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https://issues.apache.org/jira/browse/CASSANDRA-2398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-2398.
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Resolution: Later
> Type specific compression
> -------------------------
>
> Key: CASSANDRA-2398
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2398
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Stu Hood
> Labels: compression
> Attachments:
> 0001-CASSANDRA-2398-Add-type-specific-compression-to-Abstra.txt,
> 0002-CASSANDRA-2398-Type-specific-compression-for-counters.txt,
> compress-lzf-0.7.0.jar
>
>
> Cassandra has a lot of locations that are ripe for type specific compression.
> A short list:
> Indexes
> * Keys compressed as BytesType, which could default to LZO/LZMA
> * Offsets (delta and varint encoding)
> * Column names added by 2319
> Data
> * Keys, columns, timestamps: see
> http://wiki.apache.org/cassandra/FileFormatDesignDoc
> A basic interface for type specific compression could be as simple as:
> {code:java}
> public void compress(int version, final List<ByteBuffer> from, DataOutput to)
> throws IOException
> public void decompress(int version, DataInput from, List<ByteBuffer> to)
> throws IOException
> public void skip(int version, DataInput from) throws IOException
> {code}
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