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https://issues.apache.org/jira/browse/SPARK-12176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15046162#comment-15046162
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Yuhang Chen commented on SPARK-12176:
-------------------------------------
I modified the descriptions, hope I've made myself clear. Contact me if you
need further information.
> SparkLauncher's setConf() does not support configs containing spaces
> --------------------------------------------------------------------
>
> Key: SPARK-12176
> URL: https://issues.apache.org/jira/browse/SPARK-12176
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.4.0, 1.4.1, 1.5.0, 1.5.1, 1.5.2
> Environment: All
> Reporter: Yuhang Chen
> Priority: Minor
>
> The spark-submit uses '--conf K=V' pattern for setting configs. According to
> the docs, if the 'V' you set has spaces in it, the whole 'K=V' parts should
> be wrapped with quotes.
> However, the SparkLauncher (org.apache.spark.launcher.SparkLauncher) would
> not do that wrapping for you, and there is no chance for wrapping by yourself
> with the API it provides.
> I checked up the source, all confs are stored in a Map before generating
> launching commands. Thus. my advice is checking all values of the conf Map
> and do wrapping during command building.
> For example, I want to add "-XX:+PrintGCDetails -XX:+PrintGCTimeStamps" for
> executors (spark.executor.extraJavaOptions), and the conf contains a space in
> it. For spark-submit, I should wrap the conf with quotes like this:
> --conf "spark.executor.extraJavaOptions=-XX:+PrintGCDetails
> -XX:+PrintGCTimeStamps"
> But when I use the setConf() API of SparkLauncher, I write code like this:
> launcher.setConf("spark.executor.extraJavaOptions", "-XX:+PrintGCDetails
> -XX:+PrintGCTimeStamps"). Now, SparkLauncher uses Java's ProcessBuilder to
> start a sub-process, in which the spark-submit is finally executed. I
> debugged the source, and it turns out the command is like this;
> --conf spark.executor.extraJavaOptions=-XX:+PrintGCDetails
> -XX:+PrintGCTimeStamps
> See? the quotes are gone, and the job counld not be launched with this
> command.
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