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AKB
New Contributor
Posts: 9
Registered: ‎04-11-2018
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How to use compression with Kudu tables?

Looking for documentation. Using Impala on Kudu at the moment.

 

Found https://kudu.apache.org/docs/schema_design.html , says Kudu allows compression on a column level. How about if I wanted table level?

 

Thanks.

Cloudera Employee
Posts: 15
Registered: ‎09-28-2015

Re: How to use compression with Kudu tables?

Hi AKB, there's no table-level compression.  The closest equivalent would be specifying compression for all columns.  It's pretty typical to rely on encodings to reduce size as much as possible, and then additionally apply compression only for particularly big or cold columns.

AKB
New Contributor
Posts: 9
Registered: ‎04-11-2018

Re: How to use compression with Kudu tables?

Can you please direct me to some docs that say how to set encodings and how to declare column level compression? I am not able to find this. Thanks.

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Cloudera Employee
Posts: 15
Registered: ‎09-28-2015

Re: How to use compression with Kudu tables?

Hi AKB,

 

Assuming you're asking about Impala, you can find the exact syntax for creating tables with compressed/encoded columns in the CREATE TABLE reference, and the syntax for altering tables to add compression/encodings in the ALTER TABLE reference.

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