Mujtaba Chohan created PHOENIX-3559:
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Summary: More disk space used with encoded column scheme with data
in sparse columns
Key: PHOENIX-3559
URL: https://issues.apache.org/jira/browse/PHOENIX-3559
Project: Phoenix
Issue Type: Sub-task
Reporter: Mujtaba Chohan
Schema with 5K columns
{noformat}
create table (k1 integer, k2 integer, c1 varchar ... c5000 varchar CONSTRAINT
PK PRIMARY KEY (K1, K2))
VERSIONS=1, MULTI_TENANT=true, IMMUTABLE_ROWS=true
{noformat}
In this schema, only 100 random columns are filled with random 15 chars. Rest
are nulls.
Data size is *6X* larger with encoded columns scheme compare to non-encoded.
That is 12GB/1M rows encoded vs ~2GB/1M rows non-encoded.
When compressed GZ, size with encoded column scheme is still 35% higher.
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