Robert Wagner created KAFKA-10470:
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Summary: zstd decompression with small batches is slow and causes
excessive GC
Key: KAFKA-10470
URL: https://issues.apache.org/jira/browse/KAFKA-10470
Project: Kafka
Issue Type: Bug
Affects Versions: 2.5.1
Reporter: Robert Wagner
Similar to KAFKA-5150 but for zstd instead of LZ4, it appears that a large
decompression buffer (128kb) created by zstd-jni per batch is causing a
significant performance bottleneck.
The next upcoming version of zstd-jni (1.4.5-7) will have a new constructor for
ZstdInputStream that allows the client to pass its own buffer. A similar fix
as [PR #2967|https://github.com/apache/kafka/pull/2967] could be used to have
the ZstdConstructor use a BufferSupplier to re-use the decompression buffer.
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