问题
I am trying to run the CountVectorizerDemo program provided here:
https://github.com/apache/spark/blob/master/examples/src/main/java/org/apache/spark/examples/ml/JavaCountVectorizerExample.java
I'm getting the following error and don't know what the problem is.
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.spark.ml.util.SchemaUtils$.checkColumnType$default$4()Ljava/lang/String;
at org.apache.spark.ml.feature.CountVectorizerParams$class.validateAndTransformSchema(CountVectorizer.scala:71)
at org.apache.spark.ml.feature.CountVectorizer.validateAndTransformSchema(CountVectorizer.scala:107)
at org.apache.spark.ml.feature.CountVectorizer.transformSchema(CountVectorizer.scala:168)
at org.apache.spark.ml.PipelineStage.transformSchema(Pipeline.scala:59)
at org.apache.spark.ml.feature.CountVectorizer.fit(CountVectorizer.scala:130)
at com.bah.ossem.spark.topic.CountVectorizerDemo.main(CountVectorizerDemo.java:42)
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:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:664)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:169)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:192)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:111)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
回答1:
The problem was that my cluster was using Spark core 1.4 but my application was using Spark core 1.5.1 and MLlib 1.5.1. I updated my AWS cluster to Spark 1.5.1 and that fixed the problem.
来源：https://stackoverflow.com/questions/33528996/how-to-resolve-java-lang-nosuchmethoderror-org-apache-spark-ml-util-schemautils