Configuring compression

Steps for configuring compression.

You configure a table property and subproperties to manage compression. CQL table properties describes the available options for compression. Compression is enabled by default.

Procedure

Disable compression, using CQL to set the compression parameter enabled to false.

CREATE TABLE DogTypes (
              block_id uuid,
              species text,
              alias text,
              population varint,
              PRIMARY KEY (block_id)
            )
            WITH compression = { 'enabled' : false };

Enable compression on an existing table, using ALTER TABLE to set the compression algorithm class to LZ4Compressor, SnappyCompressor, or DeflateCompressor.
```
ALTER TABLE DogTypes 
   WITH compression = { 'class' : 'LZ4Compressor' };
```
Change compression on an existing table, using ALTER TABLE and setting the compression algorithm class to DeflateCompressor.
```
ALTER TABLE CatTypes
  WITH compression = { 'class' : 'DeflateCompressor', 'chunk_length_in_kb' : 64 }
```
Tune data compression on a per-table basis using CQL to alter a table.