[
https://issues.apache.org/jira/browse/HADOOP-12250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14632180#comment-14632180
]
Ming Ma commented on HADOOP-12250:
----------------------------------
[~arpitagarwal]. That sounds good.
* Are you going to enable both fair call queue and rpc backoff? You can enable
one without the other. But it works better if they are enabled together so that
only the bad users will be asked to back off.
* Optionally we might want to adjust {{dfs.client.retry.max.attempts}} setting
so that it can retry more in the case of NN congestion. The default value of
the setting is 10, equivalent to around 90 seconds. We set the value to 44
equivalent to 10 minutes.
> Enable RPC Congestion control by default
> ----------------------------------------
>
> Key: HADOOP-12250
> URL: https://issues.apache.org/jira/browse/HADOOP-12250
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
>
> We propose enabling RPC congestion control introduced by HADOOP-10597 by
> default.
> We enabled it on a couple of large clusters a few weeks ago and it has helped
> keep the namenodes responsive under load.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
