Jonathan Ellis created CASSANDRA-5344:
-----------------------------------------
Summary: Make LCR less memory-abusive
Key: CASSANDRA-5344
URL: https://issues.apache.org/jira/browse/CASSANDRA-5344
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Jonathan Ellis
Priority: Minor
We've seen several reports of compaction causing GC pauses. You would think
this would be the fault of PCR (which materializes the rows in memory) but LCR
seems to be more of a problem.
I hypothesize that PCR mostly generates just young-gen garbage, but since LCR
keeps the BF and row index in-memory for a long time (from construction, until
after the row has been merged and written), it gets tenured and can cause
fragmentation or promotion failures.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
