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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2017/03/28 23:20:42 UTC
[jira] [Commented] (HADOOP-13126) Add Brotli compression codec
[ https://issues.apache.org/jira/browse/HADOOP-13126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15946171#comment-15946171 ]
Hadoop QA commented on HADOOP-13126:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 6s{color} | {color:red} HADOOP-13126 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HADOOP-13126 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12831838/HADOOP-13126.5.patch |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/11966/console |
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> Add Brotli compression codec
> ----------------------------
>
> Key: HADOOP-13126
> URL: https://issues.apache.org/jira/browse/HADOOP-13126
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 2.7.2
> Reporter: Ryan Blue
> Assignee: Ryan Blue
> Attachments: HADOOP-13126.1.patch, HADOOP-13126.2.patch, HADOOP-13126.3.patch, HADOOP-13126.4.patch, HADOOP-13126.5.patch
>
>
> 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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