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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-132) Namenode in Safemode reports to Simon non-zero number of deleted files during startup
Date Wed, 07 Apr 2010 20:42:33 GMT

     [ https://issues.apache.org/jira/browse/HDFS-132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-132:
---------------------------------

          Component/s: name-node
             Priority: Minor  (was: Major)
    Affects Version/s: 0.22.0
                       0.21.0
                       0.20.3
        Fix Version/s: 0.22.0
         Release Note: 
With this incompatible change, under metrics context "dfs", the record name "FSDirectory"
is no longer available. The metrics "files_deleted" from the deleted record "FSDirectory"
is now available in metrics context "dfs", record name "namenode" with the metrics name "FilesDeleted".

         Hadoop Flags: [Incompatible change, Reviewed]

> Namenode in Safemode reports to Simon non-zero number of deleted files during startup
> -------------------------------------------------------------------------------------
>
>                 Key: HDFS-132
>                 URL: https://issues.apache.org/jira/browse/HDFS-132
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.20.3, 0.21.0, 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Suresh Srinivas
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: HDFS-132.1.patch, HDFS-132.2.patch, HDFS-132.patch
>
>
> Currently when a namenode starts up it may call "delete" when loading edits. But metrics
file_deleted is collected and reported in FSDirectory where it does not and is not able to
check if namenode is in safemode. So from the monitoring UI, we see non-zero number of files
deleted.
> A possible fix is to have delete to return the number of files deleted and then the metrics
is collected and reported at NameNode the same as other namenode metrics.

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