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https://reviews.apache.org/r/30912/
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Review request for Ambari, Dmitro Lisnichenko, Jonathan Hurley, Nate Cole,
Robert Levas, and Tom Beerbower.
Bugs: AMBARI-9559
https://issues.apache.org/jira/browse/AMBARI-9559
Repository: ambari
Description
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I reopened AMBARI-9559 for this additional patch.
While performing a RU, it failed in Finalize because the SECONDARY_NAMENODE
component was still on an old version, since it was not deleted by the Namenode
HA wizard.
This was a 3-node cluster with HDFS, MR, YARN, TEZ, Hive, ZK, Pig, AMS using
HDP 2.2.0.0 GA.
I was not able to reproduce this, even after installing the exact same services
on the same hosts, and using the same ambari-server version. It could be the
case that some thread is holding a reference to the object that is being
deleted, so it persists. So I added another check to
PreUpgradeCheckResourceProvider that ensures that SECONDARY_NAMENODE is not
present on any hosts.
Diffs
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ambari-server/src/main/java/org/apache/ambari/server/checks/SecondaryNamenodeDeletedCheck.java
ad967f8
Diff: https://reviews.apache.org/r/30912/diff/
Testing
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Deployed a 3-node cluster with HDFS, ZK, and added Namenode HA. I was able to
reproduce SECONDARY_NAMENODE not being deleted.
I then registered a repo and distributed it to the hosts, and when I tried to
perform a RU, the precheck correctly reported an error.
Unit tests are in progress.
Thanks,
Alejandro Fernandez
