[jira] Commented: (HDFS-132) Namenode in Safemode reports to Simon non-zero number of deleted files during startup

["Suresh Srinivas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849504#action_12849504 ] 

Suresh Srinivas commented on HDFS-132:
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{{FSDirectory.directoryMetrics}} reports two metrics - files_created and files_deleted. This is unnecessary as it is already covered by the NameNodeMetrics  "FilesCreated" and "DeletedFileOps".

I propose deleting file_created and files_deleted metrics from FSDirectory.directoryMetrics. With that directoryMetrics will be reporting nothing. We could leave it in FSDirectory for future use or delete it altogether.

> 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
>            Reporter: Hairong Kuang
>
> 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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