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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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tomscut updated HDFS-16088:
---------------------------
Description:
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#getLiveDatanodeStorageReport() is OperationCategory.UNCHECKED,
so we can access SNN directly.
2. We can share the same UT(testBalancerRequestSBNWithHA) with
NameNodeConnector#getBlocks().
was:
As with [HDFS-13183|https://issues.apache.org/jira/browse/HDFS-13183],
NameNodeConnector#getLiveDatanodeStorageReport() can also request to SNN to
reduce the ANN load.
There are two points that need to be mentioned:
1. NameNodeConnector#getLiveDatanodeStorageReport() is
OperationCategory.UNCHECKED in FSNamesystem, so we can access SNN directly.
2. We can share the same UT(testBalancerRequestSBNWithHA) with
NameNodeConnector#getBlocks().
> 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: Minor
> Labels: pull-request-available
> Time Spent: 0.5h
> 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#getLiveDatanodeStorageReport() is
> OperationCategory.UNCHECKED, so we can access SNN directly.
> 2. We can share the same UT(testBalancerRequestSBNWithHA) with
> NameNodeConnector#getBlocks().
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