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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6718) add progress log to JHS during startup
Date Wed, 28 Sep 2016 23:18:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15531188#comment-15531188
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Hudson commented on MAPREDUCE-6718:
-----------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10509 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/10509/])
MAPREDUCE-6718. add progress log to JHS during startup (haibochen via (rkanter: rev 0d6778d800ff16366911e3b064f3af6162dee2e4)
* (edit) hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/HistoryFileManager.java


> add progress log to JHS during startup
> --------------------------------------
>
>                 Key: MAPREDUCE-6718
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6718
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobhistoryserver
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>            Priority: Minor
>              Labels: supportability
>             Fix For: 2.9.0, 3.0.0-alpha2
>
>         Attachments: mapreduce6718.001.patch, mapreduce6718.002.patch, mapreduce6718.003.patch
>
>
> lWhen the JHS starts up, it initializes the internal caches and storage via the HistoryFileManager.
If we have a large number of existing finished jobs then we could spent minutes in this startup
phase without logging progress:
> 2016-03-14 10:56:01,444 INFO org.apache.hadoop.mapreduce.v2.jobhistory.JobHistoryUtils:
Default file system [hdfs://hadoopcdh.itnas01.ieee.org:8020]
> 2016-03-14 10:56:11,455 INFO org.apache.hadoop.mapreduce.v2.hs.HistoryFileManager: Initializing
Existing Jobs...
> 2016-03-14 12:01:36,926 INFO org.apache.hadoop.mapreduce.v2.hs.CachedHistoryStorage:
CachedHistoryStorage Init
> This makes it really difficult to assess if things are working correctly (it looks hung).
We can add logs to notify users of progress.



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