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https://issues.apache.org/jira/browse/OOZIE-103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13101841#comment-13101841
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Hadoop QA commented on OOZIE-103:
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tucu00 remarked:
Functionality-wise it makes sense as an initial approach.
Implementation-wise I would prefer not using a DB table, instead I suggest a
simpler approach:
* Using a memory structure to keep tab on the blacklisted JTs/NNs, times and
mode (auto/admin).
* A configuration property can provide a list of blacklisted JTs/NNs at startup.
> GH-68: Better reporting/handling of problems in Hadoop
> ------------------------------------------------------
>
> Key: OOZIE-103
> URL: https://issues.apache.org/jira/browse/OOZIE-103
> Project: Oozie
> Issue Type: Bug
> Reporter: Hadoop QA
>
> Add instrumentation to track performance stats of NN and JT (how long to get
> directory listing on hdfs; how long to submit a job or query JT queue)
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