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https://issues.apache.org/jira/browse/KAFKA-10470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17217836#comment-17217836
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Robert Wagner commented on KAFKA-10470:
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sounds good
> 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
> Priority: Major
>
> 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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