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https://issues.apache.org/jira/browse/HIVE-10238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905885#comment-14905885
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Lefty Leverenz commented on HIVE-10238:
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Another one for the errata.txt file (see HIVE-11704 and HIVE-11876): the
commit called this HIVE-10328 instead of 10238, transposing the 2 and 3.
It's commit b98a60df2f3779acf82d94965d11ed951b618fad.
> Loop optimization for SIMD in IfExprColumnColumn.txt
> ----------------------------------------------------
>
> Key: HIVE-10238
> URL: https://issues.apache.org/jira/browse/HIVE-10238
> Project: Hive
> Issue Type: Sub-task
> Components: Vectorization
> Affects Versions: 1.1.0
> Reporter: Chengxiang Li
> Assignee: Teddy Choi
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HIVE-10238.2.patch, HIVE-10238.3.patch, HIVE-10238.patch
>
>
> The ?: operator as following could not be vectorized in loop, we may transfer
> it into mathematical expression.
> {code:java}
> for(int j = 0; j != n; j++) {
> int i = sel[j];
> outputVector[i] = (vector1[i] == 1 ? vector2[i] : vector3[i]);
> outputIsNull[i] = (vector1[i] == 1 ?
> arg2ColVector.isNull[i] : arg3ColVector.isNull[i]);
> }
> {code}
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