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https://issues.apache.org/jira/browse/HDFS-3803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434732#comment-13434732
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Suresh Srinivas commented on HDFS-3803:
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bq. I disagree, without the "Starting a new period" message it's very difficult
to diagnose the block pool scanner in production scenarios.
Let me know what production scenario you have in mind. Debug logs should be the
last resort for this kind of debugging. For thread related issues one can look
at java stack. I agree we should do it with metrics.
Currently this log is an annoyance. When HDFS-3194 goes in we can undo this
change.
> BlockPoolSliceScanner new work period notice is very chatty at INFO level
> -------------------------------------------------------------------------
>
> Key: HDFS-3803
> URL: https://issues.apache.org/jira/browse/HDFS-3803
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 2.1.0-alpha, 2.0.1-alpha
> Environment: Hadoop 2.0.1-alpha-SNAPSHOT
> Reporter: Andrew Purtell
> Priority: Minor
> Fix For: 2.1.0-alpha, 3.0.0
>
> Attachments: HDFS-3803.patch
>
>
> One line of ~140 chars logged every 5 seconds.
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