Adrien Grand created LUCENE-9059:
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Summary: Reduce garbage created by ByteBuffersDataOutput
Key: LUCENE-9059
URL: https://issues.apache.org/jira/browse/LUCENE-9059
Project: Lucene - Core
Issue Type: Improvement
Reporter: Adrien Grand
When profiling indexing because of LUCENE-9027, I noticed that indexing
produces a lot of unnecessary garbage because of ByteBuffersDataOutput, which
can easily get fixed:
- reset() is implemented using streams, which apparently create lots of objects
- copyTo has an optimization for the case that ByteBuffers are backed by an
array that never gets used because toBufferList makes the buffers read-only,
which in-turn disallows access to the array
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