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https://issues.apache.org/jira/browse/ARROW-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-3831.
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Resolution: Fixed
Fix Version/s: 0.12.0
Issue resolved by pull request 3024
[https://github.com/apache/arrow/pull/3024]
> [C++] arrow::util::Codec::Decompress() doesn't return decompressed data size
> ----------------------------------------------------------------------------
>
> Key: ARROW-3831
> URL: https://issues.apache.org/jira/browse/ARROW-3831
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 0.11.1
> Reporter: Kouhei Sutou
> Assignee: Kouhei Sutou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.12.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> We can't know decompressed data size when we only have compressed data. The
> current {{arrow::util::Codec::Decompress()}} doesn't return decompressed data
> size. So we can't know which data in {{output_buffer}} can be used.
> FYI: {{arrow::util::Codec::Compress()}} returns compressed data size.
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