Dikang Gu created CASSANDRA-12013: ------------------------------------- Summary: Optimize the isEOF() checking in RAR Key: CASSANDRA-12013 URL: https://issues.apache.org/jira/browse/CASSANDRA-12013 Project: Cassandra Issue Type: Improvement Reporter: Dikang Gu Assignee: Dikang Gu Priority: Minor Fix For: 2.2.x Attachments: Screenshot 2016-06-15 11.20.51.png
When I profile compaction in 2.1, I find the isEOF() is an expensive operation, and we do the check for each read in RAR, which I think is unnecessary. I attach a patch to only check isEOF() when we need to rebuffer, and then I do not see it from hotspot. -- This message was sent by Atlassian JIRA (v6.3.4#6332)