Rajesh Balamohan created HIVE-24960:
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             Summary: HMS: Fix initial delay of housekeeping threads in HMS
                 Key: HIVE-24960
                 URL: https://issues.apache.org/jira/browse/HIVE-24960
             Project: Hive
          Issue Type: Improvement
          Components: Metastore
            Reporter: Rajesh Balamohan


HMS starts house keeping threads in background. However, its initial delay is 
set to the frequency mentioned in MetastoreTaskThread. 

[https://github.com/apache/hive/blob/master/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/HiveMetaStore.java#L761]

For e.g, "hive.hook.proto.events.clean.freq" defaults to "1D" and the cleaner 
starts its initial iteration after a day. For frequently stopped/started 
clusters in cloud, this will not be ideal.

It will be good to introduce small random delay for the initial scheduling of 
these threads.
 



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