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From "Ryan Blue (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-13126) Add Brotli compression codec
Date Tue, 10 May 2016 18:20:12 GMT
Ryan Blue created HADOOP-13126:
----------------------------------

             Summary: Add Brotli compression codec
                 Key: HADOOP-13126
                 URL: https://issues.apache.org/jira/browse/HADOOP-13126
             Project: Hadoop Common
          Issue Type: Improvement
          Components: io
            Reporter: Ryan Blue
            Assignee: Ryan Blue


I've been testing [Brotli|https://github.com/google/brotli/], a new compression library based
on LZ77 from Google. Google's [brotli benchmarks|https://cran.r-project.org/web/packages/brotli/vignettes/brotli-2015-09-22.pdf]
look really good and we're also seeing a significant improvement in compression size, compression
speed, or both.

{code:title=Brotli preliminary test results}
[blue@work Downloads]$ time parquet from test.parquet -o test.snappy.parquet --compression-codec
snappy --overwrite                      

real    1m17.106s
user    1m30.804s
sys     0m4.404s

[blue@work Downloads]$ time parquet from test.parquet -o test.br.parquet --compression-codec
brotli --overwrite                         

real    1m16.640s
user    1m24.244s
sys     0m6.412s

[blue@work Downloads]$ time parquet from test.parquet -o test.gz.parquet --compression-codec
gzip --overwrite                            

real    3m39.496s
user    3m48.736s
sys     0m3.880s

[blue@work Downloads]$ ls -l
-rw-r--r-- 1 blue blue 1068821936 May 10 11:06 test.br.parquet
-rw-r--r-- 1 blue blue 1421601880 May 10 11:10 test.gz.parquet
-rw-r--r-- 1 blue blue 2265950833 May 10 10:30 test.snappy.parquet
{code}

Brotli, at quality 1, is as fast as snappy and ends up smaller than gzip-9. Another test resulted
in a slightly larger Brotli file than gzip produced, but Brotli was 4x faster. I'd like to
get this compression codec into Hadoop.

[Brotli is licensed with the MIT license|https://github.com/google/brotli/blob/master/LICENSE],
and the [JNI library jbrotli is ALv2|https://github.com/MeteoGroup/jbrotli/blob/master/LICENSE].



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