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From "Chinna Rao Lalam (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13217) Replication for HoS mapjoin small file needs to respect dfs.replication.max
Date Fri, 18 Mar 2016 05:29:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chinna Rao Lalam updated HIVE-13217:
------------------------------------
    Status: Patch Available  (was: Open)

> Replication for HoS mapjoin small file needs to respect dfs.replication.max
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-13217
>                 URL: https://issues.apache.org/jira/browse/HIVE-13217
>             Project: Hive
>          Issue Type: Bug
>          Components: Spark
>    Affects Versions: 2.0.0, 1.2.1
>            Reporter: Szehon Ho
>            Assignee: Chinna Rao Lalam
>            Priority: Minor
>         Attachments: HIVE-13217.1.patch, HIVE-13217.2.patch
>
>
> Currently Hive on Spark Mapjoin replicates small table file to a hard-coded value of
10.  See SparkHashTableSinkOperator.MIN_REPLICATION. 
> When dfs.replication.max is less than 10, HoS query fails.  This constant should cap
at dfs.replication.max.
> Normally dfs.replication.max seems set at 512.



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