Hmm, I don't have a good job I can separate for reproduction. I was using Table SQL and inserting a long field (which was null) into a table that sinked out to avro. The exception was being thrown from this Avro function. I can watch to see if it keeps happening.
https://github.com/apache/avro/blob/e982f2e6ee57c362a7fae21ba7373c1cfc964fce/lang/java/avro/src/main/java/org/apache/avro/generic/GenericDatumWriter.java#L127 On Fri, Dec 11, 2020 at 3:31 AM Till Rohrmann <trohrm...@apache.org> wrote: > Hi Dan, > > Do you have an example job and some sample data to reproduce this problem? > I couldn't reproduce it locally with a simple example job. > > Cheers, > Till > > On Thu, Dec 10, 2020 at 5:51 PM Dan Hill <quietgol...@gmail.com> wrote: > >> Yea, the error makes sense and was an easy fix. >> >> Any idea what happened with the hidden stacktrace? The hidden stacktrace >> made this 100x more difficult. >> >> On Thu, Dec 10, 2020 at 12:59 AM Flavio Pompermaier <pomperma...@okkam.it> >> wrote: >> >>> It looks like the problem is that there's a problem in reading a null >>> value in the AvroRowDataDeserializationSchema (see below for the snippet of >>> code from Flink 1.11.1). >>> The problem is due to the fact that there's a bad typing of the source >>> so the call to createConverter() within the createNullableConverter() >>> returns null, creating a null on fieldConverters[i] and, in the end, a >>> NullPointer in fieldConverters[i].convert(). Does it make sense? >>> >>> static DeserializationRuntimeConverter createRowConverter(RowType >>> rowType) { >>> final DeserializationRuntimeConverter[] fieldConverters = >>> rowType.getFields().stream() >>> .map(RowType.RowField::getType) >>> .map(AvroRowDataDeserializationSchema::createNullableConverter) >>> .toArray(DeserializationRuntimeConverter[]::new); >>> final int arity = rowType.getFieldCount(); >>> return avroObject -> { >>> IndexedRecord record = (IndexedRecord) avroObject; >>> GenericRowData row = new GenericRowData(arity); >>> for (int i = 0; i < arity; ++i) { >>> row.setField(i, fieldConverters[i].convert(record.get(i))); >>> } >>> return row; >>> }; >>> } >>> >>> Best, >>> Flavio >>> >>> On Thu, Dec 10, 2020 at 8:39 AM Dan Hill <quietgol...@gmail.com> wrote: >>> >>>> One of the Exception instances finally reported a stacktrace. I'm not >>>> sure why it's so infrequent. >>>> >>>> java.lang.NullPointerException: null >>>> >>>> at >>>> org.apache.flink.table.data.GenericRowData.getLong(GenericRowData.java:154) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.data.RowData.lambda$createFieldGetter$245ca7d1$7(RowData.java:338) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.formats.avro.AvroRowDataSerializationSchema.lambda$createRowConverter$6827278$1(AvroRowDataSerializationSchema.java:177) >>>> ~[blob_p-97afea7f96212938a7f59355af26e877ab52777d-022ef71f40ed0889789b9e942825fbb7:?] >>>> >>>> at >>>> org.apache.flink.formats.avro.AvroFileSystemFormatFactory$RowDataAvroWriterFactory$1.addElement(AvroFileSystemFormatFactory.java:251) >>>> ~[blob_p-97afea7f96212938a7f59355af26e877ab52777d-022ef71f40ed0889789b9e942825fbb7:?] >>>> >>>> at >>>> org.apache.flink.formats.avro.AvroFileSystemFormatFactory$RowDataAvroWriterFactory$1.addElement(AvroFileSystemFormatFactory.java:247) >>>> ~[blob_p-97afea7f96212938a7f59355af26e877ab52777d-022ef71f40ed0889789b9e942825fbb7:?] >>>> >>>> at >>>> org.apache.flink.table.filesystem.FileSystemTableSink$ProjectionBulkFactory$1.addElement(FileSystemTableSink.java:498) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.filesystem.FileSystemTableSink$ProjectionBulkFactory$1.addElement(FileSystemTableSink.java:494) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.functions.sink.filesystem.BulkPartWriter.write(BulkPartWriter.java:48) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.functions.sink.filesystem.Bucket.write(Bucket.java:202) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.onElement(Buckets.java:282) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSinkHelper.onElement(StreamingFileSinkHelper.java:104) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.filesystem.stream.StreamingFileWriter.processElement(StreamingFileWriter.java:118) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:717) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:692) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:672) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at StreamExecCalc$793.processElement(Unknown Source) ~[?:?] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:717) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:692) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:672) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:53) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.EmitAwareCollector.collect(EmitAwareCollector.java:48) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.EmitAwareCollector.collect(EmitAwareCollector.java:28) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.TimeIntervalJoin.lambda$removeExpiredRows$2(TimeIntervalJoin.java:411) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at java.util.ArrayList.forEach(ArrayList.java:1259) >>>> ~[?:1.8.0_265] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.TimeIntervalJoin.removeExpiredRows(TimeIntervalJoin.java:408) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.TimeIntervalJoin.onTimer(TimeIntervalJoin.java:332) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.table.runtime.operators.join.interval.RowTimeIntervalJoin.onTimer(RowTimeIntervalJoin.java:30) >>>> ~[flink-table-blink_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.co.KeyedCoProcessOperator.onEventTime(KeyedCoProcessOperator.java:95) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> at >>>> org.apache.flink.streaming.api.operators.InternalTimerServiceImpl.advanceWatermark(InternalTimerServiceImpl.java:276) >>>> ~[flink-dist_2.12-1.11.1.jar:1.11.1] >>>> >>>> On Wed, Dec 9, 2020 at 4:33 PM Dan Hill <quietgol...@gmail.com> wrote: >>>> >>>>> In the Flink dashboard, my job is failing with a NullPointerException >>>>> but the Exception is not showing a stack trace. I do not see any >>>>> NullPointerExceptions in any of the flink-jobmanager and flink-taskmanager >>>>> logs. >>>>> >>>>> Is this a normal issue? >>>>> >>>>> [image: Screen Shot 2020-12-09 at 4.29.30 PM.png] >>>>> >>>>
