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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5350) Name Node should report fsimage transfer time as a metric
Date Mon, 16 Dec 2013 17:33:16 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HDFS-5350:
------------------------------

    Attachment: trunk-5666_v2.patch

Andrew, thanks a lot for the review.  I fixed the GetImage metric. I also added a GetEdit
metric for edits transferring. Instead of adding a test in TestNameNodeMetrics, I added some
metrics checking in TestBackupNode#testCheckpointNode so that we don't have to copy the code
around (to create some image/edit related activities). How is that?

> Name Node should report fsimage transfer time as a metric
> ---------------------------------------------------------
>
>                 Key: HDFS-5350
>                 URL: https://issues.apache.org/jira/browse/HDFS-5350
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Rob Weltman
>            Assignee: Jimmy Xiang
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: trunk-5350.patch, trunk-5666_v2.patch
>
>
> If the (Secondary) Name Node reported fsimage transfer times (perhaps the last ten of
them), monitoring tools could detect slowdowns that might jeopardize cluster stability.



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