I am trying to read a parquet file into a datastream and then register that stream as a temporary table. This file is created by spark 2.4 in HDFS on AWS EMR. I am using flink version 1.10.0 with EMR 5.30.
I am getting the following error: Caused by: org.apache.flink.streaming.runtime.tasks.AsynchronousException: Caught exception when processing split: null at org.apache.flink.streaming.runtime.tasks.StreamTask$StreamTaskAsyncExceptionHandler.handleAsyncException(StreamTask.java:1090) at org.apache.flink.streaming.runtime.tasks.StreamTask.handleAsyncException(StreamTask.java:1058) at org.apache.flink.streaming.api.functions.source.ContinuousFileReaderOperator$SplitReader.run(ContinuousFileReaderOperator.java:351) Caused by: java.lang.ClassCastException: Expected instance of group converter but got "org.apache.flink.formats.parquet.utils.RowConverter$RowPrimitiveConverter" at org.apache.parquet.io.api.Converter.asGroupConverter(Converter.java:34) at org.apache.parquet.io.RecordReaderImplementation.<init>(RecordReaderImplementation.java:267) at org.apache.parquet.io.MessageColumnIO$1.visit(MessageColumnIO.java:147) at org.apache.parquet.io.MessageColumnIO$1.visit(MessageColumnIO.java:109) at org.apache.parquet.filter2.compat.FilterCompat$NoOpFilter.accept(FilterCompat.java:165) at org.apache.parquet.io.MessageColumnIO.getRecordReader(MessageColumnIO.java:109) at org.apache.flink.formats.parquet.utils.ParquetRecordReader.createRecordReader(ParquetRecordReader.java:118) at org.apache.flink.formats.parquet.utils.ParquetRecordReader.readNextRecord(ParquetRecordReader.java:227) at org.apache.flink.formats.parquet.utils.ParquetRecordReader.reachEnd(ParquetRecordReader.java:207) at org.apache.flink.formats.parquet.ParquetInputFormat.reachedEnd(ParquetInputFormat.java:233) at org.apache.flink.streaming.api.functions.source.ContinuousFileReaderOperator$SplitReader.run(ContinuousFileReaderOperator.java:327) Below is a snippet of code that shows how I am trying to read the parquet file: String filePath = "hdfs:///path/to/single/file.parquet"; ParquetFileReader reader = ParquetFileReader.open(HadoopInputFile.fromPath(new org.apache.hadoop.fs.Path(filePath), new Configuration())); MessageType schema = reader.getFooter().getFileMetaData().getSchema(); String parquetPath = "hdfs:///path/to/parquet/directoryā€¯; DataStream<Row> parquetStream = env.readFile(new ParquetRowInputFormat(new org.apache.flink.core.fs.Path(parquetPath), schema), parquetPath); Table parquetTable = tEnv.fromDataStream(parquetStream); tEnv.createTemporaryView("isession", parquetTable); Thanks, Jesse