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https://issues.apache.org/jira/browse/HIVE-25967?focusedWorklogId=753252&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-753252
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ASF GitHub Bot logged work on HIVE-25967:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Apr/22 08:36
Start Date: 06/Apr/22 08:36
Worklog Time Spent: 10m
Work Description: szlta merged PR #3178:
URL: https://github.com/apache/hive/pull/3178
Issue Time Tracking
-------------------
Worklog Id: (was: 753252)
Time Spent: 1h (was: 50m)
> Prevent residual expressions from getting serialized in Iceberg splits
> ----------------------------------------------------------------------
>
> Key: HIVE-25967
> URL: https://issues.apache.org/jira/browse/HIVE-25967
> Project: Hive
> Issue Type: Bug
> Reporter: Ádám Szita
> Assignee: Ádám Szita
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> This hack removes residual expressions from the file scan task just before
> split serialization.
> Residuals can sometime take up too much space in the payload causing Tez AM
> to OOM.
> Unfortunately Tez AM doesn't distribute splits in a streamed way, that is, it
> serializes all splits for a job before sending them out to executors. Some
> residuals may take ~ 1 MB in memory, multiplied with thousands of split could
> kill the Tez AM JVM.
> Until the streamed split distribution is implemented we will kick residuals
> out of the split.
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