# Elastic node get OOM(Out of memory) when make estimateCost **URL:** \ **Category:** Elasticsearch\ **Created:** [June 18, 2025, 12:36pm UTC](https://discuss.elastic.co/t/elastic-node-get-oom-out-of-memory-when-make-estimatecost/379291 "2025-06-18T12:36:54Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Zoree](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/zoree/32/142863_2.png) [@Zoree](https://discuss.elastic.co/u/Zoree)\ **Post date:** [June 18, 2025, 12:36pm UTC](https://discuss.elastic.co/t/elastic-node-get-oom-out-of-memory-when-make-estimatecost/379291/1 "2025-06-18T12:36:54Z")
We get OOM when function estimate Cost trying to complete. How i understand our query is too large? Stacktrace: ```auto Status: error. Problem Suspect 1 920 instances of org.elasticsearch.index.IndexService, loaded by jdk.internal.loader.ClassLoaders$AppClassLoader @ 0x180004140 occupy 7.49 GB (30.18%) bytes. Most of these instances are referenced from one instance of java.util.HashMap$Node[], loaded by , which occupies 36.77 KB (0.00%) bytes. The instance is referenced by org.elasticsearch.indices.IndicesService @ 0x1821c7f08, loaded by jdk.internal.loader.ClassLoaders$AppClassLoader @ 0x180004140. Thread java.lang.Thread @ 0x196941650 elasticsearch[process7][search][T#13] has a local variable or reference to org.elasticsearch.indices.IndicesService @ 0x1821c7f08 which is on the shortest path to java.util.HashMap$Node[2048] @ 0x442ff3f58. The thread java.lang.Thread @ 0x196941650 elasticsearch[process7][search][T#13] keeps local variables with total size 4.01 GB (16.16%) bytes. Significant stack frames and local variables org.elasticsearch.indices.IndicesService.loadIntoContext(Lorg/elasticsearch/search/internal/ShardSearchRequest;Lorg/elasticsearch/search/internal/SearchContext;Lorg/elasticsearch/search/query/QueryPhase;)V (IndicesService.java:1405) org.elasticsearch.indices.IndicesService @ 0x1821c7f08 retains 46.16 KB (0.00%) bytes The stacktrace of this Thread is available. See stacktrace. See stacktrace with involved local variables. Keywords org.elasticsearch.index.IndexService jdk.internal.loader.ClassLoaders$AppClassLoader java.util.HashMap$Node[] org.elasticsearch.indices.IndicesService org.elasticsearch.indices.IndicesService.loadIntoContext(Lorg/elasticsearch/search/internal/ShardSearchRequest;Lorg/elasticsearch/search/internal/SearchContext;Lorg/elasticsearch/search/query/QueryPhase;)V IndicesService.java:1405 Details » Status: error. Problem Suspect 2 169,622 instances of org.apache.lucene.codecs.compressing.CompressingStoredFieldsReader, loaded by jdk.internal.loader.ClassLoaders$AppClassLoader @ 0x180004140 occupy 5.95 GB (23.97%) bytes. Most of these instances are referenced from one instance of java.util.HashMap$Node[], loaded by , which occupies 36.77 KB (0.00%) bytes. The instance is referenced by org.elasticsearch.indices.IndicesService @ 0x1821c7f08, loaded by jdk.internal.loader.ClassLoaders$AppClassLoader @ 0x180004140. Thread java.lang.Thread @ 0x196941650 elasticsearch[process7][search][T#13] has a local variable or reference to org.elasticsearch.indices.IndicesService @ 0x1821c7f08 which is on the shortest path to java.util.HashMap$Node[2048] @ 0x442ff3f58. The thread java.lang.Thread @ 0x196941650 elasticsearch[process7][search][T#13] keeps local variables with total size 4.01 GB (16.16%) bytes. Significant stack frames and local variables org.elasticsearch.indices.IndicesService.loadIntoContext(Lorg/elasticsearch/search/internal/ShardSearchRequest;Lorg/elasticsearch/search/internal/SearchContext;Lorg/elasticsearch/search/query/QueryPhase;)V (IndicesService.java:1405) org.elasticsearch.indices.IndicesService @ 0x1821c7f08 retains 46.16 KB (0.00%) bytes The stacktrace of this Thread is available. See stacktrace. See stacktrace with involved local variables. Keywords org.apache.lucene.codecs.compressing.CompressingStoredFieldsReader jdk.internal.loader.ClassLoaders$AppClassLoader java.util.HashMap$Node[] org.elasticsearch.indices.IndicesService org.elasticsearch.indices.IndicesService.loadIntoContext(Lorg/elasticsearch/search/internal/ShardSearchRequest;Lorg/elasticsearch/search/internal/SearchContext;Lorg/elasticsearch/search/query/QueryPhase;)V IndicesService.java:1405 Details » Status: error. Problem Suspect 3 The thread java.lang.Thread @ 0x196941650 elasticsearch[process7][search][T#13] keeps local variables with total size 4.01 GB (16.16%) bytes. The memory is accumulated in one instance of org.apache.lucene.search.BulkScorer[][], loaded by jdk.internal.loader.ClassLoaders$AppClassLoader @ 0x180004140, which occupies 3.96 GB (15.94%) bytes. Significant stack frames and local variables org.elasticsearch.search.aggregations.bucket.filter.FiltersAggregator$FilterByFilter.estimateCost(J)J (FiltersAggregator.java:324) org.elasticsearch.search.aggregations.bucket.filter.FiltersAggregator$FilterByFilter @ 0x659fcfd38 retains 3.96 GB (15.94%) bytes The stacktrace of this Thread is available. See stacktrace. See stacktrace with involved local variables. Keywords org.apache.lucene.search.BulkScorer[][] jdk.internal.loader.ClassLoaders$AppClassLoader org.elasticsearch.search.aggregations.bucket.filter.FiltersAggregator$FilterByFilter.estimateCost(J)J FiltersAggregator.java:324 Details » ```