Revert "Adds a new auto-interval date histogram (elastic#28993)"

This reverts commit d88d764.

Author: Paul Sanwald

client/rest-high-level/src/main/java/org/elasticsearch/client/RestHighLevelClient.java

@@ -85,10 +85,8 @@
 import org.elasticsearch.search.aggregations.bucket.geogrid.ParsedGeoHashGrid;
 import org.elasticsearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.global.ParsedGlobal;
-import org.elasticsearch.search.aggregations.bucket.histogram.AutoDateHistogramAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
-import org.elasticsearch.search.aggregations.bucket.histogram.ParsedAutoDateHistogram;
 import org.elasticsearch.search.aggregations.bucket.histogram.ParsedDateHistogram;
 import org.elasticsearch.search.aggregations.bucket.histogram.ParsedHistogram;
 import org.elasticsearch.search.aggregations.bucket.missing.MissingAggregationBuilder;
@@ -1349,7 +1347,6 @@ static List<NamedXContentRegistry.Entry> getDefaultNamedXContents() {
         map.put(GeoCentroidAggregationBuilder.NAME, (p, c) -> ParsedGeoCentroid.fromXContent(p, (String) c));
         map.put(HistogramAggregationBuilder.NAME, (p, c) -> ParsedHistogram.fromXContent(p, (String) c));
         map.put(DateHistogramAggregationBuilder.NAME, (p, c) -> ParsedDateHistogram.fromXContent(p, (String) c));
-        map.put(AutoDateHistogramAggregationBuilder.NAME, (p, c) -> ParsedAutoDateHistogram.fromXContent(p, (String) c));
         map.put(StringTerms.NAME, (p, c) -> ParsedStringTerms.fromXContent(p, (String) c));
         map.put(LongTerms.NAME, (p, c) -> ParsedLongTerms.fromXContent(p, (String) c));
         map.put(DoubleTerms.NAME, (p, c) -> ParsedDoubleTerms.fromXContent(p, (String) c));

docs/reference/aggregations/bucket.asciidoc

@@ -19,8 +19,6 @@ setting named `search.max_buckets`. It is disabled by default (-1) but requests
 
 include::bucket/adjacency-matrix-aggregation.asciidoc[]
 
-include::bucket/autodatehistogram-aggregation.asciidoc[]
-
 include::bucket/children-aggregation.asciidoc[]
 
 include::bucket/composite-aggregation.asciidoc[]

docs/reference/aggregations/bucket/autodatehistogram-aggregation.asciidoc

@@ -109,10 +109,8 @@
 import org.elasticsearch.search.aggregations.bucket.geogrid.InternalGeoHashGrid;
 import org.elasticsearch.search.aggregations.bucket.global.GlobalAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.global.InternalGlobal;
-import org.elasticsearch.search.aggregations.bucket.histogram.AutoDateHistogramAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.histogram.HistogramAggregationBuilder;
-import org.elasticsearch.search.aggregations.bucket.histogram.InternalAutoDateHistogram;
 import org.elasticsearch.search.aggregations.bucket.histogram.InternalDateHistogram;
 import org.elasticsearch.search.aggregations.bucket.histogram.InternalHistogram;
 import org.elasticsearch.search.aggregations.bucket.missing.InternalMissing;
@@ -398,8 +396,6 @@ private void registerAggregations(List<SearchPlugin> plugins) {
                 HistogramAggregationBuilder::parse).addResultReader(InternalHistogram::new));
         registerAggregation(new AggregationSpec(DateHistogramAggregationBuilder.NAME, DateHistogramAggregationBuilder::new,
                 DateHistogramAggregationBuilder::parse).addResultReader(InternalDateHistogram::new));
-        registerAggregation(new AggregationSpec(AutoDateHistogramAggregationBuilder.NAME, AutoDateHistogramAggregationBuilder::new,
-                AutoDateHistogramAggregationBuilder::parse).addResultReader(InternalAutoDateHistogram::new));
         registerAggregation(new AggregationSpec(GeoDistanceAggregationBuilder.NAME, GeoDistanceAggregationBuilder::new,
                 GeoDistanceAggregationBuilder::parse).addResultReader(InternalGeoDistance::new));
         registerAggregation(new AggregationSpec(GeoGridAggregationBuilder.NAME, GeoGridAggregationBuilder::new,

server/src/main/java/org/elasticsearch/search/SearchModule.java

@@ -84,19 +84,6 @@ public final void collectExistingBucket(LeafBucketCollector subCollector, int do
         subCollector.collect(doc, bucketOrd);
     }
 
-    public final void mergeBuckets(long[] mergeMap, long newNumBuckets) {
-        try (IntArray oldDocCounts = docCounts) {
-            docCounts = bigArrays.newIntArray(newNumBuckets, true);
-            docCounts.fill(0, newNumBuckets, 0);
-            for (int i = 0; i < oldDocCounts.size(); i++) {
-                int docCount = oldDocCounts.get(i);
-                if (docCount != 0) {
-                    docCounts.increment(mergeMap[i], docCount);
-                }
-            }
-        }
-    }
-
     public IntArray getDocCounts() {
         return docCounts;
     }