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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-20338) LLAP: Force synthetic file-id for filesystems which have HDFS protocol impls with POSIX mutation semantics
Date Mon, 13 Aug 2018 19:21:00 GMT

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

Gopal V updated HIVE-20338:
---------------------------
    Description: 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).  (was: 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. )

> 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
>         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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