Chen Liang created HDFS-13880:
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Summary: Add mechanism to allow certain RPC calls to bypass sync
Key: HDFS-13880
URL: https://issues.apache.org/jira/browse/HDFS-13880
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Reporter: Chen Liang
Assignee: Chen Liang
Currently, every single call to NameNode will be synced, in the sense that
NameNode will not process it until state id catches up. But in certain cases,
we would like to bypass this check and allow the call to return immediately,
even when the server id is not up to date. One case could be the to-be-added
new API in HDFS-13749 that request for current state id. Others may include
calls that do not promise real time responses such as {{getContentSummary}}.
This Jira is to add the mechanism to allow certain calls to bypass sync.
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