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4915ea4ac9
This affects java UDFs. Previously it was possible that the length of
the string returned from a java udf didn't match the actual data. Per the
Text.getBytes() documentation "... only data up to getLength() is
valid.". Impala just needs to use copyBytes() which is a convenience
function for this situation. The same should be done for BytesWritable.
Before:
Query: select length(echo('12345678901234567890'))
+-------------------------------------------+
| length(java.echo('12345678901234567890')) |
+-------------------------------------------+
| 22 |
+-------------------------------------------+
After:
Query: select length(echo('12345678901234567890'))
+-------------------------------------------------+
| length(functional.echo('12345678901234567890')) |
+-------------------------------------------------+
| 20 |
+-------------------------------------------------+
Change-Id: If9671278df8abf7529d3bc470c5f9d037ac3da1b
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4897
Reviewed-by: Casey Ching <casey@cloudera.com>
Tested-by: jenkins