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https://issues.apache.org/jira/browse/LUCENE-4584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508110#comment-13508110
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Adrien Grand commented on LUCENE-4584:
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Testing cross-implementation compression/decompression would indeed be very
cool but I'm a little worried about adding the sources of LZ4 and a task to
compile C code to the lucene-core build (or maybe I could do these LZ4 tests in
a dedicated module so that it doesn't make lucene-core depend on native code?).
I think we should also compare the output bytes to make sure the compressor is
efficient (a perfectly valid LZ4 implementation would be to always write a
single sequence that only contains the input bytes as literals, this is what
should happen only when the input is incompressible). Given that the LZ4 output
depends on the endianess of the machine, this can unfortunately only be done
with static files.
> Compare the LZ4 implementation in Lucene against the original impl
> ------------------------------------------------------------------
>
> Key: LUCENE-4584
> URL: https://issues.apache.org/jira/browse/LUCENE-4584
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Blocker
> Fix For: 4.1
>
>
> We should add tests to make sure that the LZ4 impl in Lucene compresses data
> the exact same way as the original impl.
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