Elasticsearch query string is not compatible with a 6.1.3 Kibana server

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.X, Master
• Fix Version/s: 7.0.0 DXP FP80, 7.0.10.11 DXP SP11, 7.0.X, 7.1.10 DXP FP5, 7.1.10.1 SP1, 7.1.X, 7.2.0 GA1
• Component/s: Search Infrastructure > Elasticsearch Connector
• Labels:
  • 7.1-blocker
  • QA-FP
  • liferay-connector-to-Elasticsearch-6-1.1.0
  • liferay-dxp-70-sp11
  • liferay-dxp-71-sp1
  • liferay-fixpack-de-80-7010
  • liferay-fixpack-dxp-5-7110
  • search-dec18
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Epic Link: Elasticsearch 6.5 upgrade
• Sprint: Search | S02 Sprint 8
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/65657

Steps to reproduce

1. Start portal with elasticsearch 6.1.3 in remote mode
2. Start a kibana 6.1.3 server to connect to the remote elasticsearch server
3. Add a search insights portlet to a page and execute a search
4. Copy the query string from the search insights portlet into kibana and execute it

Expected Result
The search query would be successfully executed

Actual Result
The search query is not executed and this error is shown:

{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "[match_phrase] query does not support [zero_terms_query]",
        "line": 1,
        "col": 561
      }
    ],
    "type": "parsing_exception",
    "reason": "[match_phrase] query does not support [zero_terms_query]",
    "line": 1,
    "col": 561
  },
  "status": 400
}

Reproduced on master - 8c57e44