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From "Michael Ho (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-5307: Part 2: copy out strings in uncompressed Avro
Date Tue, 24 Oct 2017 00:10:55 GMT
Michael Ho has posted comments on this change. ( http://gerrit.cloudera.org:8080/8146 )

Change subject: IMPALA-5307: Part 2: copy out strings in uncompressed Avro
......................................................................


Patch Set 11:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/8146/11/be/src/runtime/tuple.cc
File be/src/runtime/tuple.cc:

http://gerrit.cloudera.org:8080/#/c/8146/11/be/src/runtime/tuple.cc@449
PS11, Line 449:   Value* result_val = builder.CreateCall(cross_compiled_fn,
> I confirmed that it was unrolled for a handful of string columns. For 100s 
It's probably because of the inlining overhead. I wonder what the perf is like if we force
inlining and let the unroll to occur for your 100 columns example



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: If1fc78790d778c874f5aafa5958c3c045a88d233
Gerrit-Change-Number: 8146
Gerrit-PatchSet: 11
Gerrit-Owner: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-Reviewer: Michael Ho <kwho@cloudera.com>
Gerrit-Reviewer: Thomas Tauber-Marshall <tmarshall@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-Comment-Date: Tue, 24 Oct 2017 00:10:55 +0000
Gerrit-HasComments: Yes

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