[ https://issues.apache.org/jira/browse/SPARK-18536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Reynold Xin updated SPARK-18536: -------------------------------- Description: {code}import scala.collection.mutable.Queue import org.apache.spark.SparkConf import org.apache.spark.SparkContext import org.apache.spark.sql.SaveMode import org.apache.spark.sql.SparkSession import org.apache.spark.streaming.Seconds import org.apache.spark.streaming.StreamingContext {code} 1. Test code {code} case class EmptyC() case class EmptyCTable(dimensions: EmptyC, timebin: java.lang.Long) object EmptyTest { def main(args: Array[String]): Unit = { val conf = new SparkConf().setAppName("scala").setMaster("local[2]") val ctx = new SparkContext(conf) val spark = SparkSession.builder().enableHiveSupport().config(conf).getOrCreate() val seq = Seq(EmptyCTable(EmptyC(), 1000000L)) val rdd = ctx.makeRDD[EmptyCTable](seq) val ssc = new StreamingContext(ctx, Seconds(1)) val queue = Queue(rdd) val s = ssc.queueStream(queue, false); s.foreachRDD((rdd, time) => { if (!rdd.isEmpty) { import spark.sqlContext.implicits._ rdd.toDF.write.mode(SaveMode.Overwrite).saveAsTable("empty_table") } }) ssc.start() ssc.awaitTermination() } } {code} 2. Exception {noformat} Caused by: java.lang.IllegalStateException: Cannot build an empty group at org.apache.parquet.Preconditions.checkState(Preconditions.java:91) at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:554) at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:426) at org.apache.parquet.schema.Types$Builder.named(Types.java:228) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:527) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:321) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.Iterator$class.foreach(Iterator.scala:893) at scala.collection.AbstractIterator.foreach(Iterator.scala:1336) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at org.apache.spark.sql.types.StructType.foreach(StructType.scala:95) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at org.apache.spark.sql.types.StructType.map(StructType.scala:95) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convert(ParquetSchemaConverter.scala:313) at org.apache.spark.sql.execution.datasources.parquet.ParquetWriteSupport.init(ParquetWriteSupport.scala:85) at org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:288) at org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:262) at org.apache.spark.sql.execution.datasources.parquet.ParquetOutputWriter.<init>(ParquetFileFormat.scala:562) at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anon$1.newInstance(ParquetFileFormat.scala:139) at org.apache.spark.sql.execution.datasources.BaseWriterContainer.newOutputWriter(WriterContainer.scala:131) at org.apache.spark.sql.execution.datasources.DefaultWriterContainer.writeRows(WriterContainer.scala:247) at org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) at org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70) at org.apache.spark.scheduler.Task.run(Task.scala:86) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) ... 3 more {noformat} was: import scala.collection.mutable.Queue import org.apache.spark.SparkConf import org.apache.spark.SparkContext import org.apache.spark.sql.SaveMode import org.apache.spark.sql.SparkSession import org.apache.spark.streaming.Seconds import org.apache.spark.streaming.StreamingContext 1. Test code case class EmptyC() case class EmptyCTable(dimensions: EmptyC, timebin: java.lang.Long) object EmptyTest { def main(args: Array[String]): Unit = { val conf = new SparkConf().setAppName("scala").setMaster("local[2]") val ctx = new SparkContext(conf) val spark = SparkSession.builder().enableHiveSupport().config(conf).getOrCreate() val seq = Seq(EmptyCTable(EmptyC(), 1000000L)) val rdd = ctx.makeRDD[EmptyCTable](seq) val ssc = new StreamingContext(ctx, Seconds(1)) val queue = Queue(rdd) val s = ssc.queueStream(queue, false); s.foreachRDD((rdd, time) => { if (!rdd.isEmpty) { import spark.sqlContext.implicits._ rdd.toDF.write.mode(SaveMode.Overwrite).saveAsTable("empty_table") } }) ssc.start() ssc.awaitTermination() } } 2. Exception Caused by: java.lang.IllegalStateException: Cannot build an empty group at org.apache.parquet.Preconditions.checkState(Preconditions.java:91) at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:554) at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:426) at org.apache.parquet.schema.Types$Builder.named(Types.java:228) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:527) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:321) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.Iterator$class.foreach(Iterator.scala:893) at scala.collection.AbstractIterator.foreach(Iterator.scala:1336) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at org.apache.spark.sql.types.StructType.foreach(StructType.scala:95) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at org.apache.spark.sql.types.StructType.map(StructType.scala:95) at org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convert(ParquetSchemaConverter.scala:313) at org.apache.spark.sql.execution.datasources.parquet.ParquetWriteSupport.init(ParquetWriteSupport.scala:85) at org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:288) at org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:262) at org.apache.spark.sql.execution.datasources.parquet.ParquetOutputWriter.<init>(ParquetFileFormat.scala:562) at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anon$1.newInstance(ParquetFileFormat.scala:139) at org.apache.spark.sql.execution.datasources.BaseWriterContainer.newOutputWriter(WriterContainer.scala:131) at org.apache.spark.sql.execution.datasources.DefaultWriterContainer.writeRows(WriterContainer.scala:247) at org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) at org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70) at org.apache.spark.scheduler.Task.run(Task.scala:86) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) ... 3 more > Failed to save to hive table when case class with empty field > ------------------------------------------------------------- > > Key: SPARK-18536 > URL: https://issues.apache.org/jira/browse/SPARK-18536 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.0.1 > Reporter: pin_zhang > > {code}import scala.collection.mutable.Queue > import org.apache.spark.SparkConf > import org.apache.spark.SparkContext > import org.apache.spark.sql.SaveMode > import org.apache.spark.sql.SparkSession > import org.apache.spark.streaming.Seconds > import org.apache.spark.streaming.StreamingContext > {code} > 1. Test code > {code} > case class EmptyC() > case class EmptyCTable(dimensions: EmptyC, timebin: java.lang.Long) > object EmptyTest { > def main(args: Array[String]): Unit = { > val conf = new SparkConf().setAppName("scala").setMaster("local[2]") > val ctx = new SparkContext(conf) > val spark = > SparkSession.builder().enableHiveSupport().config(conf).getOrCreate() > val seq = Seq(EmptyCTable(EmptyC(), 1000000L)) > val rdd = ctx.makeRDD[EmptyCTable](seq) > val ssc = new StreamingContext(ctx, Seconds(1)) > val queue = Queue(rdd) > val s = ssc.queueStream(queue, false); > s.foreachRDD((rdd, time) => { > if (!rdd.isEmpty) { > import spark.sqlContext.implicits._ > rdd.toDF.write.mode(SaveMode.Overwrite).saveAsTable("empty_table") > } > }) > ssc.start() > ssc.awaitTermination() > } > } > {code} > 2. Exception > {noformat} > Caused by: java.lang.IllegalStateException: Cannot build an empty group > at org.apache.parquet.Preconditions.checkState(Preconditions.java:91) > at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:554) > at org.apache.parquet.schema.Types$GroupBuilder.build(Types.java:426) > at org.apache.parquet.schema.Types$Builder.named(Types.java:228) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:527) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convertField(ParquetSchemaConverter.scala:321) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$$anonfun$convert$1.apply(ParquetSchemaConverter.scala:313) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at scala.collection.Iterator$class.foreach(Iterator.scala:893) > at scala.collection.AbstractIterator.foreach(Iterator.scala:1336) > at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) > at org.apache.spark.sql.types.StructType.foreach(StructType.scala:95) > at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) > at org.apache.spark.sql.types.StructType.map(StructType.scala:95) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter.convert(ParquetSchemaConverter.scala:313) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetWriteSupport.init(ParquetWriteSupport.scala:85) > at > org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:288) > at > org.apache.parquet.hadoop.ParquetOutputFormat.getRecordWriter(ParquetOutputFormat.java:262) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetOutputWriter.<init>(ParquetFileFormat.scala:562) > at > org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anon$1.newInstance(ParquetFileFormat.scala:139) > at > org.apache.spark.sql.execution.datasources.BaseWriterContainer.newOutputWriter(WriterContainer.scala:131) > at > org.apache.spark.sql.execution.datasources.DefaultWriterContainer.writeRows(WriterContainer.scala:247) > at > org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) > at > org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(InsertIntoHadoopFsRelationCommand.scala:143) > at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70) > at org.apache.spark.scheduler.Task.run(Task.scala:86) > at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) > ... 3 more > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org