[jira] [Created] (IMPALA-10914) Iceberg query create inconsistent scan ranges between consecutive runs

["Riza Suminto (Jira)" <ji...@apache.org>]

Riza Suminto created IMPALA-10914:
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             Summary: Iceberg query create inconsistent scan ranges between consecutive runs
                 Key: IMPALA-10914
                 URL: https://issues.apache.org/jira/browse/IMPALA-10914
             Project: IMPALA
          Issue Type: Bug
          Components: Distributed Exec
    Affects Versions: Impala 4.0.0
            Reporter: Riza Suminto
            Assignee: Zoltán Borók-Nagy


When running a same query several times against hive table, scan ranges assignment between query runs are identical. This helps towards efficiently hitting already cached file handles and data.

However, for iceberg table query, consecutive runs of the same query yield varying scan range assignment. This lead to more cache miss and slower scans.

 



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