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https://issues.apache.org/jira/browse/HDFS-16088?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hui Fei resolved HDFS-16088.
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Fix Version/s: 3.4.0
Resolution: Fixed
> Standby NameNode process getLiveDatanodeStorageReport request to reduce
> Active load
> -----------------------------------------------------------------------------------
>
> Key: HDFS-16088
> URL: https://issues.apache.org/jira/browse/HDFS-16088
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: tomscut
> Assignee: tomscut
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: standyby-ipcserver.jpg
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> As with HDFS-13183, NameNodeConnector#getLiveDatanodeStorageReport() can also
> request to SNN to reduce the ANN load.
> There are two points that need to be mentioned:
> 1. FSNamesystem#getDatanodeStorageReport() is OperationCategory.UNCHECKED,
> so we can access SNN directly.
> 2. We can share the same UT(testBalancerRequestSBNWithHA) with
> NameNodeConnector#getBlocks().
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