Plamen Jeliazkov created HDFS-13331:
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Summary: Add lastSeenStateId to RpcRequestHeader.
Key: HDFS-13331
URL: https://issues.apache.org/jira/browse/HDFS-13331
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Plamen Jeliazkov
Assignee: Plamen Jeliazkov
HDFS-12977 added a stateId into the RpcResponseHeader which is returned by
NameNode and stored by DFSClient.
This JIRA is to followup on that work and have the DFSClient send their stored
"lastSeenStateId" in the RpcRequestHeader so that ObserverNodes can then
compare with their own and act accordingly.
This JIRA work focuses on just the part of making DFSClient send their state
through RpcRequestHeader.
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