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https://issues.apache.org/jira/browse/HIVE-18665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-18665:
---------------------------
    Description: 
SplitLocationProvider removes HDFS locality in LLAP, causing more network 
traffic when reading file formats which aren't currently cached.

In the absence of the IO elevator, cache affinity should be disabled.

This information is encoded into the MapWork in deriveLlapIoDescString, move 
this to an Enum type for comparisons.

  was:
SplitLocationProvider removes HDFS locality in LLAP, causing more network 
traffic when reading file formats which aren't currently cached.

In the absence of the IO elevator, cache affinity should be disabled.


> LLAP: Ignore cache-affinity if the LLAP IO elevator is disabled
> ---------------------------------------------------------------
>
>                 Key: HIVE-18665
>                 URL: https://issues.apache.org/jira/browse/HIVE-18665
>             Project: Hive
>          Issue Type: Bug
>          Components: llap
>    Affects Versions: 3.0.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>            Priority: Major
>
> SplitLocationProvider removes HDFS locality in LLAP, causing more network 
> traffic when reading file formats which aren't currently cached.
> In the absence of the IO elevator, cache affinity should be disabled.
> This information is encoded into the MapWork in deriveLlapIoDescString, move 
> this to an Enum type for comparisons.



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