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From "liyunzhang_intel (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-15259) The deserialization time of HOS20 is longer than what in HOS16
Date Tue, 22 Nov 2016 08:11:59 GMT
liyunzhang_intel created HIVE-15259:
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             Summary: The deserialization time of HOS20 is longer than what in  HOS16
                 Key: HIVE-15259
                 URL: https://issues.apache.org/jira/browse/HIVE-15259
             Project: Hive
          Issue Type: Improvement
            Reporter: liyunzhang_intel


deploy Hive on Spark on spark 1.6 version and spark 2.0 version.
run query and in latest code(with spark2.0) the deserialization time of a task is 4 sec while
the deserialization time of spark1.6 is 1 sec. The detail is in attached picture.



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