Apache Beam Coder for GenericRecord
I am building a pipeline that reads Avro generic records. To pass GenericRecord between stages I need to register AvroCoder. The documentation says that if I use generic record, the schema argument can be arbitrary: https://beam.apache.org/releases/javadoc/2.2.0/org/apache/beam/sdk/coders/AvroCoder.html#of-java.lang.Class-org.apache.avro.Schema-
However, when I pass an empty schema to the method AvroCoder.of(Class, Schema) it throws an exception at run time. Is there a way to create an AvroCoder for GenericRecord that does not require a schema? In my case, each GenericRecord has an embedded schema.
The exception and stacktrace:
Exception in thread "main" java.lang.NullPointerException
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409)
at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260)
at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
avro apache-beam dataflow
asked Dec 13 '18 at 14:53
Nutel
66921539
add a comment |
I am building a pipeline that reads Avro generic records. To pass GenericRecord between stages I need to register AvroCoder. The documentation says that if I use generic record, the schema argument can be arbitrary: https://beam.apache.org/releases/javadoc/2.2.0/org/apache/beam/sdk/coders/AvroCoder.html#of-java.lang.Class-org.apache.avro.Schema-
However, when I pass an empty schema to the method AvroCoder.of(Class, Schema) it throws an exception at run time. Is there a way to create an AvroCoder for GenericRecord that does not require a schema? In my case, each GenericRecord has an embedded schema.
The exception and stacktrace:
Exception in thread "main" java.lang.NullPointerException
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409)
at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260)
at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
avro apache-beam dataflow
asked Dec 13 '18 at 14:53
Nutel
66921539
What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07
add a comment |
I am building a pipeline that reads Avro generic records. To pass GenericRecord between stages I need to register AvroCoder. The documentation says that if I use generic record, the schema argument can be arbitrary: https://beam.apache.org/releases/javadoc/2.2.0/org/apache/beam/sdk/coders/AvroCoder.html#of-java.lang.Class-org.apache.avro.Schema-
However, when I pass an empty schema to the method AvroCoder.of(Class, Schema) it throws an exception at run time. Is there a way to create an AvroCoder for GenericRecord that does not require a schema? In my case, each GenericRecord has an embedded schema.
The exception and stacktrace:
Exception in thread "main" java.lang.NullPointerException
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409)
at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260)
at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
avro apache-beam dataflow
asked Dec 13 '18 at 14:53
Nutel
66921539
I am building a pipeline that reads Avro generic records. To pass GenericRecord between stages I need to register AvroCoder. The documentation says that if I use generic record, the schema argument can be arbitrary: https://beam.apache.org/releases/javadoc/2.2.0/org/apache/beam/sdk/coders/AvroCoder.html#of-java.lang.Class-org.apache.avro.Schema-
However, when I pass an empty schema to the method AvroCoder.of(Class, Schema) it throws an exception at run time. Is there a way to create an AvroCoder for GenericRecord that does not require a schema? In my case, each GenericRecord has an embedded schema.
The exception and stacktrace:
Exception in thread "main" java.lang.NullPointerException
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430)
at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409)
at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260)
at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
avro apache-beam dataflow
avro apache-beam dataflow
asked Dec 13 '18 at 14:53
Nutel
66921539
asked Dec 13 '18 at 14:53
Nutel
66921539
edited Dec 27 '18 at 15:16
asked Dec 13 '18 at 14:53
Nutel
66921539
asked Dec 13 '18 at 14:53
Nutel
66921539
asked Dec 13 '18 at 14:53
Nutel
66921539
66921539
What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07
add a comment |
What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07
What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07
add a comment |
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What is the exception that is thrown?
– Kenn Knowles
Dec 14 '18 at 21:15
@KennKnowles Exception in thread "main" java.lang.NullPointerException at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.checkIndexedRecord(AvroCoder.java:562) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.recurse(AvroCoder.java:430) at org.apache.beam.sdk.coders.AvroCoder$AvroDeterminismChecker.check(AvroCoder.java:409) at org.apache.beam.sdk.coders.AvroCoder.<init>(AvroCoder.java:260) at org.apache.beam.sdk.coders.AvroCoder.of(AvroCoder.java:141)
– Nutel
Dec 18 '18 at 1:07