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https://issues.apache.org/jira/browse/SPARK-2973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14255151#comment-14255151
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Cheng Lian commented on SPARK-2973:
-----------------------------------
How about adding a special {{LocalRDD}} that inherits {{RDD}} but doesn't
trigger any distributed jobs? Essentially it's just a normal {{Seq}} but
behaves like an {{RDD}}. Then we can let {{HiveNativeCommand}} (or
{{NativeCommand}} in branch-1.2) return a {{LocalRDD}} in {{.execute()}}.
> Add a way to show tables without executing a job
> ------------------------------------------------
>
> Key: SPARK-2973
> URL: https://issues.apache.org/jira/browse/SPARK-2973
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Aaron Davidson
> Assignee: Cheng Lian
> Priority: Critical
> Fix For: 1.2.0
>
>
> Right now, sql("show tables").collect() will start a Spark job which shows up
> in the UI. There should be a way to get these without this step.
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