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Yingjie Cao commented on FLINK-15311: ------------------------------------- [~lzljs3620320] Thanks for reporting this issue. I will check why native implementation is not used. > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005)