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https://issues.apache.org/jira/browse/SPARK-7819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572226#comment-14572226
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Nathan McCarthy commented on SPARK-7819:
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Has anyone tried this with spark-submit? It works in the shell but it fails
with a compiled app...
{code}
val conf = new SparkConf().set("spark.sql.hive.metastore.sharedPrefixes",
"com.mysql.jdbc,org.postgresql,com.microsoft.sqlserver,oracle.jdbc,com.mapr.fs.shim.LibraryLoader,com.mapr.security.JNISecurity,com.mapr.fs.jni")
//spark HC mapr4 workaround
val sc = new SparkContext(conf)
val hc = new HiveContext(sc)
println(" Res = " + hc.sql("select pw_end_date from pz.sample_dates").count())
{code}
@Fi - have you tried with spark-submit?
> Isolated Hive Client Loader appears to cause Native Library
> libMapRClient.4.0.2-mapr.so already loaded in another classloader error
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-7819
> URL: https://issues.apache.org/jira/browse/SPARK-7819
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.4.0
> Reporter: Fi
> Priority: Critical
> Attachments: invalidClassException.log, stacktrace.txt, test.py
>
>
> In reference to the pull request: https://github.com/apache/spark/pull/5876
> I have been running the Spark 1.3 branch for some time with no major hiccups,
> and recently switched to the Spark 1.4 branch.
> I build my spark distribution with the following build command:
> {noformat}
> make-distribution.sh --tgz --skip-java-test --with-tachyon -Phive
> -Phive-0.13.1 -Pmapr4 -Pspark-ganglia-lgpl -Pkinesis-asl -Phive-thriftserver
> {noformat}
> When running a python script containing a series of smoke tests I use to
> validate the build, I encountered an error under the following conditions:
> * start a spark context
> * start a hive context
> * run any hive query
> * stop the spark context
> * start a second spark context
> * run any hive query
> ** ERROR
> From what I can tell, the Isolated Class Loader is hitting a MapR class that
> is loading its native library (presumedly as part of a static initializer).
> Unfortunately, the JVM prohibits this the second time around.
> I would think that shutting down the SparkContext would clear out any
> vestigials of the JVM, so I'm surprised that this would even be a problem.
> Note: all other smoke tests we are running passes fine.
> I will attach the stacktrace and a python script reproducing the issue (at
> least for my environment and build).
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