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Adrien Grand commented on LUCENE-4584: -------------------------------------- bq. You wouldn't need static files if you compared output lengths Even the output length depends on the endianess: LZ4 uses a hash table without collision resolution (it maps hash -> last offset that produced this hash) to find matchs of 4 consecutive bytes in the input bytes, and this hash function is not endian-neutral (it interprets the 4 bytes as an 32-bits int, multiplies it by a prime number and keeps the 12 first bits (13 if there are less than 2^16 input bytes)), so the collisions won't be the same depending on the endianess and LZ4 won't find the same matchs. > 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 > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org