after switch from 6.5 to 6.6 not working set up in /etc/elasticsearch/elasticsearch.yml of
indices.query.bool.max_clause_count: 10000
with many clause query i got next in log
...
at org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:41) [elasticsearch-6.6.1.jar:6.6.1]
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-6.6.1.jar:6.6.1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: org.apache.lucene.search.BooleanQuery$TooManyClauses: maxClauseCount is set to 1024
at org.apache.lucene.search.BooleanQuery$Builder.add(BooleanQuery.java:114) ~[lucene-core-7.6.0.jar:7.6.0 719cde97f84640faa1e3525690d262946571245f - nknize - 2018-12-07 14:44:20]
at org.elasticsearch.index.query.BoolQueryBuilder.addBooleanClauses(BoolQueryBuilder.java:422) ~[elasticsearch-6.6.1.jar:6.6.1]
at org.elasticsearch.index.query.BoolQueryBuilder.doToQuery(BoolQueryBuilder.java:385) ~[elasticsearch-6.6.1.jar:6.6.1]
at org.elasticsearch.index.query.AbstractQueryBuilder.toQuery(AbstractQueryBuilder.java:104) ~[elasticsearch-6.6.1.jar:6.6.1]
at org.elasticsearch.index.query.QueryShardContext.lambda$toQuery$2(QueryShardContext.java:308) ~[elasticsearch-6.6.1.jar:6.6.1]
at org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:320) ~[elasticsearch-6.6.1.jar:6.6.1]
...
but still have "query":{"bool":{"max_clause_count":"10000"}, substring in
curl -X GET localhost:9200/_cluster/settings?include_defaults=true | grep max_clause_count