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https://issues.apache.org/jira/browse/SPARK-2220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14191841#comment-14191841
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Cheng Lian commented on SPARK-2220:
-----------------------------------
It turned out that {{ShellCommand}} and {{SourceCommand}} are wrongly
interpreted in Spark SQL previously. These two classes correspond to the {{\!}}
and {{SOURCE}} syntaxes respectively in Spark SQL. However, back in Hive,
{{\!}} is interpreted in different ways by Hive CLI and Beeline, and {{SOURCE}}
is only supported by Hive CLI.
For {{\!}}, in Hive CLI, {{\!}} starts a shell command (e.g. {{\!ls;}} and
{{\!cat foo;}}), while in Beeline {{\!}} starts a Beeline command (e.g.
{{\!connect jdbc:hive://localhost:10000}} and {{\!run script.sql}}). And the
{{SOURCE file}} command in Hive CLI is equivalent to the {{\!run file}} command
in Beeline.
In a word, functionalities of these two commands should not be implemented in
{{sql/core}} and/or {{sql/hive}}, but are already implemented as part of Spark
SQL CLI and Hive Beeline.
> Fix remaining Hive Commands
> ---------------------------
>
> Key: SPARK-2220
> URL: https://issues.apache.org/jira/browse/SPARK-2220
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Michael Armbrust
> Assignee: Cheng Lian
>
> None of the following have an execution plan:
> {code}
> private[hive] case class ShellCommand(cmd: String) extends Command
> private[hive] case class SourceCommand(filePath: String) extends Command
> private[hive] case class AddFile(filePath: String) extends Command
> {code}
> dfs is being fixed in a related PR.
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