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via GitHub by drcrallen
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Class io.druid.segment.data.GenericIndexedWriter$1 does not implement the requested interface com.google.common.io.InputSupplier
java.lang.IncompatibleClassChangeError: Class io.druid.segment.data.GenericIndexedWriter$1 does not implement the requested interface com.google.common.io.InputSupplier	at com.google.common.io.ByteStreams$6.openStream(ByteStreams.java:989)	at com.google.common.io.ByteSource.copyTo(ByteSource.java:202)	at com.google.common.io.ByteStreams.copy(ByteStreams.java:157)	at io.druid.segment.StringDimensionMergerLegacy.writeValueMetadataToFile(StringDimensionMergerLegacy.java:206)	at io.druid.segment.IndexMerger.makeIndexFiles(IndexMerger.java:696)	at io.druid.segment.IndexMerger.merge(IndexMerger.java:438)	at io.druid.segment.IndexMerger.persist(IndexMerger.java:186)	at io.druid.segment.IndexMerger.persist(IndexMerger.java:152)	at io.druid.indexer.spark.SparkDruidIndexer$$anonfun$13$$anonfun$21.apply(SparkDruidIndexer.scala:293)	at io.druid.indexer.spark.SparkDruidIndexer$$anonfun$13$$anonfun$21.apply(SparkDruidIndexer.scala:288)	at scala.collection.Iterator$$anon$11.next(Iterator.scala:409)	at scala.collection.Iterator$class.foreach(Iterator.scala:893)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)	at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59)	at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:183)	at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:45)	at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:310)	at scala.collection.AbstractIterator.to(Iterator.scala:1336)	at scala.collection.TraversableOnce$class.toList(TraversableOnce.scala:294)	at scala.collection.AbstractIterator.toList(Iterator.scala:1336)	at io.druid.indexer.spark.SparkDruidIndexer$$anonfun$13.apply(SparkDruidIndexer.scala:309)	at io.druid.indexer.spark.SparkDruidIndexer$$anonfun$13.apply(SparkDruidIndexer.scala:205)	at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$25.apply(RDD.scala:801)	at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$25.apply(RDD.scala:801)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:319)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:283)	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)	at org.apache.spark.scheduler.Task.run(Task.scala:85)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)