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https://issues.apache.org/jira/browse/HIVE-24761?focusedWorklogId=585575&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-585575
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ASF GitHub Bot logged work on HIVE-24761:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 20/Apr/21 05:58
Start Date: 20/Apr/21 05:58
Worklog Time Spent: 10m
Work Description: ramesh0201 commented on a change in pull request #2099:
URL: https://github.com/apache/hive/pull/2099#discussion_r616364689
##########
File path:
ql/src/gen/vectorization/ExpressionTemplates/ColumnArithmeticColumn.txt
##########
@@ -34,20 +34,17 @@ public class <ClassName> extends VectorExpression {
private static final long serialVersionUID = 1L;
- private final int colNum1;
private final int colNum2;
Review comment:
It will be better to have the two input columns together in the same
place. But it is a good idea to move this to parent class and share the
assigning code for all subclasses. Can we introduce two subclasses
VectorUnaryExpression and VectorBinaryExpression( or similar name) for
VectorExpression and then extend other classes from either one of these
classes. That way we can also avoid passing -1 from classes that do not use the
inputcolumn
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Issue Time Tracking
-------------------
Worklog Id: (was: 585575)
Time Spent: 50m (was: 40m)
> Vectorization: Support PTF - bounded start windows
> --------------------------------------------------
>
> Key: HIVE-24761
> URL: https://issues.apache.org/jira/browse/HIVE-24761
> Project: Hive
> Issue Type: Sub-task
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> {code}
> notVectorizedReason: PTF operator: *** only UNBOUNDED start frame is
> supported
> {code}
> Currently, bounded windows are not supported in VectorPTFOperator. If we
> simply remove the check compile-time:
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java#L2911
> {code}
> if (!windowFrameDef.isStartUnbounded()) {
> setOperatorIssue(functionName + " only UNBOUNDED start frame is
> supported");
> return false;
> }
> {code}
> We get incorrect results, that's because vectorized codepath completely
> ignores boundaries, and simply iterates through all the input batches in
> [VectorPTFGroupBatches|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/ptf/VectorPTFGroupBatches.java#L172]:
> {code}
> for (VectorPTFEvaluatorBase evaluator : evaluators) {
> evaluator.evaluateGroupBatch(batch);
> if (isLastGroupBatch) {
> evaluator.doLastBatchWork();
> }
> }
> {code}
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