You are viewing a plain text version of this content. The canonical link for it is here.
Posted to jira@kafka.apache.org by "Chia-Ping Tsai (Jira)" <ji...@apache.org> on 2020/11/11 02:13:00 UTC
[jira] [Resolved] (KAFKA-10470) zstd decompression with small
batches is slow and causes excessive GC
[ https://issues.apache.org/jira/browse/KAFKA-10470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chia-Ping Tsai resolved KAFKA-10470.
------------------------------------
Fix Version/s: 2.8.0
Resolution: Fixed
> 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
> Assignee: James Yuzawa
> Priority: Major
> Fix For: 2.8.0
>
>
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)