Steve Lacerda created CASSANDRA-19801:
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Summary: Ability to log large objects with query that's reading it
Key: CASSANDRA-19801
URL: https://issues.apache.org/jira/browse/CASSANDRA-19801
Project: Cassandra
Issue Type: Improvement
Reporter: Steve Lacerda
We often encounter cases where massive object allocations cause long GC pauses.
However, identifying the cause is very difficult because you have to use a
profile and catch the allocations before they GC.
It would be nice to add a TRACE level logger to the ReadCommand or ReadExecutor
classes that would allow us to turn on code that would calculate the cell size
and if over the heap region size (varies by heap size), trigger a message in
the logs that identifies the query that triggered the large read with the
partition key and query params so it's easy to ID the cell.
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