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https://issues.apache.org/jira/browse/SPARK-34651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17306782#comment-17306782
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Stanislav Savulchik commented on SPARK-34651:
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[~dongjoon]
bq. Well, it's a different codec technically. Apache Spark has its own
ZStandardCodec class instead of Apache Hadoop ZStandardCodec.
I believe you are referring to [org.apache.spark.io.ZStdCompressionCodec
|https://github.com/apache/spark/blob/1f6089b165181472e581ed0466694d28ed9b8de8/core/src/main/scala/org/apache/spark/io/CompressionCodec.scala#L213]
that is used for spark internal use cases like compressing shuffled data,
isn't it?
bq. BTW, please note that Apache Hadoop ZStandardCodec exists only at Hadoop
2.9+ (HADOOP-13578) and Apache Spark still supports Hadoop 2.7 distribution.
I guess it is the reason why org.apache.hadoop.io.compress.ZStandardCodec is
not on the
[list|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CompressionCodecs.scala#L29].
Thank you!
> Improve ZSTD support
> --------------------
>
> Key: SPARK-34651
> URL: https://issues.apache.org/jira/browse/SPARK-34651
> Project: Spark
> Issue Type: Umbrella
> Components: Spark Core, SQL
> Affects Versions: 3.2.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
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