[Impala-ASF-CR] IMPALA-1430,IMPALA-4878,IMPALA-4879: codegen native UDAs

["Tim Armstrong (Code Review)" <ge...@cloudera.org>]

Hello Michael Ho,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/5161

to look at the new patch set (#14).

Change subject: IMPALA-1430,IMPALA-4878,IMPALA-4879: codegen native UDAs
......................................................................

IMPALA-1430,IMPALA-4878,IMPALA-4879: codegen native UDAs

This uses the existing infrastructure for codegening builtin UDAs and
for codegening calls to UDFs. GetUdf() is refactored to support both
UDFs and UDAs.

IR UDAs are still not allowed by the frontend. It's unclear if we want
to enable them going forward because of the difficulties in testing and
supporting IR UDFs/UDAs.

This also fixes some bugs with the Get*Type() methods of
FunctionContext. GetArgType() and related methods now always return the
logical input types of the aggregate function. Getting the tests to pass
required fixing IMPALA-4878 because they called GetIntermediateType().

Testing:
test_udfs.py tests UDAs with codegen enabled and disabled.

Added some asserts to the test UDAs to check that the correct types are
passed in via the FunctionContext.

Change-Id: Id1708eaa96eb76fb9bec5eeabf209f81c88eec2f
---
M be/src/codegen/codegen-anyval.cc
M be/src/codegen/codegen-anyval.h
M be/src/codegen/llvm-codegen.cc
M be/src/codegen/llvm-codegen.h
M be/src/exec/partitioned-aggregation-node.cc
M be/src/exprs/agg-fn-evaluator.cc
M be/src/exprs/agg-fn-evaluator.h
M be/src/exprs/anyval-util.cc
M be/src/exprs/anyval-util.h
M be/src/exprs/expr.cc
M be/src/exprs/expr.h
M be/src/exprs/scalar-fn-call.cc
M be/src/exprs/scalar-fn-call.h
M be/src/exprs/timestamp-functions.cc
M be/src/testutil/test-udas.cc
M be/src/testutil/test-udas.h
M be/src/udf/udf-internal.h
M be/src/udf/udf-ir.cc
M be/src/udf/udf.h
M testdata/workloads/functional-query/queries/QueryTest/uda.test
M tests/query_test/test_udfs.py
21 files changed, 368 insertions(+), 231 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/61/5161/14
-- 
To view, visit http://gerrit.cloudera.org:8080/5161
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Id1708eaa96eb76fb9bec5eeabf209f81c88eec2f
Gerrit-PatchSet: 14
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dh...@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <ma...@cloudera.com>
Gerrit-Reviewer: Michael Ho
Gerrit-Reviewer: Michael Ho <kw...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <ta...@cloudera.com>