public final class MapJoinOperation extends MapReducePlan
Plan.MRContainerKeyComparator
cache, conf, counter_container, counter_key, max_input_files, temporary_paths, value_container
Constructor and Description |
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MapJoinOperation() |
Modifier and Type | Method and Description |
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static DataSet |
mapJoin(Tree probe_map_fnc,
Tree built_map_fnc,
Tree reduce_fnc,
Tree acc_fnc,
Tree zero,
DataSet probe_dataset,
DataSet built_dataset,
String stop_counter)
The fragment-replicate join (map-side join) physical operator
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aggregate, closure, outputRecords, repeat, setupSplits, setupSplits
binarySource, binarySource, clean, collect, collect, distribute_compiled_arguments, fileCache, functional_argument, generator, generator, getCache, merge, merge, new_path, parsedSource, parsedSource, print_stream, setCache, size
public static final DataSet mapJoin(Tree probe_map_fnc, Tree built_map_fnc, Tree reduce_fnc, Tree acc_fnc, Tree zero, DataSet probe_dataset, DataSet built_dataset, String stop_counter) throws Exception
probe_map_fnc
- left mapper functionbuilt_map_fnc
- right mapper functionreduce_fnc
- reducer functionacc_fnc
- optional accumulator functionzero
- optional the zero value for the accumulatorprobe_dataset
- the map sourcebuilt_dataset
- stored in distributed cachestop_counter
- optional counter used in repeat operationException
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