JohnMTu created AVRO-4148:
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Summary: serializing enums containing java keywords fails in NPE
Key: AVRO-4148
URL: https://issues.apache.org/jira/browse/AVRO-4148
Project: Apache Avro
Issue Type: Bug
Reporter: JohnMTu
Attachments: AvroIssueTest.java
when having schema containing enum with enum-values like "new", "boolean",
"null" which are java reserved keyword, then enum-value is generated with $
suffix using avro-maven-plugin.
When i later try to serialize it to json, it fails on NPE.
Normally i have similar enum deep in structure, and avro-maven-plugin is used.
For simplicity of testcase, i copied generated class into test itself and
instead of using massive structure i reproduce the problem when serializing
enum itself.
See attached test case. This is log output:
{code:java}
java.lang.NullPointerException: null value for (non-nullable)
RecurringChargePeriod at
org.apache.avro.path.TracingNullPointException.summarize(TracingNullPointException.java:88)
at
org.apache.avro.path.TracingNullPointException.summarize(TracingNullPointException.java:30)
at
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:84)
at AvroIssueTest.serializeWrappedEnumToJson(AvroIssueTest.java:56)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
Caused by: java.lang.NullPointerException: Cannot invoke
"java.lang.Integer.intValue()" because the return value of
"java.util.Map.get(Object)" is null
at org.apache.avro.Schema$EnumSchema.getEnumOrdinal(Schema.java:1098)
at
org.apache.avro.generic.GenericDatumWriter.writeEnum(GenericDatumWriter.java:272)
at
org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:148)
at
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:95)
at
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:82)
... 4 more {code}
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