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https://issues.apache.org/jira/browse/HIVE-24866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran reassigned HIVE-24866:
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> FileNotFoundException during alter table concat
> -----------------------------------------------
>
> Key: HIVE-24866
> URL: https://issues.apache.org/jira/browse/HIVE-24866
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.4.0, 3.2.0, 4.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
>
> Because of the way combinefile IF groups files based on node and rack
> locality, there are cases where single big orc file gets spread across 2 or
> more combine hive split. When first task completes, as part of jobCloseOp the
> source orc file of concatenation is moved/renamed which can lead to
> FileNotFoundException in subsequent mappers that has partial split of that
> file.
> A simple fix would be for the mapper with start of the split to own the
> entire orc file for concatenation. If a mapper gets partial split which is
> not the start then it can skip the entire file.
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