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Posted to issues@flink.apache.org by "Jingsong Lee (Jira)" <ji...@apache.org> on 2019/12/18 08:43:00 UTC

[jira] [Updated] (FLINK-15311) Lz4BlockCompressionFactory should use native compressor instead of java unsafe

     [ https://issues.apache.org/jira/browse/FLINK-15311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jingsong Lee updated FLINK-15311:
---------------------------------
    Description: 
According to:

[https://lz4.github.io/lz4-java/1.7.0/lz4-compression-benchmark/]

Java java unsafe compressor has lower performance than native lz4 compressor.

After FLINK-14845 , we use lz4 compression for shuffler.

In testing, I found shuffle using java unsafe compressor.

  was:
According to:

[https://lz4.github.io/lz4-java/1.7.0/lz4-compression-benchmark/]

Java java unsafe compressor has lower performance than native lz4 compressor.

In testing, I found shuffle using java unsafe compressor.


> Lz4BlockCompressionFactory should use native compressor instead of java unsafe
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-15311
>                 URL: https://issues.apache.org/jira/browse/FLINK-15311
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Network
>            Reporter: Jingsong Lee
>            Priority: Critical
>             Fix For: 1.10.0
>
>
> According to:
> [https://lz4.github.io/lz4-java/1.7.0/lz4-compression-benchmark/]
> Java java unsafe compressor has lower performance than native lz4 compressor.
> After FLINK-14845 , we use lz4 compression for shuffler.
> In testing, I found shuffle using java unsafe compressor.



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