[
https://issues.apache.org/jira/browse/HDFS-9572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062533#comment-15062533
]
Arpit Agarwal commented on HDFS-9572:
-------------------------------------
+1 for the patch, pending Jenkins.
I also verified this manually with telnet. Nothing is logged at the default
INFO level when the DN gets an unexpected EOFException.
> Prevent DataNode log spam if a client connects on the data transfer port but
> sends no data.
> -------------------------------------------------------------------------------------------
>
> Key: HDFS-9572
> URL: https://issues.apache.org/jira/browse/HDFS-9572
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-9572.001.patch
>
>
> Monitoring tools may choose to check liveness of the DataNode's data transfer
> port by connecting to it. The monitoring tool will close the connection
> immediately after establishment without sending any data. When this happens,
> the DataNode encounters an unexpected EOF and logs a full stack trace. This
> creates unneeded noise in the logs.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
