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From "Di Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-12751) MapRed history server is shown as stopped after downgrade
Date Wed, 12 Aug 2015 18:08:45 GMT
Di Li created AMBARI-12751:
------------------------------

             Summary: MapRed history server is shown as stopped after downgrade
                 Key: AMBARI-12751
                 URL: https://issues.apache.org/jira/browse/AMBARI-12751
             Project: Ambari
          Issue Type: Bug
    Affects Versions: 2.1.0
            Reporter: Di Li


RU precheck requires "mapreduce.jobhistory.recovery.store.class" property to be set in the
mapred-site.xml with value "org.apache.hadoop.mapreduce.v2.hs.HistoryServerLeveldbStateStoreService"

With this value set, the HDP 2.2 level MapRed history server can not start. It shows an err
about class  org.apache.hadoop.mapreduce.v2.hs.HistoryServerLeveldbStateStoreService does
not exist.

When downgrading, the mapred properties added to pass the RU precheck needs to be removed.



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