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https://issues.apache.org/jira/browse/AMBARI-22684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300294#comment-16300294
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Kevin Risden commented on AMBARI-22684:
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RANGER-1938 is the same issue to fix in the Ranger project. This ticket is to
fix this for all Ambari Infra Solr deployments.
> Ambari Infra Solr should use DocValues by default
> -------------------------------------------------
>
> Key: AMBARI-22684
> URL: https://issues.apache.org/jira/browse/AMBARI-22684
> Project: Ambari
> Issue Type: Improvement
> Components: ambari-infra
> Affects Versions: 2.4.0, 2.5.0, 2.6.0
> Reporter: Kevin Risden
>
> Ranger uses Ambari Infra Solr (or another Apache Solr install) for storing
> Ranger Audit events for displaying in Ranger Admin. In our case, we have
> noticed quite a few Ambari Infra Solr OOM due to Ranger. I've talked with a
> few other people who are having very similar problems with OOM errors.
> I've typed up some details about how the way Ranger is using Solr requires a
> lot of heap. I've also outlined the fix for this which significantly reduced
> the amount of heap memory required. I'm an Apache Lucene/Solr committer so
> this optimization/usage might not be immediately obvious to those using Solr
> especially version 5.x.
> https://risdenk.github.io/2017/12/18/ambari-infra-solr-ranger.html
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