[PIG-2854] AvroStorage doesn't work with Avro 1.7.1

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.0
• Fix Version/s: 0.11
• Component/s: piggybank
• Hadoop Flags: Reviewed
• Assignee: Cheolsoo Park
• Reporter: Cheolsoo Park
• Created: 01/Aug/12 22:13
• Updated: 22/Feb/13 04:53
• Resolved: 02/Aug/12 02:44

Description

PigAvroDatumWriter fails to compile against Avro 1.7.1 with the following error:

/home/cheolsoo/workspace/pig-trunk/contrib/piggybank/java/src/main/java/org/apache/pig/piggybank/storage/avro/PigAvroDatumWriter.java:119: resolveUnion(org.apache.avro.Schema,java.lang.Object) in org.apache.pig.piggybank.storage.avro.PigAvroDatumWriter cannot override resolveUnion(org.apache.avro.Schema,java.lang.Object) in org.apache.avro.generic.GenericDatumWriter; overridden method does not throw java.io.IOException
protected int resolveUnion(Schema union, Object datum) throws IOException {

The problem is that a new method resolveUnion() is added to GenericDatumWriter in Avro 1.6.x and 1.7.x, but this method conflicts with the one that already exists in PigAvroDatatumWriter.