[
https://issues.apache.org/jira/browse/HDFS-2420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tsz Wo Nicholas Sze resolved HDFS-2420.
---------------------------------------
Resolution: Not a Problem
I guess that this is not a problem anymore. Please feel free to reopen this if
I am wrong. Resolving ...
> improve handling of datanode timeouts
> -------------------------------------
>
> Key: HDFS-2420
> URL: https://issues.apache.org/jira/browse/HDFS-2420
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ron Bodkin
>
> If a datanode ever times out on a heart beat, it gets marked dead
> permanently. I am finding that on AWS this is a periodic occurrence, i.e.,
> datanodes time out although the datanode process is still alive. The current
> solution to this is to kill and restart each such process independently.
> It would be good if there were more retry logic (e.g., blacklisting the nodes
> but try heartbeats for a longer period before determining they are apparently
> dead). It would also be good if refreshNodes would check and attempt to
> recover timed out data nodes.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
