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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2018/02/09 21:37:00 UTC
[jira] [Commented] (HIVE-18665) LLAP: Ignore cache-affinity if the
LLAP IO elevator is disabled
[ https://issues.apache.org/jira/browse/HIVE-18665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16359005#comment-16359005 ]
Sergey Shelukhin commented on HIVE-18665:
-----------------------------------------
Why is some inputs false? +1 otherwise pending tests
> 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
> Attachments: HIVE-18665.1.patch
>
>
> 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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