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https://issues.apache.org/jira/browse/HDFS-17306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17800964#comment-17800964
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ASF GitHub Bot commented on HDFS-17306:
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LiuGuH opened a new pull request, #6385:
URL: https://github.com/apache/hadoop/pull/6385
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### Description of PR
If a cluster has 3 nameservices: ns1, ns2,ns3, and ns1 has observer nodes,
and client comminutes with nameservices via DFSRouter.
If DFS_ROUTER_OBSERVER_READ_DEFAULT_KEY enable, the client will receive all
nameservices in RpcResponseHeaderProto. And ns2,ns3 statidid is
Long.MIN_VALUE,that is not necessary.
We should reduce rpc response size if nameservices don't enable observer
nodes.
> RBF:Router should not return nameservices that does not enable observer nodes
> in RpcResponseHeaderProto
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17306
> URL: https://issues.apache.org/jira/browse/HDFS-17306
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: liuguanghua
> Priority: Major
>
> If a cluster has 3 nameservices: ns1, ns2,ns3, and ns1 has observer
> nodes, and client via DFSRouter comminutes with nns.
> If DFS_ROUTER_OBSERVER_READ_DEFAULT_KEY enable, the client will
> receive all nameservices in RpcResponseHeaderProto.
> We should reduce rpc response size if nameservices don't enable
> observer nodes.
>
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