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Posted to issues@spark.apache.org by "Yuming Wang (JIRA)" <ji...@apache.org> on 2019/05/08 04:42:00 UTC

[jira] [Created] (SPARK-27655) Persistent the table statistics to metadata after fall back to hdfs

Yuming Wang created SPARK-27655:
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             Summary: Persistent the table statistics to metadata after fall back to hdfs
                 Key: SPARK-27655
                 URL: https://issues.apache.org/jira/browse/SPARK-27655
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Yuming Wang


It's a real case. We need to join many times from different tables, but the statistics of some tables are incorrect. So this job need 43 min,  It only need 3.7min after set {{spark.sql.statistics.persistentStatsAfterFallBack=true}}.



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