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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-8219) Multi-Insert optimization, don't sink the source into a file [Spark Branch]
Date Mon, 22 Sep 2014 20:21:34 GMT

     [ https://issues.apache.org/jira/browse/HIVE-8219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xuefu Zhang updated HIVE-8219:
------------------------------
    Issue Type: Improvement  (was: Bug)

> Multi-Insert optimization, don't sink the source into a file [Spark Branch]
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-8219
>                 URL: https://issues.apache.org/jira/browse/HIVE-8219
>             Project: Hive
>          Issue Type: Improvement
>          Components: Spark
>            Reporter: Xuefu Zhang
>              Labels: Spark-M1
>
> Current implementation split the operator plan at the lowest common ancester by inserting
one FileSinkOperator and a list of TableScanOperators. Writing to a file (by the FS) is expensive.
We should be able to insert a ReduceSinkOperator instead. The result RDD from the first job
can be cached and refereed in subsequent Spark jobs.
> This is a followup for HIVE-7503.



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