Writable
classes that describe each column in a Record
. These classes are used to convert each record to a tensor/ND-Array format.BaseRecordReader
and provides a simple API for selecting the next record in a dataset, acting similarly to iterators.next
: Return a batch of Writable
.nextRecord
: Return a single Record
, optionally with RecordMetaData
.reset
: Reset the underlying iterator.hasNext
: Iterator method to determine if another record is available.RecordListener
to a record reader for debugging or visualization purposes. Pass your custom listener to the addListener
base method immediately after initializing your class.