Hello,
I’ve switched to 1.1.0, but part of my code doesn’t work any longer.
Despite the fact that I have no Hadoop 1 jar in my dependencies (2.7.1 clients
& flink-hadoop-compatibility_2.10 1.1.0), I have a weird JobContext version
mismatch error, that I was unable to understand.
Code is a hive table read in a local batch flink cluster using a M/R job (from
good package mapreduce, not mapred).
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.Job;
import org.apache.flink.api.java.hadoop.mapreduce.HadoopInputFormat;
(…)
final Job job = Job.getInstance();
final InputFormat<NullWritable, DefaultHCatRecord> hCatInputFormat =
(InputFormat) HCatInputFormat.setInput(job, table.getDbName(),
table.getTableName(), filter);
final HadoopInputFormat<NullWritable, DefaultHCatRecord> inputFormat =
new HadoopInputFormat<NullWritable,
DefaultHCatRecord>(hCatInputFormat, NullWritable.class,
DefaultHCatRecord.class, job);
final HCatSchema inputSchema =
HCatInputFormat.getTableSchema(job.getConfiguration());
return cluster
.createInput(inputFormat)
.flatMap(new RichFlatMapFunction<Tuple2<NullWritable,
DefaultHCatRecord>, T>() {
@Override
public void flatMap(Tuple2<NullWritable, DefaultHCatRecord>
value,
Collector<T> out) throws Exception { // NOPMD
(...)
}
}).returns(beanClass);
Exception is :
org.apache.flink.runtime.client.JobExecutionException: Failed to submit job
69dba7e4d79c05d2967dca4d4a27cf38 (Flink Java Job at Tue Aug 09 09:19:41 CEST
2016)
at
org.apache.flink.runtime.jobmanager.JobManager.org$apache$flink$runtime$jobmanager$JobManager$$submitJob(JobManager.scala:1281)
at
org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1.applyOrElse(JobManager.scala:478)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at
org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at
org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
at
org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
at
scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at
org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at
org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:121)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
at akka.dispatch.Mailbox.run(Mailbox.scala:221)
at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
at
scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.runtime.JobException: Creating the input splits
caused an error: Found interface org.apache.hadoop.mapreduce.JobContext, but
class was expected
at
org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:172)
at
org.apache.flink.runtime.executiongraph.ExecutionGraph.attachJobGraph(ExecutionGraph.java:695)
at
org.apache.flink.runtime.jobmanager.JobManager.org$apache$flink$runtime$jobmanager$JobManager$$submitJob(JobManager.scala:1178)
... 23 more
Caused by: java.lang.IncompatibleClassChangeError: Found interface
org.apache.hadoop.mapreduce.JobContext, but class was expected
at
org.apache.flink.api.java.hadoop.mapreduce.HadoopInputFormatBase.createInputSplits(HadoopInputFormatBase.java:158)
at
org.apache.flink.api.java.hadoop.mapreduce.HadoopInputFormatBase.createInputSplits(HadoopInputFormatBase.java:56)
at
org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:156)
... 25 more
Any idea what has gone wrong ?
Thanks,
Arnaud
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