Istvan Toth created PHOENIX-6670:
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Summary: Optimize PhoenixKeyValueUtil#maybeCopyCell
Key: PHOENIX-6670
URL: https://issues.apache.org/jira/browse/PHOENIX-6670
Project: Phoenix
Issue Type: Improvement
Components: core
Affects Versions: 5.2.0
Reporter: Istvan Toth
PhoenixKeyValueUtil#maybeCopyCell copies every cell that is not a KeyValue to a
keyValue.
It's point is to copy Off-Heap cells to the Heap, so that the values are kept
after the backing ByteBuffer is freed, and we avoid use-after-free errors.
However, checking if a Cell is a KeyValue instance is a poor indication for
that, as there are a lot of Cell types that are not KeyValues, but are stored
on the heap, and do not need to be copied.
Copying only ByteBufferExtendedCell instances instead would potentially be a
significat performance gain.
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