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Descending split key #121
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Descending split key #121
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added 2 commits
January 22, 2015 15:25
…pecifying min and max split keys
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The mongo-hadoop adapter does not need to know if the split keys are descending or not, as long as the min and max split keys are reversed when using descending keys. The original issue that caused me to make this modification was that the max key of the last split bounds was null and for my descending split key this caused the last split to be significantly larger and include a lot of items that should not have been included. |
Conflicts: core/src/main/java/com/mongodb/hadoop/splitter/StandaloneMongoSplitter.java core/src/main/java/com/mongodb/hadoop/util/MongoConfigUtil.java
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Support specifying "min" and "max" values for the "splitVector" command. Support descending split keys. If a split key is using an index with a descending values, then the key specified for "min" will be greater than the key specified for "max". We need to swap the min and max values when creating the InputSplits.