Trivial Description
Quite trivial, but just noticed this on a customer project: in AvroRecordReader and HFileInputFormat, close() closes a reader object. However it will be null if initialize() is never called or fails to complete normally, generating an NPE. It ends up being an issue since their close() is called in some kind of finally block at some point.
Attaching a patch for now but do we do pull requests here now instead?