Jeffrey Theobald created AVRO-1183:
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Summary: Avro Pair fails to initialize when either they key or
value is a list.
Key: AVRO-1183
URL: https://issues.apache.org/jira/browse/AVRO-1183
Project: Avro
Issue Type: Bug
Components: java
Affects Versions: 1.7.2
Reporter: Jeffrey Theobald
Priority: Minor
Hello,
It seems that a change somewhere between 1.5.7 and 1.7.2 (maybe AVRO-966 ?) has
broken the Avro Pair object, so that you can no longer instantiate a pair when
either the key or the value is a list.
To replicate this bug, try the following:
{code}
Integer key = new Integer(0);
List<Integer> list = new ArrayList<Integer>();
Pair<Integer, List<Integer>> pair = new Pair<Integer, List<Integer>>(key, list);
{code}
It will produce something like the following exception:
{noformat}org.apache.avro.AvroRuntimeException: Can't find element type of
Collection
at
org.apache.avro.reflect.ReflectData.createSchema(ReflectData.java:281)
at
org.apache.avro.specific.SpecificData.getSchema(SpecificData.java:151)
at org.apache.avro.mapred.Pair.<init>(Pair.java:312)
.....SNIP.....
{noformat}
I've used Integer here for illustration but it also affects SpecificRecord
objects.
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