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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/34920/
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Review request for Ambari, Andrew Onischuk, Dmitro Lisnichenko, Jonathan 
Hurley, and Nate Cole.


Bugs: AMBARI-11605
    https://issues.apache.org/jira/browse/AMBARI-11605


Repository: ambari


Description
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When restarting HistoryServer for the first time during the Core Masters 
rolling upgrade, the restart fails because one of the NameNodes is still in 
safemode.

Turns out that now that the HDFS command run faster, by the time the 
HistorySever is restarted, it's still possible for the standby NameNode to 
still be in safemode.
For this reason, we must wait for both NameNodes to come out of safemode before 
proceeding to any other services or Service Checks.


Diffs
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ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_namenode.py
 5e824d0 
  
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py
 864961e 
  
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/utils.py
 38270e8 
  
ambari-server/src/main/resources/common-services/HIVE/0.12.0.2.0/package/scripts/params_linux.py
 6e12dd0 
  ambari-server/src/test/python/stacks/2.0.6/HDFS/test_namenode.py b7126fd 

Diff: https://reviews.apache.org/r/34920/diff/


Testing
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Deployed a cluster and copied the patched files, then enabled NameNode HA, and 
performed a successful RU.

----------------------------------------------------------------------
Total run:744
Total errors:0
Total failures:0
OK


Thanks,

Alejandro Fernandez

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