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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2018/08/16 20:28:00 UTC

[jira] [Assigned] (HIVE-20338) LLAP: Force synthetic file-id for filesystems which have HDFS protocol impls with POSIX mutation semantics

     [ https://issues.apache.org/jira/browse/HIVE-20338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Shelukhin reassigned HIVE-20338:
---------------------------------------

    Assignee: Sergey Shelukhin

> 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
>            Assignee: Sergey Shelukhin
>            Priority: Major
>         Attachments: HIVE-20338.WIP.patch
>
>
> HDFS client protocol is not a guarantee of the immutability of files - the synthetic file-id includes the mtime of the file as well, which is a fail-safe for filesystems which implement the client wire protocol without offering the same storage side restrictions on immutability (i.e allow NFS read-write-modify on the backend).



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