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https://issues.apache.org/jira/browse/HIVE-25615?focusedWorklogId=696251&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-696251
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ASF GitHub Bot logged work on HIVE-25615:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Dec/21 00:12
Start Date: 15/Dec/21 00:12
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #2723:
URL: https://github.com/apache/hive/pull/2723#issuecomment-994158113
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the d...@hive.apache.org list if the patch is in
need of reviews.
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Issue Time Tracking
-------------------
Worklog Id: (was: 696251)
Remaining Estimate: 0h
Time Spent: 10m
> Hive on tez will generate at least one MapContainer per 0 length file
> ---------------------------------------------------------------------
>
> Key: HIVE-25615
> URL: https://issues.apache.org/jira/browse/HIVE-25615
> Project: Hive
> Issue Type: Bug
> Components: Query Planning, Query Processor, Tez
> Affects Versions: 3.1.2
> Environment: hive-3.1.2
> tez-0.10.1
> Reporter: JackYan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When tez read a table with many partitions and those partitions contain 0
> length file only, ColumnarSplitSizeEstimator will return Integer.MAX_VALUE
> bytes length for every 0 length file.Then,TezSplitGrouper will treat those
> files as big files,and generate at least one MapContainer per 0 file to
> handle it.This is incorrect and even wasteful.
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