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From "Alejandro Fernandez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-11306) RU to copy correct version of tarball, including tez.tar.gz and mapreduce.tar.gz
Date Thu, 21 May 2015 15:48:17 GMT
Alejandro Fernandez created AMBARI-11306:
--------------------------------------------

             Summary: RU to copy correct version of tarball, including tez.tar.gz and mapreduce.tar.gz
                 Key: AMBARI-11306
                 URL: https://issues.apache.org/jira/browse/AMBARI-11306
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.0.0
            Reporter: Alejandro Fernandez
            Assignee: Alejandro Fernandez
             Fix For: 2.1.0


We copy tez.tar.gz to HDFS in several places, including Resource Manager Start. The problem
is that during Resource Manager Start in RU it copies 

/usr/hdp/current/tez-client/lib/tez.tar.gz to hdfs:///hdp/apps/{{ hdp_stack_version }}/tez/

for the hdp_stack_version value that comes from running "hdp-select status hadoop-yarn-resourcemanager".
So the destination is correct (uses the "to" version), but the source is incorrect because
the tez-client symlink is still pointing to the older version, since tez-client only switches
to the newer version when the Clients are upgraded, which occurs later during the orchestration.

Summary: Customers with Ambari 2.0.0 that performed an RU from say HDP 2.2.0.0 to 2.2.4.2
will not have the correct version of tez.tar.gz uploaded to HDFS.
Impact: Applications that depend on this tarball (Pig, Tez, Hive) will be running with older
classes. This does not appear to be breaking in HDP 2.2, otherwise customers would have reported
it. However, it certainly does have to be fixed in Ambari 2.1.0 because tez.tar.gz has more
significant changes and does encounter a version incompatibility error.




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