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From "Di Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-12751) MapRed history server is shown as stopped after downgrade
Date Wed, 12 Aug 2015 22:14:46 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-12751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Di Li updated AMBARI-12751:
---------------------------
    Attachment: AMBARI-12751.patch

> 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
>          Components: ambari-server
>    Affects Versions: 2.1.0
>            Reporter: Di Li
>             Fix For: 2.1.2
>
>         Attachments: AMBARI-12751.patch
>
>
> 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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