[AVRO-2176] Avro default values not working

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8.1
• Component/s: java
• Assignee: Unassigned
• Reporter: Vidhi Gavadia
• Created: 07/May/18 19:15
• Updated: 06/Jun/18 21:24

Description

We have a field in avro schema like this:

{ "name" : "id", "type" : "int", "default": 0 }

 The expected behavior is that when the field is not supplied, it should have the defauly value of 0.

But we get an exception when we do not provide the value:

java.lang.NullPointerException: null of int in field id 
at org.apache.avro.generic.GenericDatumWriter.npe(GenericDatumWriter.java:132)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:126)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:60)
at com.walmart.wfm.parser.AvroEncode.avroEncode(AvroEncode.java:127)
at com.walmart.wfm.parser.AvroEncode.main(AvroEncode.java:36)
Caused by: java.lang.NullPointerException
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:117)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:153)
at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:143)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:105)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.generic.GenericDatumWriter.writeArray(GenericDatumWriter.java:179)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:107)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:153)
at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:143)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:105)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:153)
at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:143)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:105)
... 4 more