com.datastax.oss.dsbulk.partitioner

Interface TokenRangeSplitter

All Known Implementing Classes:

Murmur3TokenRangeSplitter, RandomTokenRangeSplitter

public interface TokenRangeSplitter

Splits token ranges into smaller sub-ranges.

Method Summary

Modifier and Type	Method and Description
List<BulkTokenRange>	split(BulkTokenRange tokenRange, int splitCount) Splits the given token range uniformly into sub-ranges with the given desired split count.
default List<BulkTokenRange>	split(Iterable<BulkTokenRange> tokenRanges, int splitCount) Splits the given ranges uniformly into (smaller) splitCount chunks.

Method Detail

split

@NonNull
default List<BulkTokenRange> split(@NonNull
                                            Iterable<BulkTokenRange> tokenRanges,
                                            int splitCount)

Splits the given ranges uniformly into (smaller) splitCount chunks.

Note that the algorithm is size-based and doesn't guarantee exact split count.

Parameters:

tokenRanges - The ranges to split.

splitCount - The desired number of resulting chunks.

Returns:

A list of ranges of approximately splitCount chunks.

split

@NonNull
List<BulkTokenRange> split(@NonNull
                                    BulkTokenRange tokenRange,
                                    int splitCount)

Splits the given token range uniformly into sub-ranges with the given desired split count.

Note that the algorithm is size-based and doesn't guarantee exact split count.

Parameters:

tokenRange - The range to split.

splitCount - The desired number of resulting chunks.

Returns:

A list of ranges of approximately splitCount chunks.