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Posted to issues@impala.apache.org by "Abhishek Rawat (JIRA)" <ji...@apache.org> on 2019/06/04 11:10:00 UTC

[jira] [Created] (IMPALA-8620) Add compression codecs as table/column properties

Abhishek Rawat created IMPALA-8620:
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             Summary: Add compression codecs as table/column properties
                 Key: IMPALA-8620
                 URL: https://issues.apache.org/jira/browse/IMPALA-8620
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Abhishek Rawat
            Assignee: Abhishek Rawat


COMPRESSION_CODEC is supported as a query option.

It probably makes sense to provide a finer granularity control on the scope of compression such as table and/or even columns.

There could also be scenarios where a select few columns (such as variable length strings) could be compressed while others (such as integer family columns) remain uncompressed for performance. Parquet's unit of compression is a page and so it makes sense to provide capability to compress a given column. 



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