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Posted to issues@beam.apache.org by "Kenneth Knowles (Jira)" <ji...@apache.org> on 2022/06/03 16:15:00 UTC

[jira] [Commented] (BEAM-683) Make BZIP compressed files splittable

    [ https://issues.apache.org/jira/browse/BEAM-683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17546165#comment-17546165 ] 

Kenneth Knowles commented on BEAM-683:
--------------------------------------

This issue has been migrated to https://github.com/apache/beam/issues/18050

> Make BZIP compressed files splittable 
> --------------------------------------
>
>                 Key: BEAM-683
>                 URL: https://issues.apache.org/jira/browse/BEAM-683
>             Project: Beam
>          Issue Type: Wish
>          Components: sdk-java-core, sdk-py-core
>            Reporter: Tim Sears
>            Priority: P3
>              Labels: Clarified
>   Original Estimate: 10h
>  Remaining Estimate: 10h
>
> Bzip2 is compressed as blocks, so it should be possible to do dynamic splitting. To do this: Seek to a location in the bzip, then keep seeking until you find the 6 byte block-start sequence 0x314159265359 (which is the 12 digit approximation of pi). You can use a bzip2 decompressor from that point onwards.



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