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https://issues.apache.org/jira/browse/RANGER-1938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16297749#comment-16297749
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Kevin Risden commented on RANGER-1938:
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https://reviews.apache.org/r/64740/
> Solr for Audit setup doesn't use DocValues effectively
> ------------------------------------------------------
>
> Key: RANGER-1938
> URL: https://issues.apache.org/jira/browse/RANGER-1938
> Project: Ranger
> Issue Type: Bug
> Components: audit
> Affects Versions: 0.6.0, 0.7.0, 0.6.1, 0.6.2, 0.6.3, 0.7.1
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Attachments:
> 0001-RANGER-1938-Enable-DocValues-for-more-fields-in-Solr.patch
>
>
> 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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