:(

{"error":{"root_cause":[],"type":"reduce_search_phase_exception","reason":"[reduce] ","phase":"fetch","grouped":true,"failed_shards":[],"caused_by":{"type":"es_rejected_execution_exception","reason":"rejected execution of org.elasticsearch.action.search.SearchQueryThenFetchAsyncAction$2@3f048801 on EsThreadPoolExecutor[search, queue capacity = 1000, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@2218235d[Running, pool size = 13, active threads = 13, queued tasks = 1000, completed tasks = 20666213746]]"}},"status":503}