Exception in Explain API: async actions are left after rewrite #64281
Description
Elasticsearch version (bin/elasticsearch --version): 7.9.3
Steps to reproduce:
DELETE social-network PUT social-network/_doc/data?refresh { "key":"value" } GET social-network/_doc/data/_explain { "query": { "bool": { "should": [ { "terms": { "_id": { "index": "social-network", "id": "non-existent", "path": "does-not-matter" } } } ] } } } returns
# GET social-network/_doc/data/_explain { "error" : { "root_cause" : [ { "type" : "query_shard_exception", "reason" : "failed to create query: async actions are left after rewrite", "index_uuid" : "p5QUbQQySzagagpW9_Lf6w", "index" : "social-network" } ], "type" : "query_shard_exception", "reason" : "failed to create query: async actions are left after rewrite", "index_uuid" : "p5QUbQQySzagagpW9_Lf6w", "index" : "social-network", "caused_by" : { "type" : "illegal_state_exception", "reason" : "async actions are left after rewrite" } }, "status" : 400 }