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https://issues.apache.org/jira/browse/IMPALA-10071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltán Borók-Nagy resolved IMPALA-10071.
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Resolution: Fixed
> Impala shouldn't create filename starting with underscore during TRUNCATE
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>
> Key: IMPALA-10071
> URL: https://issues.apache.org/jira/browse/IMPALA-10071
> Project: IMPALA
> Issue Type: Bug
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Major
>
> When Impala TRUNCATEs an ACID table, it creates a new base directory with the
> hidden file "_empty" in it.
> Newer Hive versions ignore files starting with underscore, therefore they
> ignore the whole base directory.
> To resolve this issue we can simply rename the empty file to "empty".
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