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https://issues.apache.org/jira/browse/HDFS-16805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17618653#comment-17618653
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JiangHua Zhu commented on HDFS-16805:
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[~haiyang Hu], here is a similar jira: HDFS-16107
> Support set the number of RPC Readers according to different RPC Servers in
> NameNode
> ------------------------------------------------------------------------------------
>
> Key: HDFS-16805
> URL: https://issues.apache.org/jira/browse/HDFS-16805
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Haiyang Hu
> Assignee: Haiyang Hu
> Priority: Major
>
> Currently, multiple rpc servers are started in namenode, such as client rpc
> server, service rpc server, lifeline rpc server, and each rpc server used the
> same parameter 'ipc.server.read.threadpool.size' setting for the number of
> reader threads for this server .
> Consider according to different rpc server requirements set the number of
> reader threads for this server，for example:
> In client RPC server use parameter 'dfs.namenode.reader.count' ,
> In service RPC server use parameter 'dfs.namenode.service.reader.count' ,
> In lifeline RPC server use parameter 'dfs.namenode.lifeline.reader.count'
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