[jira] [Work logged] (HIVE-26365) Remove column statistics collection task from merge statement plan

[ASF GitHub Bot (Jira)]

Title: Message Title

ASF GitHub Bot added a worklog on HIVE-26365   kasakrisz opened a new pull request, #3411: URL: https://github.com/apache/hive/pull/3411 What changes were proposed in this pull request? Disable generating auto column stats collecting pipeline in the execution plan in case of Update/Delete/Merge statements. Why are the changes needed? Column stats are marked stale after executing Update/Delete/Merge statements because it can not be generated from the changed rows in case of delete operation so adding the pipeline into insert branches of a merge does not makes sense. For Update/Delete statements only the way we checking whether adding the pipeline is refactored. Does this PR introduce any user-facing change? No. But output of explain merge statements may changes. How was this patch tested? ``` mvn test -Dtest.output.overwrite -DskipSparkTests -Dtest=TestMiniLlapLocalCliDriver -Dqfile=sqlmerge.q,sqlmerge_stats.q -pl itests/qtest -Pitests ``` Worklog entry: 10m logged by ASF GitHub Bot Change By: ASF GitHub Bot Remaining Estimate: 0h Time Spent: 10m Add Comment   This message was sent by Atlassian Jira (v8.20.10#820010-sha1:ace47f9)