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https://issues.apache.org/jira/browse/RANGER-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16239942#comment-16239942
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Ramesh Mani commented on RANGER-1837:
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[~bosco] Thanks for the review and comments. Yes we need specify that each
components plugin will have its owner who should have the rwx access to the
hdfs folder where audit has been written. I shall update the README.txt and
address your review comments.
> Enhance Ranger Audit to HDFS to support ORC file format
> -------------------------------------------------------
>
> Key: RANGER-1837
> URL: https://issues.apache.org/jira/browse/RANGER-1837
> Project: Ranger
> Issue Type: Improvement
> Components: audit
> Reporter: Kevin Risden
> Attachments:
> 0001-RANGER-1837-Enhance-Ranger-Audit-to-HDFS-to-support-.patch
>
>
> My team has done some research and found that Ranger HDFS audits are:
> * Stored as JSON objects (one per line)
> * Not compressed
> This is currently very verbose and would benefit from compression since this
> data is not frequently accessed.
> From Bosco on the mailing list:
> {quote}You are right, currently one of the options is saving the audits in
> HDFS itself as JSON files in one folder per day. I have loaded these JSON
> files from the folder into Hive as compressed ORC format. The compressed
> files in ORC were less than 10% of the original size. So, it was significant
> decrease in size. Also, it is easier to run analytics on the Hive tables.
>
> So, there are couple of ways of doing it.
>
> Write an Oozie job which runs every night and loads the previous day worth
> audit logs into ORC or other format
> Write a AuditDestination which can write into the format you want to.
>
> Regardless which approach you take, this would be a good feature for
> Ranger.{quote}
> http://mail-archives.apache.org/mod_mbox/ranger-user/201710.mbox/%3CCAJU9nmiYzzUUX1uDEysLAcMti4iLmX7RE%3DmN2%3DdoLaaQf87njQ%40mail.gmail.com%3E
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