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Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2015/06/27 20:06:05 UTC

[jira] [Created] (SPARK-8680) PropagateTypes is very slow when there are lots of columns

Davies Liu created SPARK-8680:
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             Summary: PropagateTypes is very slow when there are lots of columns
                 Key: SPARK-8680
                 URL: https://issues.apache.org/jira/browse/SPARK-8680
             Project: Spark
          Issue Type: Bug
    Affects Versions: 1.4.0, 1.3.1
            Reporter: Davies Liu


The time for PropagateTypes is O(N*N), N is the number of columns, which is very slow if there many columns (>1000)



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