA.
> RBF: Cache datanode reports
> ---------------------------
>
> Key: HDFS-13347
> URL: https://issues.apache.org/jira/browse/HDFS-13347
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.0
> Reporter: Íñigo Goiri
> Assignee: Íñigo Goiri
> Priority: Minor
> Fix For: 2.10.0, 2.9.1, 3.0.2, 3.2.0, 3.1.1
>
> Attachments: HDFS-13347-branch-2.000.patch, HDFS-13347.000.patch,
> HDFS-13347.001.patch, HDFS-13347.002.patch, HDFS-13347.003.patch,
> HDFS-13347.004.patch, HDFS-13347.005.patch, HDFS-13347.006.patch
>
>
> Getting the datanode reports is an expensive operation and can be executed
> very frequently by the UI and watchdogs. We should cache this information.
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