Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Apache's JIRA Issue Tracker by Brian Jeltema, 2 years ago
Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
via apache.org by Unknown author, 2 years ago
Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
via Apache's JIRA Issue Tracker by Brian Jeltema, 1 year ago
Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
via apache.org by Unknown author, 2 years ago
Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected
java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.TaskAttemptContext, but class was expected	at org.apache.cassandra.hadoop.Progressable.progress(Progressable.java:45)	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter.write(CqlRecordWriter.java:183)	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter.write(CqlRecordWriter.java:63)	at org.apache.cassandra.hadoop.pig.CqlStorage.sendCqlQuery(CqlStorage.java:440)	at org.apache.cassandra.hadoop.pig.CqlStorage.cqlQueryFromTuple(CqlStorage.java:414)	at org.apache.cassandra.hadoop.pig.CqlStorage.putNext(CqlStorage.java:362)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:139)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:98)	at org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.write(ReduceTask.java:576)	at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)	at org.apache.hadoop.mapreduce.lib.reduce.WrappedReducer$Context.write(WrappedReducer.java:105)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.runPipeline(PigGenericMapReduce.java:467)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.processOnePackageOutput(PigGenericMapReduce.java:432)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(PigGenericMapReduce.java:412)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(PigGenericMapReduce.java:256)	at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:171)	at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:645)	at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:405)	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Subject.java:415)	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)