NPE in processUnion

[oobles]

We're seeing the following NPE when running on Java 11 using fastserde-1.0.5.

com.rtbhouse.utils.avro.FastDeserializerGeneratorException: java.lang.NullPointerException
at com.rtbhouse.utils.avro.FastDeserializerGenerator.generateDeserializer(FastDeserializerGenerator.java:139) ~[avro-fastserde-1.0.5.jar:?]
at com.rtbhouse.utils.avro.FastSerdeCache.buildSpecificDeserializer(FastSerdeCache.java:319) ~[avro-fastserde-1.0.5.jar:?]
at com.rtbhouse.utils.avro.FastSerdeCache.lambda$getFastSpecificDeserializer$1(FastSerdeCache.java:207) ~[avro-fastserde-1.0.5.jar:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.NullPointerException
at com.rtbhouse.utils.avro.FastDeserializerGenerator.processUnion(FastDeserializerGenerator.java:473) ~[avro-fastserde-1.0.5.jar:?]
at com.rtbhouse.utils.avro.FastDeserializerGenerator.processComplexType(FastDeserializerGenerator.java:157) ~[avro-fastserde-1.0.5.jar:?]
at com.rtbhouse.utils.avro.FastDeserializerGenerator.processRecord(FastDeserializerGenerator.java:264) ~[avro-fastserde-1.0.5.jar:?]
at com.rtbhouse.utils.avro.FastDeserializerGenerator.generateDeserializer(FastDeserializerGenerator.java:102) ~[avro-fastserde-1.0.5.jar:?]
... 6 more

The error is at this line:

Symbol.UnionAdjustAction unionAdjustAction = (Symbol.UnionAdjustAction) alternative.symbols[i].production[0];

The production == null.

I think the relevant part of the schema is the "type" in the following:

{
"name": "name",
"type": ["null", "string"]
}

[flowenol]

Thank you for posting this issue, however it would be helpful if you could provide some more information regarding the version of avro library you are using (especially, if it is above 1.8.2) and the minimal schema which reproduces the issue.