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From "Nichole Treadway (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-3691) Add compressor support for 'snappy', google's compressor
Date Fri, 06 May 2011 12:02:03 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nichole Treadway updated HBASE-3691:
------------------------------------

    Attachment: hbase-snappy-3691-trunk-003.patch

Thanks for the patch...I made a few additional changes in HColumnDescriptor, and I updated
the test files to include snappy.

I noticed there are places in the hbase.avro classes where snappy support would need to be
added in. Is it ok to add these changes in the patch, or do the avro classes need to be auto-generated
somehow?

> Add compressor support for 'snappy', google's compressor
> --------------------------------------------------------
>
>                 Key: HBASE-3691
>                 URL: https://issues.apache.org/jira/browse/HBASE-3691
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: hbase-snappy-3691-trunk-002.patch, hbase-snappy-3691-trunk.patch
>
>
> http://code.google.com/p/snappy/ is apache licensed.
> bq. Snappy is a compression/decompression library. It does not aim for maximum compression,
or compatibility with any other compression library; instead, it aims for very high speeds
and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is
an order of magnitude faster for most inputs, but the resulting compressed files are anywhere
from 20% to 100% bigger. On a single core of a Core i7 processor in 64-bit mode, Snappy compresses
at about 250 MB/sec or more and decompresses at about 500 MB/sec or more.
> bq. Snappy is widely used inside Google, in everything from BigTable and MapReduce to
our internal RPC systems. (Snappy has previously been referred to as "Zippy" in some presentations
and the likes.)
> Lets get it in.

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