[
https://issues.apache.org/jira/browse/HIVE-24761?focusedWorklogId=601247&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-601247
]
ASF GitHub Bot logged work on HIVE-24761:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 24/May/21 15:56
Start Date: 24/May/21 15:56
Worklog Time Spent: 10m
Work Description: ramesh0201 commented on pull request #2099:
URL: https://github.com/apache/hive/pull/2099#issuecomment-847144409
+1 looks good to me
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
Issue Time Tracking
-------------------
Worklog Id: (was: 601247)
Time Spent: 3.5h (was: 3h 20m)
> 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: 3.5h
> 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}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
