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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4048) Use ERROR instead of INFO for volume failure logs
Date Fri, 09 Nov 2012 14:02:19 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13494009#comment-13494009
] 

Hudson commented on HDFS-4048:
------------------------------

Integrated in Hadoop-Mapreduce-trunk #1251 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1251/])
    HDFS-4048. Use ERROR instead of INFO for volume failure logs. Contributed by Stephen Chu
(Revision 1407345)

     Result = FAILURE
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1407345
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Storage.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java

                
> Use ERROR instead of INFO for volume failure logs
> -------------------------------------------------
>
>                 Key: HDFS-4048
>                 URL: https://issues.apache.org/jira/browse/HDFS-4048
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0-alpha
>            Reporter: Stephen Chu
>            Assignee: Stephen Chu
>             Fix For: 2.0.3-alpha
>
>         Attachments: HDFS-4048.patch.branch-2, HDFS-4048.patch.branch-2.2, HDFS-4048.patch.trunk,
HDFS-4048.patch.trunk.2, HDFS-4048.patch.trunk.3
>
>
> I misconfigured the permissions of the DataNode data directories (they were owned by
root, instead of hdfs).
> I wasn't aware of this misconfiguration until a few days later. I usually search through
the logs for WARN and ERROR but didn't find messages at these levels that indicated volume
failure.
> After more carefully reading the logs, I found:
> {code}
> 2012-10-01 13:07:10,440 INFO org.apache.hadoop.hdfs.server.common.Storage: Cannot access
storage directory /data/4/dfs/dn
> 2012-10-01 13:07:10,440 INFO org.apache.hadoop.hdfs.server.common.Storage: Storage directory
/data/4/dfs/dn does not exist.
> {code}
> I think we should bump the log level to ERROR. This will make the problem more visible
to users.

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