[RANGER-1837] Enhance Ranger Audit to HDFS to support ORC file format

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 3.0.0, 2.2.0
• Component/s: audit
• Assignee: Ramesh Mani
• Reporter: Kevin Risden
• Created: 13/Oct/17 13:07
• Updated: 08/Sep/24 17:29
• Resolved: 02/Apr/21 05:38

Description

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:

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.

http://mail-archives.apache.org/mod_mbox/ranger-user/201710.mbox/%3CCAJU9nmiYzzUUX1uDEysLAcMti4iLmX7RE%3DmN2%3DdoLaaQf87njQ%40mail.gmail.com%3E

Issue Links

• is related to: RANGER-3531 Store Spooled Audits in Avro Format
• links to: Review Link