Max Xie created HDFS-16504:
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Summary: add `dfs.namenode.get-blocks.check.operation` to enable
or disable checkOperation when NNs process getBlocks
Key: HDFS-16504
URL: https://issues.apache.org/jira/browse/HDFS-16504
Project: Hadoop HDFS
Issue Type: Improvement
Components: balancer & mover, namanode
Affects Versions: 3.4.0
Reporter: Max Xie
HDFS-13183 add a nice feature that Standby NameNode can process getBlocks
request to reduce Active load. Namenode must set `dfs.ha.allow.stale.reads =
true` to enable this feature. However, if we set `dfs.ha.allow.stale.reads =
true`, Standby Namenode will be able to process all read requests, which may
lead to yarn jobs fail because Standby Namenode is stale .
Maybe we should add a config `dfs.namenode.get-blocks.check.operation=false`
for namenode to disable check operation when namenode process getBlocks
request.
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