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From "Addanki, Santosh Kumar" <santosh.kumar.adda...@sap.com>
Subject Hive Context and Mapr
Date Mon, 03 Nov 2014 10:34:40 GMT
Hi

We are currently using Mapr Distribution.

To read the files  from the file system we specify as follows  :

test = sc.textFile("mapr/mycluster/user/mapr/test.csv")

This works fine from Spark Context.

But ...

Currently we are trying to create a table in hive using the hiveContext from Spark.

So when I specify something like

from pyspark.sql import HiveContext
hc = HiveContext(sc)

hc.sql("Create table deleteme_1 " + createString )

hc.sql("LOAD DATA LOCAL INPATH ' mapr/BI2-104/user/mapr/test.csv' INTO TABLE deleteme_1")

We  get the following  error

FAILED: RuntimeException java.io.IOException: No FileSystem for scheme: maprfs


An error occurred while calling o79.sql.
: org.apache.spark.sql.execution.QueryExecutionException: FAILED: RuntimeException java.io.IOException:
No FileSystem for scheme: maprfs
       at org.apache.spark.sql.hive.HiveContext.runHive(HiveContext.scala:302)
       at org.apache.spark.sql.hive.HiveContext.runSqlHive(HiveContext.scala:272)
       at org.apache.spark.sql.hive.execution.NativeCommand.sideEffectResult$lzycompute(NativeCommand.scala:35)
       at org.apache.spark.sql.hive.execution.NativeCommand.sideEffectResult(NativeCommand.scala:35)
       at org.apache.spark.sql.hive.execution.NativeCommand.execute(NativeCommand.scala:38)
       at org.apache.spark.sql.hive.HiveContext$QueryExecution.toRdd$lzycompute(HiveContext.scala:360)
       at org.apache.spark.sql.hive.HiveContext$QueryExecution.toRdd(HiveContext.scala:360)
       at org.apache.spark.sql.SchemaRDDLike$class.$init$(SchemaRDDLike.scala:58)
       at org.apache.spark.sql.SchemaRDD.<init>(SchemaRDD.scala:103)
       at org.apache.spark.sql.hive.HiveContext.sql(HiveContext.scala:98)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:606)
       at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)
       at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379)
       at py4j.Gateway.invoke(Gateway.java:259)
       at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
       at py4j.commands.CallCommand.execute(CallCommand.java:79)
       at py4j.GatewayConnection.run(GatewayConnection.java:207)
       at java.lang.Thread.run(Thread.java:745)

Best Regards
Santosh


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