alphairys opened a new issue #1034: Datasource writer throws Working with nested fields URL: https://github.com/apache/incubator-hudi/issues/1034 **Issue** I have a dataframe with the following schema that I would like to write out as a hudi table. **Schema** ``` root |-- deviceId: string (nullable = true) |-- eventTimeMilli: long (nullable = true) |-- location: struct (nullable = true) | |-- latitude: double (nullable = true) | |-- longitude: double (nullable = true) ``` **Write out to hudi table:** ``` simple.write.format("org.apache.hudi") .option(DataSourceWriteOptions.RECORDKEY_FIELD_OPT_KEY, "deviceId") .option(DataSourceWriteOptions.PRECOMBINE_FIELD_OPT_KEY, "eventTimeMilli") .option(HoodieWriteConfig.TABLE_NAME, hudiTableName) .mode(SaveMode.Append) .save(hudiTablePath) ``` Running this, i get the following error: ``` Caused by: org.apache.avro.UnresolvedUnionException: Not in union [{"type":"record","name":"location","namespace":"hoodie.hudi_test.hudi_test_record","fields":[{"name":"latitude","type":["double","null"]},{"name":"longitude","type":["double","null"]}]},"null"]: {"latitude": 34.7027, "longitude": 137.54862} at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:740) at ...... ``` **Full Error Log** ``` TaskSetManager: Task 0 in stage 8.0 failed 4 times; aborting job org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 8.0 failed 4 times, most recent failure: Lost task 0.3 in stage 8.0 (TID 243, ip-172-31-23-108.ec2.internal, executor 39): java.io.IOException: Could not create payload for class: org.apache.hudi.OverwriteWithLatestAvroPayload at org.apache.hudi.DataSourceUtils.createPayload(DataSourceUtils.java:129) at org.apache.hudi.DataSourceUtils.createHoodieRecord(DataSourceUtils.java:178) at org.apache.hudi.HoodieSparkSqlWriter$$anonfun$1.apply(HoodieSparkSqlWriter.scala:91) at org.apache.hudi.HoodieSparkSqlWriter$$anonfun$1.apply(HoodieSparkSqlWriter.scala:88) at scala.collection.Iterator$$anon$11.next(Iterator.scala:410) at scala.collection.Iterator$$anon$10.next(Iterator.scala:394) at scala.collection.Iterator$class.foreach(Iterator.scala:891) at scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59) at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:104) at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:48) at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:310) at scala.collection.AbstractIterator.to(Iterator.scala:1334) at scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:302) at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1334) at scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:289) at scala.collection.AbstractIterator.toArray(Iterator.scala:1334) at org.apache.spark.rdd.RDD$$anonfun$take$1$$anonfun$29.apply(RDD.scala:1364) at org.apache.spark.rdd.RDD$$anonfun$take$1$$anonfun$29.apply(RDD.scala:1364) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101) at org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:123) at org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:408) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:414) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.hudi.exception.HoodieException: Unable to instantiate class at org.apache.hudi.common.util.ReflectionUtils.loadClass(ReflectionUtils.java:75) at org.apache.hudi.DataSourceUtils.createPayload(DataSourceUtils.java:126) ... 28 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hudi.common.util.ReflectionUtils.loadClass(ReflectionUtils.java:73) ... 29 more Caused by: org.apache.avro.UnresolvedUnionException: Not in union [{"type":"record","name":"location","namespace":"hoodie.hudi_test.hudi_test_record","fields":[{"name":"latitude","type":["double","null"]},{"name":"longitude","type":["double","null"]}]},"null"]: {"latitude": 34.7027, "longitude": 137.54862} at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:740) at org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:205) at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:123) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:75) at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:166) at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:156) at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:118) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:75) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:62) at org.apache.hudi.common.util.HoodieAvroUtils.avroToBytes(HoodieAvroUtils.java:72) at org.apache.hudi.BaseAvroPayload.<init>(BaseAvroPayload.java:49) at org.apache.hudi.OverwriteWithLatestAvroPayload.<init>(OverwriteWithLatestAvroPayload.java:43) ... 34 more ```
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