NoSuchMethodError: writing spark-streaming data to cassandra
Hi,
I am intending to save the streaming data from kafka into Cassandra, using
spark-streaming:
But there seems to be problem with line
javaFunctions(data).writerBuilder("testkeyspace", "test_table",
mapToRow(TestTable.class)).saveToCassandra();
I am getting NoSuchMethodError.
The code, the error-log and POM.xml dependencies are listed below:
Please help me find the reason as to why is this happening.
public class SparkStream {
static int key=0;
public static void main(String args[]) throws Exception
{
if(args.length != 3)
{
System.out.println("SparkStream
");
System.exit(1);
}
Logger.getLogger("org").setLevel(Level.OFF);
Logger.getLogger("akka").setLevel(Level.OFF);
Map topicMap = new HashMap();
String[] topic = args[2].split(",");
for(String t: topic)
{
topicMap.put(t, new Integer(3));
}
/* Connection to Spark */
SparkConf conf = new SparkConf();
JavaSparkContext sc = new JavaSparkContext("local[4]",
"SparkStream",conf);
JavaStreamingContext jssc = new JavaStreamingContext(sc, new
Duration(3000));
/* Receive Kafka streaming inputs */
JavaPairReceiverInputDStream messages =
KafkaUtils.createStream(jssc, args[0], args[1], topicMap );
/* Create DStream */
JavaDStream data = messages.map(new
Function, TestTable >()
{
public TestTable call(Tuple2 message)
{
return new TestTable(new Integer(++key),
message._2() );
}
}
);
/* Write to cassandra */
javaFunctions(data,TestTable.class).saveToCassandra("testkeyspace","test_table");
// data.print(); //creates console output stream.
jssc.start();
jssc.awaitTermination();
}
}
class TestTable implements Serializable
{
Integer key;
String value;
public TestTable() {}
public TestTable(Integer k, String v)
{
key=k;
value=v;
}
public Integer getKey(){
return key;
}
public void setKey(Integer k){
key=k;
}
public String getValue(){
return value;
}
public void setValue(String v){
value=v;
}
public String toString(){
return
MessageFormat.format("TestTable'{'key={0},value={1}'}'", key, value);
}
}
The output log is:
Exception in thread "main" java.lang.NoSuchMethodError:
com.datastax.spark.connector.streaming.DStreamFunctions.(Lorg/apache/spark/streaming/dstream/DStream;Lscala/reflect/ClassTag;)V
at
com.datastax.spark.connector.DStreamJavaFunctions.(DStreamJavaFunctions.java:17)
at
com.datastax.spark.connector.CassandraJavaUtil.javaFunctions(CassandraJavaUtil.java:89)
at com.spark.SparkStream.main(SparkStream.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:331)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:75)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
And the POM dependencies are:
org.apache.spark
spark-streaming-kafka_2.10
1.1.0
org.apache.spark
spark-streaming_2.10
1.1.0
com.datastax.spark
spark-cassandra-connector_2.10
1.1.0
com.datastax.spark
spark-cassandra-connector-java_2.10
1.0.4
org.apache.spark
spark-core_2.10
1.1.1
com.msiops.footing
footing-tuple
0.2
com.datastax.cassandra
cassandra-driver-core
1.0.8
Thanks,
Aiman
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Re: NoSuchMethodError: writing spark-streaming data to cassandra
You're using two conflicting versions of the connector: the Scala version
at 1.1.0 and the Java version at 1.0.4.
I don't use Java, but I guess you only need the java dependency for your
job - and with the version fixed.
com.datastax.spark
spark-cassandra-connector_2.10
*1.1.0*
com.datastax.spark
spark-cassandra-connector-java_2.10
*1.0.4*
On Tue, Dec 9, 2014 at 11:16 AM, wrote:
>
> Hi,
>
> I am intending to save the streaming data from kafka into Cassandra, using
> spark-streaming:
> But there seems to be problem with line
> javaFunctions(data).writerBuilder("testkeyspace", "test_table",
> mapToRow(TestTable.class)).saveToCassandra();
> I am getting NoSuchMethodError.
> The code, the error-log and POM.xml dependencies are listed below:
> Please help me find the reason as to why is this happening.
>
>
> public class SparkStream {
> static int key=0;
> public static void main(String args[]) throws Exception
> {
> if(args.length != 3)
> {
> System.out.println("SparkStream
> ");
> System.exit(1);
> }
>
> Logger.getLogger("org").setLevel(Level.OFF);
> Logger.getLogger("akka").setLevel(Level.OFF);
> Map topicMap = new
> HashMap();
> String[] topic = args[2].split(",");
> for(String t: topic)
> {
> topicMap.put(t, new Integer(3));
> }
>
> /* Connection to Spark */
> SparkConf conf = new SparkConf();
> JavaSparkContext sc = new JavaSparkContext("local[4]",
> "SparkStream",conf);
> JavaStreamingContext jssc = new
> JavaStreamingContext(sc, new Duration(3000));
>
>
> /* Receive Kafka streaming inputs */
> JavaPairReceiverInputDStream messages =
> KafkaUtils.createStream(jssc, args[0], args[1], topicMap );
>
>
> /* Create DStream */
> JavaDStream data = messages.map(new
> Function, TestTable >()
> {
> public TestTable call(Tuple2
> message)
> {
> return new TestTable(new Integer(++key),
> message._2() );
> }
> }
> );
>
> /* Write to cassandra */
>
> javaFunctions(data,TestTable.class).saveToCassandra("testkeyspace","test_table");
> // data.print(); //creates console output stream.
>
>
> jssc.start();
> jssc.awaitTermination();
>
> }
> }
>
> class TestTable implements Serializable
> {
> Integer key;
> String value;
>
> public TestTable() {}
>
> public TestTable(Integer k, String v)
> {
> key=k;
> value=v;
> }
>
> public Integer getKey(){
> return key;
> }
>
> public void setKey(Integer k){
> key=k;
> }
>
> public String getValue(){
> return value;
> }
>
> public void setValue(String v){
> value=v;
> }
>
> public String toString(){
> return
> MessageFormat.format("TestTable'{'key={0},value={1}'}'", key, value);
> }
> }
>
> The output log is:
> Exception in thread "main" java.lang.NoSuchMethodError:
> com.datastax.spark.connector.streaming.DStreamFunctions.(Lorg/apache/spark/streaming/dstream/DStream;Lscala/reflect/ClassTag;)V
> at
> com.datastax.spark.connector.DStreamJavaFunctions.(DStreamJavaFunctions.java:17)
> at
> com.datastax.spark.connector.CassandraJavaUtil.javaFunctions(CassandraJavaUtil.java:89)
> at com.spark.SparkStream.main(SparkStream.java:83)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:483)
> at
> org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:331)
> at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:75)
> at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
>
>
> And the POM dependencies are:
>
>
> org.apache.spark
> spark-streaming-kafka_2.10
> 1.1.0
>
>
>
> org.apache.spark
> spark-streaming_2.10
> 1.1.0
>
>
>
> com.datastax.spark
> spark-cassandra-connector_2.10
> 1.1.0
>
>
> com.datastax.spark
> spark-cassandr
Re: NoSuchMethodError: writing spark-streaming data to cassandra
Hi,
@Gerard- Thanks, i added one more dependency for
conf.set("spark.cassandra.connection.host", "localhost").
But now, i am able to create a connection, but the data is not getting inserted
into the cassandra table.
and the logs show its getting connected and the next second getting
disconnected.
the full code and the logs and dependencies are below:
public class SparkStream {
static int key=0;
public static void main(String args[]) throws Exception
{
if(args.length != 3)
{
System.out.println("parameters not given properly");
System.exit(1);
}
Logger.getLogger("org").setLevel(Level.OFF);
Logger.getLogger("akka").setLevel(Level.OFF);
Map topicMap = new HashMap();
String[] topic = args[2].split(",");
for(String t: topic)
{
topicMap.put(t, new Integer(3));
}
/* Connection to Spark */
SparkConf conf = new SparkConf();
conf.set("spark.cassandra.connection.host", "localhost");
JavaSparkContext sc = new JavaSparkContext("local[4]", "SparkStream",conf);
JavaStreamingContext jssc = new JavaStreamingContext(sc, new Duration(5000));
/* connection to cassandra */
CassandraConnector connector = CassandraConnector.apply(sc.getConf());
System.out.println("+++cassandra connector
created");
/* Receive Kafka streaming inputs */
JavaPairReceiverInputDStream messages =
KafkaUtils.createStream(jssc, args[0], args[1], topicMap );
System.out.println("+streaming Connection
done!+++");
/* Create DStream */
JavaDStream data = messages.map(new Function< Tuple2,
TestTable >()
{
public TestTable call(Tuple2 message)
{
return new TestTable(new Integer(++key), message._2() );
}
}
);
System.out.println("JavaDStream
created");
/* Write to cassandra */
javaFunctions(data).writerBuilder("testkeyspace", "test_table",
mapToRow(TestTable.class)).saveToCassandra();
jssc.start();
jssc.awaitTermination();
}
}
class TestTable implements Serializable
{
Integer key;
String value;
public TestTable() {}
public TestTable(Integer k, String v)
{
key=k;
value=v;
}
public Integer getKey(){
return key;
}
public void setKey(Integer k){
key=k;
}
public String getValue(){
return value;
}
public void setValue(String v){
value=v;
}
public String toString(){
return MessageFormat.format("TestTable'{'key={0}, value={1}'}'", key,
value);
}
}
The log is:
+++cassandra connector created
+streaming Connection done!+++
JavaDStream created
14/12/09 12:07:33 INFO core.Cluster: New Cassandra host
localhost/127.0.0.1:9042 added
14/12/09 12:07:33 INFO cql.CassandraConnector: Connected to Cassandra cluster:
Test Cluster
14/12/09 12:07:33 INFO cql.LocalNodeFirstLoadBalancingPolicy: Adding host
127.0.0.1 (datacenter1)
14/12/09 12:07:33 INFO cql.LocalNodeFirstLoadBalancingPolicy: Adding host
127.0.0.1 (datacenter1)
14/12/09 12:07:34 INFO cql.CassandraConnector: Disconnected from Cassandra
cluster: Test Cluster
14/12/09 12:07:45 INFO core.Cluster: New Cassandra host
localhost/127.0.0.1:9042 added
14/12/09 12:07:45 INFO cql.CassandraConnector: Connected to Cassandra cluster:
Test Cluster
14/12/09 12:07:45 INFO cql.LocalNodeFirstLoadBalancingPolicy: Adding host
127.0.0.1 (datacenter1)
14/12/09 12:07:45 INFO cql.LocalNodeFirstLoadBalancingPolicy: Adding host
127.0.0.1 (datacenter1)
14/12/09 12:07:46 INFO cql.CassandraConnector: Disconnected from Cassandra
cluster: Test Cluster
The POM.xml dependencies are:
org.apache.spark
spark-streaming-kafka_2.10
1.1.0
org.apache.spark
spark-streaming_2.10
1.1.0
com.datastax.spark
spark-cassandra-connector_2.10
1.1.0
com.datastax.spark
spark-cassandra-connector-java_2.10
1.1.0
org.apache.spark
spark-core_2.10
1.1.1
com.msiops.footing
footing-tuple
0.2
com.datastax.cassandra
cassandra-driver-core
2.1.3
Thanks and Regards,
Md. Aiman Sarosh.
Accenture Services Pvt. Ltd.
Mob #: (+91) - 9836112841.
____
From: Gerard Maas
Sent: Tuesday, December 9, 2014 4:39 PM
To: Sarosh, M.
Cc: spark users
Subject: Re: NoSuchMethodError: writing spark-streaming data to cassandra
You're using two conflicting versions of the connector: the Scala version at
1.1.0 and the Java version at 1.0.4.
I don't use Java, but I guess you only need the java dependency for your job -
and with the version fixed.
com.datastax.spark
spark-cassandra-connector_2.10
1.1.0
com.datastax.spark
spark-cassandra-connector-java_2.10
