Dikang Gu created CASSANDRA-12013:
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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.
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