[
https://issues.apache.org/jira/browse/HDFS-5922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13897151#comment-13897151
]
Arpit Agarwal commented on HDFS-5922:
-------------------------------------
Hi Aaron,
Good catch and thanks for the detailed explanation.
I can fix it today if you haven't started. This probably needs to be in 2.3.
> DN heartbeat thread can get stuck in tight loop
> -----------------------------------------------
>
> Key: HDFS-5922
> URL: https://issues.apache.org/jira/browse/HDFS-5922
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.3.0
> Reporter: Aaron T. Myers
>
> We saw an issue recently on a test cluster where one of the DN threads was
> consuming 100% of a single CPU. Running jstack indicated that it was the DN
> heartbeat thread. I believe I've tracked down the cause to a bug in the
> accounting around the value of {{pendingReceivedRequests}}.
> More details in the first comment.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
