Gergely Fürnstáhl created IMPALA-11577:
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Summary: Optimize getting stored file types for Iceberg tables
Key: IMPALA-11577
URL: https://issues.apache.org/jira/browse/IMPALA-11577
Project: IMPALA
Issue Type: Improvement
Reporter: Gergely Fürnstáhl
Impala supports mixed file formats for Iceberg tables, which means every file
can have different file format and it uses the set of existing file formats for
planning purposes. Currently Impala goes through all file's metadata to
aggregate this information, which can be slow if there are lots of data files.
We could optimized this by storing this aggregated information somewhere (e.g.
in Iceberg - yet to be implemented -
https://github.com/apache/iceberg/blob/master/core/src/main/java/org/apache/iceberg/SnapshotSummary.java)
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