Tim Armstrong has submitted this change and it was merged.

Change subject: IMPALA-4711: clarify is_null semantics in udf.h
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IMPALA-4711: clarify is_null semantics in udf.h

This is to reduce the chance of confusion about what the UDF interface
guarantees. E.g. I've seen users post code that assumes that the len
field of a NULL StringVal is 0, which we do not guarantee.

Change-Id: I2b3fe0b3e57f055682fa93a4ea3c20490058450b
Reviewed-on: http://gerrit.cloudera.org:8080/6311
Tested-by: Impala Public Jenkins
Reviewed-by: Tim Armstrong <[email protected]>
---
M be/src/udf/udf.h
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  Impala Public Jenkins: Verified
  Tim Armstrong: Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: I2b3fe0b3e57f055682fa93a4ea3c20490058450b
Gerrit-PatchSet: 3
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>

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