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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/01/27 13:58:00 UTC
[jira] [Work logged] (BEAM-11658) Add Snappy compression and
decompression support
[ https://issues.apache.org/jira/browse/BEAM-11658?focusedWorklogId=542845&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-542845 ]
ASF GitHub Bot logged work on BEAM-11658:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Jan/21 13:57
Start Date: 27/Jan/21 13:57
Worklog Time Spent: 10m
Work Description: ADBalici opened a new pull request #13821:
URL: https://github.com/apache/beam/pull/13821
Snappy is a compression/decompression library. It does not aim for maximum compression or compatibility with any other compression library; instead, it aims for very high speeds and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is an order of magnitude faster for most inputs, but the resulting compressed files are anywhere from 20% to 100% bigger.
Even if there is support for Snappy in Beam's dependencies, there was no way of matching .snappy files to the given (de)compressor.
This PR provides that.
R: @iemejia
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 542845)
Remaining Estimate: 0h
Time Spent: 10m
> Add Snappy compression and decompression support
> ------------------------------------------------
>
> Key: BEAM-11658
> URL: https://issues.apache.org/jira/browse/BEAM-11658
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-core
> Reporter: Andrei Balici
> Assignee: Andrei Balici
> Priority: P2
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Snappy is a compression/decompression library. It does not aim for maximum compression, or compatibility with any other compression library; instead, it aims for very high speeds and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is an order of magnitude faster for most inputs, but the resulting compressed files are anywhere from 20% to 100% bigger.
>
> Many data pipelines will have as input files .snappy compressed, and these currently have to be read by creating custom DoFn(s).
>
> It would be nice to see Beam support this out of the box, as it does currently for LZO. Snappy usually is faster than algorithms in the same class (e.g. LZO, LZF, QuickLZ, etc.) while achieving comparable compression ratios, so I see no reason leaving this out.
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