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From "Reynold Xin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-9518) Clean up GenerateUnsafeRowJoiner
Date Sat, 01 Aug 2015 02:36:04 GMT
Reynold Xin created SPARK-9518:
----------------------------------

             Summary: Clean up GenerateUnsafeRowJoiner
                 Key: SPARK-9518
                 URL: https://issues.apache.org/jira/browse/SPARK-9518
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
            Reporter: Reynold Xin


[~davies]'s suggestion on how to rewrite it to be more clear:

{code}
Seq.tabulate(outputBitsetWords) { i => 
  val bitset = if (i< bitset1Words) {
    getLong(obj1, i * 8)
  } else if (i == bitset1Words && bitset1Remainder > 0) {
    getLong(obj1, i* 8) | getLong(obj2, 0) >>> bitset1Remainder
  } else {
    getLong(obj2, i - bitset1Words) <<< bitset1Remainder | getLong(obj2 i - bitset1Words
+ 1) >>> bitset1Remainder
  }
  putLong(buf, i * 8, bitset)
}
{code}



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