Navis created SPARK-8312:
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Summary: Populate statistics info of hive tables if it's needed to
be
Key: SPARK-8312
URL: https://issues.apache.org/jira/browse/SPARK-8312
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Navis
Priority: Minor
Currently, spark-sql uses stats in metastore for estimating size of hive table,
which means analyze command should be executed before accessing the table for
better planning especially for joins. But still with the stats, it cannot
reflect real input size of the query when partition prunning predicate exists
in it.
Even worse is that hive cannot update megastore stats for external tables,
which is fixed recently in HIVE-6727. The issue detail says the bug is applied
to all hive version between 0.13.0 and 1.2.0
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