Zoltán Borók-Nagy created IMPALA-11238:
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Summary: Avoid the need for COMPUTE STAST for Iceberg tables
Key: IMPALA-11238
URL: https://issues.apache.org/jira/browse/IMPALA-11238
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Reporter: Zoltán Borók-Nagy
We still need to issue COMPUTE STATS for Iceberg tables to do proper planning.
The main reason for it that Iceberg metadata lacks NDV information about
columns at the table level.
There are plans in Iceberg to store HyperLogLog arrays for data files, so once
we have that we could use that information.
Until that maybe we could use some heuristics from Iceberg metadata when there
is no precise NDV available.
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