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Posted to hdfs-issues@hadoop.apache.org by "Erik Krogen (Jira)" <ji...@apache.org> on 2019/11/11 22:47:00 UTC
[jira] [Updated] (HDFS-14979) [Observer Node] Balancer should
submit getBlocks to Observer Node when possible
[ https://issues.apache.org/jira/browse/HDFS-14979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erik Krogen updated HDFS-14979:
-------------------------------
Attachment: HDFS-14979.000.patch
> [Observer Node] Balancer should submit getBlocks to Observer Node when possible
> -------------------------------------------------------------------------------
>
> Key: HDFS-14979
> URL: https://issues.apache.org/jira/browse/HDFS-14979
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover, hdfs
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Major
> Attachments: HDFS-14979.000.patch
>
>
> In HDFS-14162, we made it so that the Balancer could function when {{ObserverReadProxyProvider}} was in use. However, the Balancer would still read from the active NameNode, because {{getBlocks}} wasn't annotated as {{@ReadOnly}}. This task is to enable the Balancer to actually read from the Observer Node to alleviate load from the active NameNode.
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