Give more information about a missing Serializer class
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Key: HADOOP-7328
URL: https://issues.apache.org/jira/browse/HADOOP-7328
Project: Hadoop Common
Issue Type: Improvement
Components: io
Affects Versions: 0.20.2
Reporter: Harsh J Chouraria
Assignee: Harsh J Chouraria
Fix For: 0.23.0
When you have a key/value class that's non Writable and you forget to attach
io.serializers for the same, an NPE is thrown by the tasks with no information
on why or what's missing and what led to it. I think a better exception can be
thrown by SerializationFactory instead of an NPE when a class is not found
accepted by any of the loaded ones.
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