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Merge pull request #1490 from metamx/smallCommentInDimExtrTopN 

Add coments to DimExtractionTopNAlgorithm
This commit is contained in:
Fangjin Yang 2015-07-01 10:47:49 -07:00
parent f2919b98b1 5e19a615f1
commit eec972afa3
1 changed files with 1 additions and 1 deletions
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2
processing/src/main/java/io/druid/query/topn/DimExtractionTopNAlgorithm.java
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@ -19,7 +19,6 @@ package io.druid.query.topn;
import com.google.common.collect.Maps; import com.google.common.collect.Maps;
import io.druid.query.aggregation.Aggregator; import io.druid.query.aggregation.Aggregator;
import io.druid.query.extraction.ExtractionFn;
import io.druid.segment.Capabilities; import io.druid.segment.Capabilities;
import io.druid.segment.Cursor; import io.druid.segment.Cursor;
import io.druid.segment.DimensionSelector; import io.druid.segment.DimensionSelector;
@ -28,6 +27,7 @@ import io.druid.segment.data.IndexedInts;
import java.util.Map; import java.util.Map;
/** /**
* This has to be its own strategy because the pooled topn algorithm assumes each index is unique, and cannot handle multiple index numerals referencing the same dimension value.
*/ */
public class DimExtractionTopNAlgorithm extends BaseTopNAlgorithm<Aggregator[][], Map<String, Aggregator[]>, TopNParams> public class DimExtractionTopNAlgorithm extends BaseTopNAlgorithm<Aggregator[][], Map<String, Aggregator[]>, TopNParams>
{ {