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https://issues.apache.org/jira/browse/HIVE-20338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16578782#comment-16578782
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Sergey Shelukhin commented on HIVE-20338:
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[~gopalv] doesn't inode id guarantee immutability? I remember discussing with
someone that it would change on append.
> LLAP: Force synthetic file-id for filesystems which have HDFS protocol impls
> with POSIX mutation semantics
> ----------------------------------------------------------------------------------------------------------
>
> Key: HIVE-20338
> URL: https://issues.apache.org/jira/browse/HIVE-20338
> Project: Hive
> Issue Type: Bug
> Reporter: Gopal V
> Priority: Major
>
> HDFS protocol does not guarantee immutability of files - the synthetic
> file-id includes the mtime of the file as well, which is a fail-safe for such
> filesystems.
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