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https://issues.apache.org/jira/browse/HDFS-13347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Íñigo Goiri updated HDFS-13347:
-------------------------------
Description:
Getting the datanode reports is an expensive operation and can be executed very
frequently by the UI and watchdogs.
To reduce this load, this information should be cached in the Router.
was:Getting the datanode reports is an expensive operation and can be
executed very frequently by the UI and watchdogs. We should cache this
information.
> 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: 3.1.0, 2.10.0, 2.9.1, 3.0.3
>
> 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.
> To reduce this load, this information should be cached in the Router.
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