java.lang.Object
- org.openstreetmap.atlas.mutator.AtlasMutatorDriver

```
public final class AtlasMutatorDriver
extends java.lang.Object
```
Helper class to AtlasMutator which handles RDD processing. Those methods are designed to be run on the driver.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>>`	`getAtlasGroupsRDD(java.lang.String name, int size, org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> atlasRDD, java.util.function.Function<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Set<org.openstreetmap.atlas.geography.sharding.CountryShard>> shardExplorer, java.util.Optional<InputDependency> inputDependencyOption)`	Take an AtlasRDD and join it with all the shards needed for expansion for each shard, to get a new RDD that contains all the needed Atlas files for each shard.
`protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>>`	`getAtlasGroupsRDDSimple(java.lang.String name, org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> atlasRDD)`	Take a simple Atlas RDD and make it look like a group RDD with the identity shard explorer
`protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>`	`getAtlasRDD(AtlasMutationLevel level, org.apache.spark.api.java.JavaRDD<org.openstreetmap.atlas.geography.sharding.CountryShard> shardsRDD)`	Take a Shard RDD and make it into an AtlasRDD using the level's fetcher.
`protected static java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>`	`iterableToMap(java.lang.String name, java.lang.Iterable<org.openstreetmap.atlas.utilities.tuples.Tuple<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>> iterable, org.openstreetmap.atlas.geography.sharding.CountryShard originShard, InputDependency inputDependency)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getAtlasGroupsRDD

protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>> getAtlasGroupsRDD(java.lang.String name,
                                                                                                                                                                                                                                                                                int size,
                                                                                                                                                                                                                                                                                org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> atlasRDD,
                                                                                                                                                                                                                                                                                java.util.function.Function<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Set<org.openstreetmap.atlas.geography.sharding.CountryShard>> shardExplorer,
                                                                                                                                                                                                                                                                                java.util.Optional<InputDependency> inputDependencyOption)

Take an AtlasRDD and join it with all the shards needed for expansion for each shard, to get a new RDD that contains all the needed Atlas files for each shard.

Parameters:: name - The name used to prefix the RDD names in the Spark UI; size - The pre-computed RDD size; atlasRDD - The original Atlas RDD. It needs to be cached; shardExplorer - The function that determines what shards are needed for expansion, given a shard.; inputDependencyOption - Optionally, an input dependency in case the expansion shards need to be filtered down
Returns:: A new RDD that contains all the needed Atlas files for each shard.

getAtlasGroupsRDDSimple

protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>> getAtlasGroupsRDDSimple(java.lang.String name,
                                                                                                                                                                                                                                                                                      org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> atlasRDD)

Take a simple Atlas RDD and make it look like a group RDD with the identity shard explorer

Parameters:: name - The name used to prefix the RDD names in the Spark UI; atlasRDD - The original Atlas RDD. It needs to be cached
Returns:: A new RDD that contains all the single Atlas files for each shard (in this case it is the same).

getAtlasRDD

protected static org.apache.spark.api.java.JavaPairRDD<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> getAtlasRDD(AtlasMutationLevel level,
                                                                                                                                                                                             org.apache.spark.api.java.JavaRDD<org.openstreetmap.atlas.geography.sharding.CountryShard> shardsRDD)

Take a Shard RDD and make it into an AtlasRDD using the level's fetcher.

Parameters:: level - The level to use to generate the initial Atlas RDD.; shardsRDD - The original Shard RDD
Returns:: A new RDD that contains each Atlas file for each Shard.

iterableToMap

protected static java.util.Map<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas> iterableToMap(java.lang.String name,
                                                                                                                                                                       java.lang.Iterable<org.openstreetmap.atlas.utilities.tuples.Tuple<org.openstreetmap.atlas.geography.sharding.CountryShard,org.openstreetmap.atlas.geography.atlas.packed.PackedAtlas>> iterable,
                                                                                                                                                                       org.openstreetmap.atlas.geography.sharding.CountryShard originShard,
                                                                                                                                                                       InputDependency inputDependency)