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From "David Phillips (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12753) Improve performance of LazyBinaryColumnarSerDe for Text strings
Date Tue, 29 Dec 2015 00:15:49 GMT
David Phillips created HIVE-12753:
-------------------------------------

             Summary: Improve performance of LazyBinaryColumnarSerDe for Text strings
                 Key: HIVE-12753
                 URL: https://issues.apache.org/jira/browse/HIVE-12753
             Project: Hive
          Issue Type: Bug
          Components: Serializers/Deserializers
    Affects Versions: 1.2.1
            Reporter: David Phillips


{{LazyBinaryColumnarSerDe}} needs to special case writing empty strings, but it does so by
calling {{getPrimitiveJavaObject()}} rather than {{getPrimitiveWritableObject()}} on {{StringObjectInspector}}.
If the object is {{Text}}, then this requires a conversion to a Java {{String}} just to get
the length.

Unfortunately, the best method to call depends on the object type (or the object inspector
type). One solution is to call {{getPrimitiveWritableObject()}} if the object is an instance
of {{Text}} or {{BytesWritable}}.



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