"All Shards Failed" 5 test failures

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Search Infrastructure
• Labels: None
• Sprint: Search|S03 Sprint 17| 6.8-29, Search|S03 Sprint 18|6.29-7.20, Search|S03 Sprint 19|7.21-8.10, Search|S03 Sprint 20 | 8.10-31
• Git Pull Request: https://github.com/arboliveira/liferay-portal/pull/861

Prerequisite: Use branch from LPS-115774 to update ES to 7.7, then run tests with "gw test ---tests [testname]".

Description:
The following tests in portal-search-elasticsearch7-impl fail. 

com.liferay.portal.search.elasticsearch7.internal.sort.ElasticsearchSortUnmappedFieldsTest.testFirstNameIsTextMappingWithEmptyResults
com.liferay.portal.search.elasticsearch7.internal.sort.ElasticsearchSortUnmappedFieldsTest.testSortableKeyword 
com.liferay.portal.search.elasticsearch7.internal.sort.ElasticsearchSortUnmappedFieldsTest.testFirstNameOnNewIndex
com.liferay.portal.search.elasticsearch7.internal.sort.ElasticsearchSortUnmappedFieldsTest.testSortableNumber
com.liferay.portal.search.elasticsearch7.internal.sort.ElasticsearchSortUnmappedFieldsTest.testDefaultIsTextMappingWithEmptyResults

The failure take the form of the following, full logs attached:

ElasticsearchStatusException[Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dHw6thb7] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [dHw6thb7] in order to load field data by uninverting the inverted index. Note that this can use significant memory.]];
        at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
        at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1888)
        at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:1865)
        at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1622)
        at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1579)
        at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1549)
        at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1065)
        at com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.search.SearchSearchRequestExecutorImpl.getSearchResponse(SearchSearchRequestExecutorImpl.java:94)
        at com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.search.SearchSearchRequestExecutorImpl.execute(SearchSearchRequestExecutorImpl.java:66)
        at com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.search.ElasticsearchSearchRequestExecutor.executeSearchRequest(ElasticsearchSearchRequestExecutor.java:59) 

Expected Results: Tests should pass.