Abacn commented on issue #19366:
URL: https://github.com/apache/beam/issues/19366#issuecomment-2610150096
more information here
currently, read parquet-protobuf data with ParquetIO see the following error:
```
Caused by: java.lang.RuntimeException: java.lang.NoSuchMethodException:
org.apache.avro.generic.GenericData$Record.getDescriptor()
org.apache.avro.protobuf.ProtobufData.getSchema(ProtobufData.java:187)
org.apache.avro.protobuf.ProtobufData.setField(ProtobufData.java:80)
org.apache.parquet.avro.AvroRecordConverter.set(AvroRecordConverter.java:474)
org.apache.parquet.avro.AvroRecordConverter$2.add(AvroRecordConverter.java:139)
org.apache.parquet.avro.AvroConverters$BinaryConverter.addValueFromDictionary(AvroConverters.java:87)
org.apache.parquet.column.impl.ColumnReaderBase$1.writeValue(ColumnReaderBase.java:186)
org.apache.parquet.column.impl.ColumnReaderBase.writeCurrentValueToConverter(ColumnReaderBase.java:440)
org.apache.parquet.column.impl.ColumnReaderImpl.writeCurrentValueToConverter(ColumnReaderImpl.java:30)
org.apache.parquet.io.RecordReaderImplementation.read(RecordReaderImplementation.java:406)
org.apache.beam.sdk.io.parquet.ParquetIO$ReadFiles$SplitReadFn.processElement(ParquetIO.java:797)
org.apache.beam.sdk.io.parquet.ParquetIO$ReadFiles$SplitReadFn$DoFnInvoker.invokeProcessElement(Unknown
Source)
org.apache.beam.fn.harness.FnApiDoFnRunner.processElementForWindowObservingSizedElementAndRestriction(FnApiDoFnRunner.java:1131)
org.apache.beam.fn.harness.FnApiDoFnRunner.access$1500(FnApiDoFnRunner.java:145)
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:666)
org.apache.beam.fn.harness.FnApiDoFnRunner$4.accept(FnApiDoFnRunner.java:661)
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:348)
org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:275)
org.apache.beam.fn.harness.BeamFnDataReadRunner.forwardElementToConsumer(BeamFnDataReadRunner.java:213)
org.apache.beam.sdk.fn.data.BeamFnDataInboundObserver.multiplexElements(BeamFnDataInboundObserver.java:172)
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:537)
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:150)
org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:115)
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
org.apache.beam.sdk.util.UnboundedScheduledExecutorService$ScheduledFutureTask.run(UnboundedScheduledExecutorService.java:163)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NoSuchMethodException:
org.apache.avro.generic.GenericData$Record.getDescriptor()
java.base/java.lang.Class.getMethod(Class.java:2108)
org.apache.avro.protobuf.ProtobufData.getSchema(ProtobufData.java:181)
... 27 more
```
This is because Beam's ParquetIO uses Apache Parquet's ParquetFileReader [1]
to read from parquet files.
However, for parquet-protobuf one needs to use ProtoParquetReader [2].
A possible solution is to add a transform configuration that uses
ProtoParquetReader for ParquetIO.readFiles [3]
[1]
https://javadoc.io/doc/org.apache.parquet/parquet-hadoop/latest/org/apache/parquet/hadoop/ParquetFileReader.html
[2]
https://javadoc.io/doc/org.apache.parquet/parquet-protobuf/latest/org/apache/parquet/proto/ProtoParquetReader.html
[3]
https://github.com/apache/beam/blob/067deed9e4e4c8bab4fa7c9fa55e150a0555e462/sdks/java/io/parquet/src/main/java/org/apache/beam/sdk/io/parquet/ParquetIO.java#L126
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