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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 is cached in the Router.
This cached information expires after some time (configurable).
was:
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.
> 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 is cached in the Router.
> This cached information expires after some time (configurable).
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