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  1. Hive
  2. HIVE-11506

Casting varchar/char type to string cannot be vectorized

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Details

    • Improvement
    • Status: Closed
    • Trivial
    • Resolution: Fixed
    • None
    • 2.0.0
    • Vectorization
    • None

    Description

      It's not defined in vectorization context.

      explain 
      select cast(cast(cstring1 as varchar(10)) as string) x from alltypesorc order by x;
      

      Mapper is not vectorized by exception,

      015-08-10 17:02:08,003 INFO  [main]: physical.Vectorizer (Vectorizer.java:validateExprNodeDesc(1299)) - Failed to vectorize
      org.apache.hadoop.hive.ql.metadata.HiveException: Unhandled cast input type: varchar(10)
              at org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getCastToString(VectorizationContext.java:1543)
              at org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getGenericUDFBridgeVectorExpression(VectorizationContext.java:1379)
              at org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getGenericUdfVectorExpression(VectorizationContext.java:1177)
              at org.apache.hadoop.hive.ql.exec.vector.VectorizationContext.getVectorExpression(VectorizationContext.java:440)
              at org.apache.hadoop.hive.ql.optimizer.physical.Vectorizer.validateExprNodeDesc(Vectorizer.java:1293)
              at org.apache.hadoop.hive.ql.optimizer.physical.Vectorizer.validateExprNodeDesc(Vectorizer.java:1284)
              at org.apache.hadoop.hive.ql.optimizer.physical.Vectorizer.validateSelectOperator(Vectorizer.java:1116)
              at org.apache.hadoop.hive.ql.optimizer.physical.Vectorizer.validateMapWorkOperator(Vectorizer.java:906)
      

      Attachments

        1. HIVE-11506.2.patch.txt
          77 kB
          Navis Ryu
        2. HIVE-11506.1.patch.txt
          74 kB
          Navis Ryu

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              navis Navis Ryu
              navis Navis Ryu
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              Dates

                Created:
                Updated:
                Resolved: