hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8315) Datanode does not log reads
Date Fri, 08 May 2015 15:23:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14534707#comment-14534707

Kihwal Lee commented on HDFS-8315:

Changing log level of ClientTraceLog to debug will work for now since there is nothing else
logging at debug.

> Datanode does not log reads
> ---------------------------
>                 Key: HDFS-8315
>                 URL: https://issues.apache.org/jira/browse/HDFS-8315
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-8315.patch
> HDFS-6836 made datanode read request logging DEBUG.  There is a good reason why it was
at INFO for so many years.  This is very useful in debugging load issues. This jira will revert
> We haven't seen it being a bottleneck on busy hbase clusters, but if someone thinks it
is a serious overhead, please make it configurable in a separate jira.

This message was sent by Atlassian JIRA

View raw message