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From Emre Sevinc <emre.sev...@gmail.com>
Subject Re: Can't I mix non-Spark properties into a .properties file and pass it to spark-submit via --properties-file?
Date Mon, 16 Feb 2015 15:38:21 GMT
Sean,

I'm trying this as an alternative to what I currently do. Currently I have
my module.properties file for my module in the resources directory, and
that file is put inside the über JAR file when I build my application with
Maven, and then when I submit it using spark-submit, I can read that
module.properties file via the traditional method:


properties.load(MyModule.class.getClassLoader().getResourceAsStream("module.properties"));

and everything works fine. The disadvantage is that in order to make any
changes to that .properties file effective, I have to re-build my
application. Therefore I'm trying to find a way to be able to send that
module.properties file via spark-submit and read the values in iy, so that
I will not be forced to build my application every time I want to make a
change in the module.properties file.

I've also checked the "--files" option of spark-submit, but I see that it
is for sending the listed files to executors (correct me if I'm wrong),
what I'm after is being able to pass dynamic properties (key/value pairs)
to the Driver program of my Spark application. And I still could not find
out how to do that.

--
Emre





On Mon, Feb 16, 2015 at 4:28 PM, Sean Owen <sowen@cloudera.com> wrote:

> Since SparkConf is only for Spark properties, I think it will in
> general only pay attention to and preserve "spark.*" properties. You
> could experiment with that. In general I wouldn't rely on Spark
> mechanisms for your configuration, and you can use any config
> mechanism you like to retain your own properties.
>
> On Mon, Feb 16, 2015 at 3:26 PM, Emre Sevinc <emre.sevinc@gmail.com>
> wrote:
> > Hello,
> >
> > I'm using Spark 1.2.1 and have a module.properties file, and in it I have
> > non-Spark properties, as well as Spark properties, e.g.:
> >
> >    job.output.dir=file:///home/emre/data/mymodule/out
> >
> > I'm trying to pass it to spark-submit via:
> >
> >    spark-submit --class com.myModule --master local[4] --deploy-mode
> client
> > --verbose --properties-file /home/emre/data/mymodule.properties
> mymodule.jar
> >
> > And I thought I could read the value of my non-Spark property, namely,
> > job.output.dir by using:
> >
> >     SparkConf sparkConf = new SparkConf();
> >     final String validatedJSONoutputDir =
> sparkConf.get("job.output.dir");
> >
> > But it gives me an exception:
> >
> >     Exception in thread "main" java.util.NoSuchElementException:
> > job.output.dir
> >
> > Is it not possible to mix Spark and non-Spark properties in a single
> > .properties file, then pass it via --properties-file and then get the
> values
> > of those non-Spark properties via SparkConf?
> >
> > Or is there another object / method to retrieve the values for those
> > non-Spark properties?
> >
> >
> > --
> > Emre Sevinç
>



-- 
Emre Sevinc

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