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From "Xuan Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1303) Allow multiple commands separating with ";" in distributed-shell
Date Thu, 21 Nov 2013 03:39:37 GMT

    [ https://issues.apache.org/jira/browse/YARN-1303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13828462#comment-13828462
] 

Xuan Gong commented on YARN-1303:
---------------------------------

Did the test on a single node cluster :
Using the command : 
{code}
hadoop-3.0.0-SNAPSHOT/bin/hadoop jar hadoop-yarn-project-3.0.0-SNAPSHOT/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.0.0-SNAPSHOT.jar
org.apache.hadoop.yarn.applications.distributedshell.Client --jar hadoop-yarn-project-3.0.0-SNAPSHOT/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.0.0-SNAPSHOT.jar
--shell_command "ls|ps" --num_containers 2
{code}

And From launch_container.sh of Container :
{code}
exec /bin/bash -c "ls|ps  1>/Users/xuan/dep/hadoop-3.0.0-SNAPSHOT/logs/application_1385002853820_0002/container_1385002853820_0002_01_000003/stdout
2>/Users/xuan/dep/hadoop-3.0.0-SNAPSHOT/logs/application_1385002853820_0002/container_1385002853820_0002_01_000003/stderr
"
{code}



> Allow multiple commands separating with ";" in distributed-shell
> ----------------------------------------------------------------
>
>                 Key: YARN-1303
>                 URL: https://issues.apache.org/jira/browse/YARN-1303
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: applications/distributed-shell
>            Reporter: Tassapol Athiapinya
>            Assignee: Xuan Gong
>         Attachments: YARN-1303.1.patch, YARN-1303.2.patch, YARN-1303.3.patch, YARN-1303.3.patch,
YARN-1303.4.patch, YARN-1303.4.patch, YARN-1303.5.patch, YARN-1303.6.patch, YARN-1303.7.patch,
YARN-1303.8.1.patch, YARN-1303.8.2.patch, YARN-1303.8.patch, YARN-1303.9.patch
>
>
> In shell, we can do "ls; ls" to run 2 commands at once. 
> In distributed shell, this is not working. We should improve to allow this to occur.
There are practical use cases that I know of to run multiple commands or to set environment
variables before a command.



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