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From "Cui Xixin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-6951) History server slow startup if the event log directory is large
Date Wed, 08 Mar 2017 07:56:38 GMT

    [ https://issues.apache.org/jira/browse/SPARK-6951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15900871#comment-15900871
] 

Cui Xixin commented on SPARK-6951:
----------------------------------

In my case,the inprogress file is the main reason, so if the inprogress file is necessary
for the history server, or if  the  inprogress file can be cleaned up with the 'spark.history.fs.cleaner.maxAge'

> History server slow startup if the event log directory is large
> ---------------------------------------------------------------
>
>                 Key: SPARK-6951
>                 URL: https://issues.apache.org/jira/browse/SPARK-6951
>             Project: Spark
>          Issue Type: Bug
>          Components: Web UI
>    Affects Versions: 1.3.0
>            Reporter: Matt Cheah
>
> I started my history server, then navigated to the web UI where I expected to be able
to view some completed applications, but the webpage was not available. It turned out that
the History Server was not finished parsing all of the event logs in the event log directory
that I had specified. I had accumulated a lot of event logs from months of running Spark,
so it would have taken a very long time for the History Server to crunch through them all.
I purged the event log directory and started from scratch, and the UI loaded immediately.
> We should have a pagination strategy or parse the directory lazily to avoid needing to
wait after starting the history server.



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