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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-4848) On a stand-alone cluster, several worker-specific variables are read only on the master
Date Mon, 23 Mar 2015 17:36:10 GMT

    [ https://issues.apache.org/jira/browse/SPARK-4848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376239#comment-14376239
] 

Apache Spark commented on SPARK-4848:
-------------------------------------

User 'nkronenfeld' has created a pull request for this issue:
https://github.com/apache/spark/pull/5140

> On a stand-alone cluster, several worker-specific variables are read only on the master
> ---------------------------------------------------------------------------------------
>
>                 Key: SPARK-4848
>                 URL: https://issues.apache.org/jira/browse/SPARK-4848
>             Project: Spark
>          Issue Type: Bug
>          Components: Deploy
>    Affects Versions: 1.0.0
>         Environment: stand-alone spark cluster
>            Reporter: Nathan Kronenfeld
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> On a stand-alone spark cluster, much of the determination of worker specifics, especially
one has multiple instances per node, is done only on the master.
> The master loops over instances, and starts a worker per instance on each node.
> This means, if your workers have different values of SPARK_WORKER_INSTANCES or SPARK_WORKER_WEBUI_PORT
from each other (or from the master), all values are ignored except the one on the master.
> SPARK_WORKER_PORT looks like it is unread in scripts, but read in code - I'm not sure
how it will behave, since all instances will read the same value from the environment.



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