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Posted to user@spark.apache.org by sathyanarayanan mudhaliyar <sa...@gmail.com> on 2017/02/04 09:24:37 UTC

java.lang.NoSuchMethodError: scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef

Hi ,
I got the error below when executed

Exception in thread "main" java.lang.NoSuchMethodError:
scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef;

error in detail:

Exception in thread "main" java.lang.NoSuchMethodError:
scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef;
    at
com.datastax.spark.connector.cql.CassandraConnector$.com$datastax$spark$connector$cql$CassandraConnector$$createSession(CassandraConnector.scala)
    at
com.datastax.spark.connector.cql.CassandraConnector$$anonfun$3.apply(CassandraConnector.scala:149)
    at
com.datastax.spark.connector.cql.CassandraConnector$$anonfun$3.apply(CassandraConnector.scala:149)
    at
com.datastax.spark.connector.cql.RefCountedCache.createNewValueAndKeys(RefCountedCache.scala:31)
    at
com.datastax.spark.connector.cql.RefCountedCache.acquire(RefCountedCache.scala:56)
    at
com.datastax.spark.connector.cql.CassandraConnector.openSession(CassandraConnector.scala:82)
    at com.nwf.Consumer.main(Consumer.java:63)

code :

    Consumer consumer = new Consumer();
    SparkConf conf = new
SparkConf().setAppName("kafka-sandbox").setMaster("local[2]");
    conf.set("spark.cassandra.connection.host", "localhost"); //connection
for cassandra database
    JavaSparkContext sc = new JavaSparkContext(conf);
    CassandraConnector connector = CassandraConnector.apply(sc.getConf());
    final Session session = connector.openSession();
    final PreparedStatement prepared = session.prepare("INSERT INTO
spark_test5.messages JSON?");


The error is in the line which is in green color.
Thank you guys.

Re: java.lang.NoSuchMethodError: scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef

Posted by Sam Elamin <hu...@gmail.com>.
Hi sathyanarayanan


zero() on scala.runtime.VolatileObjectRef has been introduced in Scala 2.11
You probably have a library compiled against Scala 2.11 and running on a
Scala 2.10 runtime.

See

v2.10:
https://github.com/scala/scala/blob/2.10.x/src/library/scala/runtime/VolatileObjectRef.java
v2.11:
https://github.com/scala/scala/blob/2.11.x/src/library/scala/runtime/VolatileObjectRef.java

Regards
Sam

On Sat, 4 Feb 2017 at 09:24, sathyanarayanan mudhaliyar <
sathyanarayananmudhaliyar@gmail.com> wrote:

> Hi ,
> I got the error below when executed
>
> Exception in thread "main" java.lang.NoSuchMethodError:
> scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef;
>
> error in detail:
>
> Exception in thread "main" java.lang.NoSuchMethodError:
> scala.runtime.ObjectRef.zero()Lscala/runtime/ObjectRef;
>     at
> com.datastax.spark.connector.cql.CassandraConnector$.com$datastax$spark$connector$cql$CassandraConnector$$createSession(CassandraConnector.scala)
>     at
> com.datastax.spark.connector.cql.CassandraConnector$$anonfun$3.apply(CassandraConnector.scala:149)
>     at
> com.datastax.spark.connector.cql.CassandraConnector$$anonfun$3.apply(CassandraConnector.scala:149)
>     at
> com.datastax.spark.connector.cql.RefCountedCache.createNewValueAndKeys(RefCountedCache.scala:31)
>     at
> com.datastax.spark.connector.cql.RefCountedCache.acquire(RefCountedCache.scala:56)
>     at
> com.datastax.spark.connector.cql.CassandraConnector.openSession(CassandraConnector.scala:82)
>     at com.nwf.Consumer.main(Consumer.java:63)
>
> code :
>
>     Consumer consumer = new Consumer();
>     SparkConf conf = new
> SparkConf().setAppName("kafka-sandbox").setMaster("local[2]");
>     conf.set("spark.cassandra.connection.host", "localhost"); //connection
> for cassandra database
>     JavaSparkContext sc = new JavaSparkContext(conf);
>     CassandraConnector connector = CassandraConnector.apply(sc.getConf());
>     final Session session = connector.openSession();
>     final PreparedStatement prepared = session.prepare("INSERT INTO
> spark_test5.messages JSON?");
>
>
> The error is in the line which is in green color.
> Thank you guys.
>
>