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Posted to mapreduce-dev@hadoop.apache.org by "Deegue (Jira)" <ji...@apache.org> on 2020/12/14 11:26:00 UTC

[jira] [Created] (MAPREDUCE-7312) Add cache switch of MapReduce History Server

Deegue created MAPREDUCE-7312:
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             Summary: Add cache switch of MapReduce History Server
                 Key: MAPREDUCE-7312
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7312
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Deegue


History Server scans `done` directory while initializing. If there are millions of application files to cache, it will become a time demanding action.

In our cluster, it'll be 4+ hours before the initialization is done.

We added a switch to control whether doing initialized cache or not.



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