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https://issues.apache.org/jira/browse/FLINK-11858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16789483#comment-16789483
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Kurt Young commented on FLINK-11858:
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Sorry about that, i added some description.
> Introduce block compressor/decompressor for batch table runtime
> ---------------------------------------------------------------
>
> Key: FLINK-11858
> URL: https://issues.apache.org/jira/browse/FLINK-11858
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Operators
> Reporter: Kurt Young
> Assignee: Kurt Young
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.9.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Introduce block compressor/decompressor API to support future compression of
> the spilled data in batch table runtime. The compressor/decompressor works on
> block one at a time. A block is a piece of continuous data stored either in
> `byte[]` or `ByteBuffer`. We will first support lz4 compression algorithm.
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