Caused by: org.elasticsearch.ElasticSearchException: java.lang.OutOfMemoryError: Java heap space
	at org.elasticsearch.index.fielddata.AbstractIndexFieldData.load(AbstractIndexFieldData.java:60)
	at org.elasticsearch.index.fielddata.plain.AbstractBytesIndexFieldData.load(AbstractBytesIndexFieldData.java:41)
	at org.elasticsearch.search.facet.terms.strings.TermsStringOrdinalsFacetExecutor$Collector.setNextReader(TermsStringOrdinalsFacetExecutor.java:205)
	at org.elasticsearch.common.lucene.MultiCollector.setNextReader(MultiCollector.java:68)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:615)
	at org.elasticsearch.search.internal.ContextIndexSearcher.search(ContextIndexSearcher.java:162)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:488)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:444)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:281)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:269)
	at org.elasticsearch.search.query.QueryPhase.execute(QueryPhase.java:134)
	... 32 more
Caused by: org.elasticsearch.common.util.concurrent.ExecutionError: java.lang.OutOfMemoryError: Java heap space
	at org.elasticsearch.common.cache.LocalCache$Segment.get(LocalCache.java:2197)
	at org.elasticsearch.common.cache.LocalCache.get(LocalCache.java:3932)
	at org.elasticsearch.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4721)
	at org.elasticsearch.indices.fielddata.cache.IndicesFieldDataCache$IndexFieldCache.load(IndicesFieldDataCache.java:144)
	at org.elasticsearch.index.fielddata.AbstractIndexFieldData.load(AbstractIndexFieldData.java:53)
	... 42 more
Caused by: java.lang.OutOfMemoryError: Java heap space