NPE in FastDeserializerGenerator.java:920
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Description
`
com.linkedin.avro.fastserde.FastDeserializerGeneratorException: java.lang.NullPointerException
at com.linkedin.avro.fastserde.FastDeserializerGenerator.generateDeserializer(FastDeserializerGenerator.java:156) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastSerdeCache.buildFastSpecificDeserializer(FastSerdeCache.java:315) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastSerdeCache.buildSpecificDeserializer(FastSerdeCache.java:340) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastSerdeCache.lambda$getFastSpecificDeserializer$0(FastSerdeCache.java:213) ~[avro-fastserde-0.2.29.jar:?]
at java.util.concurrent.CompletableFuture$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.linkedin.avro.fastserde.FastDeserializerGenerator.processEnum(FastDeserializerGenerator.java:920) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processSimpleType(FastDeserializerGenerator.java:189) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processArray(FastDeserializerGenerator.java:716) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processComplexType(FastDeserializerGenerator.java:169) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processRecord(FastDeserializerGenerator.java:314) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processComplexType(FastDeserializerGenerator.java:165) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processArray(FastDeserializerGenerator.java:713) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processComplexType(FastDeserializerGenerator.java:169) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processUnion(FastDeserializerGenerator.java:591) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processComplexType(FastDeserializerGenerator.java:177) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.processRecord(FastDeserializerGenerator.java:314) ~[avro-fastserde-0.2.29.jar:?]
at com.linkedin.avro.fastserde.FastDeserializerGenerator.generateDeserializer(FastDeserializerGenerator.java:118) ~[avro-fastserde-0.2.29.jar:?]
`
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- Open a pull request that references the issue number.
Research direction
Start in FastDeserializerGenerator.java around processEnum at line 920, then trace the processSimpleType, processArray, processUnion, and processRecord calls shown in the stack trace. Reproduce the reported deserializer-generation path and identify which enum-related value is null; done means the path no longer fails with the reported NullPointerException and has a regression test.
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Assessment
- Tech stack
- java
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
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- 35/100