public interface PartitionNameProvider
Optional interface for Partitioner implementations that need to use a
custom naming scheme for partitions. It is not necessary to implement this
interface if a partitioner extends SimplePartitioner and re-uses the
default partition names.
If a partitioner does implement this interface, however, on a restart the
Partitioner.partition(int) method will not be called again, instead
the partitions will be re-used from the last execution, and matched by name
with the results of getPartitionNames(int).
This can be a useful performance optimisation if the partitioning process is
expensive.
| Modifier and Type | Method and Description |
|---|---|
java.util.Collection<java.lang.String> |
getPartitionNames(int gridSize) |