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Posted to hdfs-issues@hadoop.apache.org by "Hanisha Koneru (JIRA)" <ji...@apache.org> on 2016/08/29 22:39:22 UTC
[jira] [Comment Edited] (HDFS-10713) Throttle FsNameSystem lock
warnings
[ https://issues.apache.org/jira/browse/HDFS-10713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447279#comment-15447279 ]
Hanisha Koneru edited comment on HDFS-10713 at 8/29/16 10:39 PM:
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Patch 000 suppresses the write lock warnings for 2 mins (by default, configurable) and reports the first lock warning after this interval. It also reports the number of suppressed warnings.
was (Author: hanishakoneru):
Patch 000 suppresses the write lock warnings for 2 mins and reports the first lock warning after this interval. It also reports the number of suppressed warnings.
> Throttle FsNameSystem lock warnings
> -----------------------------------
>
> Key: HDFS-10713
> URL: https://issues.apache.org/jira/browse/HDFS-10713
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: logging, namenode
> Reporter: Arpit Agarwal
> Assignee: Hanisha Koneru
> Attachments: HDFS-10713.000.patch
>
>
> The NameNode logs a message if the FSNamesystem write lock is held by a thread for over 1 second. These messages can be throttled to at one most one per x minutes to avoid potentially filling up NN logs. We can also log the number of suppressed notices since the last log message.
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