Vitaly Brodetskyi created AMBARI-15677:
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Summary: Ambari needs to set HDFS GC settings correctly
Key: AMBARI-15677
URL: https://issues.apache.org/jira/browse/AMBARI-15677
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.2.2
Reporter: Vitaly Brodetskyi
Assignee: Vitaly Brodetskyi
Priority: Critical
Fix For: 2.2.2
We need to make sure the Namenode CMS GC settings are correct.
Ambari does not currently set -XX:CMSInitiatingOccupancyFraction=70 or
-XX:+UseCMSInitiatingOccupancyOnly. The NewSize needs also some tweaking: it
should be 1/8th to 1/10th of the namenode heap size in general, but it looks
like we would cap at 8 gb like here (this NN has 112 GB heap).
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