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https://issues.apache.org/jira/browse/HDFS-13522?focusedWorklogId=792417&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-792417
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ASF GitHub Bot logged work on HDFS-13522:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Jul/22 02:35
Start Date: 19/Jul/22 02:35
Worklog Time Spent: 10m
Work Description: zhengchenyu commented on code in PR #4311:
URL: https://github.com/apache/hadoop/pull/4311#discussion_r924006263
##########
hadoop-common-project/hadoop-common/src/main/proto/RpcHeader.proto:
##########
@@ -91,6 +91,7 @@ message RpcRequestHeaderProto { // the header for the
RpcRequest
optional RPCTraceInfoProto traceInfo = 6; // tracing info
optional RPCCallerContextProto callerContext = 7; // call context
optional int64 stateId = 8; // The last seen Global State ID
+ map<string, int64> nameserviceStateIds = 9; // Last seen state IDs for
multiple nameservices.
Review Comment:
But it is not supported in my Mac. My proto compiler version as below:
```
% protoc --version
libprotoc 2.5.0
```
In github release,I found it is supported after v3.0.0-alpha-2. See link:
https://github.com/protocolbuffers/protobuf/releases?page=10
Issue Time Tracking
-------------------
Worklog Id: (was: 792417)
Time Spent: 19.5h (was: 19h 20m)
> RBF: Support observer node from Router-Based Federation
> -------------------------------------------------------
>
> Key: HDFS-13522
> URL: https://issues.apache.org/jira/browse/HDFS-13522
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: federation, namenode
> Reporter: Erik Krogen
> Assignee: Simbarashe Dzinamarira
> Priority: Major
> Labels: pull-request-available
> Attachments: HDFS-13522.001.patch, HDFS-13522.002.patch,
> HDFS-13522_WIP.patch, RBF_ Observer support.pdf, Router+Observer RPC
> clogging.png, ShortTerm-Routers+Observer.png,
> observer_reads_in_rbf_proposal_simbadzina_v1.pdf
>
> Time Spent: 19.5h
> Remaining Estimate: 0h
>
> Changes will need to occur to the router to support the new observer node.
> One such change will be to make the router understand the observer state,
> e.g. {{FederationNamenodeServiceState}}.
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