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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-10658) Could pyspark provide addJars() as scala spark API?
Date Tue, 27 Oct 2015 22:52:27 GMT

     [ https://issues.apache.org/jira/browse/SPARK-10658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-10658:
------------------------------------

    Assignee:     (was: Apache Spark)

> Could pyspark provide addJars() as scala spark API? 
> ----------------------------------------------------
>
>                 Key: SPARK-10658
>                 URL: https://issues.apache.org/jira/browse/SPARK-10658
>             Project: Spark
>          Issue Type: Wish
>          Components: PySpark
>    Affects Versions: 1.3.1
>         Environment: Linux ubuntu 14.01 LTS
>            Reporter: ryanchou
>              Labels: features
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> My spark program was written by pyspark API , and it has used the spark-csv jar library.

> I could submit the task by spark-submit, and add `--jars` arguments for using spark-csv
jar library as following commands:
> ```
> /bin/spark-submit --jars /path/spark-csv_2.10-1.1.0.jar  xxx.py
> ```
> However I need to run my unittests like:
> ```
> py.test -vvs test_xxx.py
> ```
> It could't add jars by adding '--jars' arugment.
> Therefore I tried to use the SparkContext.addPyFile() API to add jars in my test_xxx.py.

> Because I saw the addPyFile()'s doc mention me PACKAGES_EXTENSIONS = (.zip, .py, .jar).

> Does it mean that I could add *.jar (jar libraries) by using the addPyFile()?
> The codes which using addPyFile() to add jars as below: 
> ```
> self.sc.addPyFile(join(lib_path, "spark-csv_2.10-1.1.0.jar"))
> sqlContext = SQLContext(self.sc)
> self.dataframe = sqlContext.load(
>                                 source="com.databricks.spark.csv",
>                                 header="true",
>                                 path="xxx.csv"
>                             )
> ```
> While it doesn't work. sqlContext cannot load the source(com.databricks.spark.csv)
> Eventually I have found another way to set the enviroment variable SPARK_CLASSPATH for
loading jars libraries
> ```
> SPARK_CLASSPATH="/path/xxx.jar:/path/xxx2.jar" py.test -vvs test_xxx.py
> ```
> It could load the jars libraries and sqlContext could load source succeed as well as
adding `--jar xxx1.jar` arguments
> For the situation on using third party jars (.py & .egg could work well by using
addPyFile()) in pyspark-written scripts.
> and it cannot use `--jars` on the situation (py.test -vvs test_xxx.py).
> Have you ever planed to provide an API such as addJars() in scala for adding jars to
spark program, or was there a better way to add jars I still havent found it yet?
> If someone want to addjars() in pyspark-written scripts not using '--jars'. 
> Could you give us some suggestions on it?



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