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https://issues.apache.org/jira/browse/HDFS-8820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HDFS-8820:
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Attachment: HDFS-8820.03.patch
Changed the title and description to reflect the changed intent. We got
requests to make these features easier to configure and also include the
service RPC port check within HDFS so if the administrator does the wrong thing
we don't silently break DN-NN communication at runtime (same thing mentioned by
[~mingma] above).
v03 patch allows enabling congestion control and fair call queue via NameNode
configuration settings and includes service RPC port check. I still communicate
intent from NameNodeRpcServer to IPC Server via config settings since I am
unsure whether changing the RPCEngine interface will be compatible. It is
somewhat ugly so if someone can confirm the RPCEngine interface can be changed
I can use the builder approach suggested by Ming.
> Simplify enabling NameNode RPC congestion control and FairCallQueue
> -------------------------------------------------------------------
>
> Key: HDFS-8820
> URL: https://issues.apache.org/jira/browse/HDFS-8820
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Attachments: HDFS-8820.01.patch, HDFS-8820.02.patch,
> HDFS-8820.03.patch
>
>
> Enabling RPC Congestion control and FairCallQueue settings can be simplified
> with HDFS-specific configuration keys. Currently the configuration requires
> knowing the exact RPC port number and also whether the service RPC port is
> enabled or not separately. If a separate service RPC endpoint is not defined
> then RPC congestion control must be enabled ([see
> comment|https://issues.apache.org/jira/browse/HDFS-8820?focusedCommentId=14987848&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14987848]
> from [~mingma] below.
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