ASF GitHub Bot commented on PARQUET-1866:

shangxinli opened a new pull request #797:
URL: https://github.com/apache/parquet-mr/pull/797

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> Replace Hadoop ZSTD with JNI-ZSTD
> ---------------------------------
>                 Key: PARQUET-1866
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1866
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-mr
>    Affects Versions: 1.12.0
>            Reporter: Xinli Shang
>            Assignee: Xinli Shang
>            Priority: Major
>             Fix For: 1.12.0
> The parquet-mr repo has been using 
> [ZSTD-JNI|https://github.com/luben/zstd-jni/tree/master/src/main/java/com/github/luben/zstd]
>  for the parquet-cli project. It is a cleaner approach to use this JNI than 
> using Hadoop ZSTD compression, because 1) on the developing box, installing 
> Hadoop is cumbersome, 2) Older version of Hadoop doesn't support ZSTD. 
> Upgrading Hadoop is another pain. This Jira is to replace Hadoop ZSTD with 
> ZSTD-JNI for parquet-hadoop project. 
> According to the author of ZSTD-JNI, Flink, Spark, Cassandra all use ZSTD-JNI 
> for ZSTD.
> Another approach is to use https://github.com/airlift/aircompressor which is 
> a pure Java implementation. But it seems the compression level is not 
> adjustable in aircompressor. 

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