O. Reißig created AVRO-1532:
-------------------------------
Summary: Field deletion not possible for ReflectData: NPE
Key: AVRO-1532
URL: https://issues.apache.org/jira/browse/AVRO-1532
Project: Avro
Issue Type: Bug
Components: java
Affects Versions: 1.7.6
Reporter: O. Reißig
*Actual behaviour:*
I have a field in my reflection-based schema like this:
{code}
@Nullable @AvroDefault('null')
Long someField
{code}
When removing this field, parsing the previous serialized blob yields
NullPointerException:
{noformat}
Caused by: java.lang.NullPointerException
at org.apache.avro.reflect.ReflectData.setField(ReflectData.java:128)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193)
at
org.apache.avro.reflect.ReflectDatumReader.readField(ReflectDatumReader.java:230)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155)
at
org.apache.avro.generic.GenericDatumReader.readMap(GenericDatumReader.java:256)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:154)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193)
at
org.apache.avro.reflect.ReflectDatumReader.readField(ReflectDatumReader.java:230)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151)
at
org.apache.avro.generic.GenericDatumReader.readMap(GenericDatumReader.java:256)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:154)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193)
at
org.apache.avro.reflect.ReflectDatumReader.readField(ReflectDatumReader.java:230)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)
at org.apache.avro.file.DataFileStream.next(DataFileStream.java:233)
at org.apache.avro.file.DataFileStream.next(DataFileStream.java:220)
{noformat}
*Expected behaviour:*
Field removal is crucial for schema evolution and must be possible with
ReflectData.
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