[Koha] Elasticsearch: [query_string] cannot use [fields] parameter in conjunction with [default_field]; in Koha 19.05 with Elasticsearch 6.

[Simon Hohl]

Hello everybody,

in light of the Log4j debacle last year, I am currently trying to update 
Elasticsearch to the current version of 6, from our old version 5. I 
read in the wiki (https://wiki.koha-community.org/wiki/Elasticsearch) that

> Note: As of 20.05.00, 19.11.05 and 19.05.10 releases, we recommend 
> Elasticsearch 6.x 
We are at 19.05.17. I updated accordingly and did a complete re-index, 
but I get the appended error for searches. Did I miss something? An 
upgrade to the current Koha version is planned for later this year, but 
will require more testing to make sure all our local changes get 
re-applied after upgrading via package.

Kind regards

Simon


> [2022-02-17T07:50:10,007][DEBUG][o.e.a.s.TransportSearchAction] 
> [vgY4zBy] All shards failed for phase: [query]
> org.elasticsearch.index.query.QueryShardException: failed to create 
> query: {
>   "query_string" : {
>     "query" : "(_all:A*)",
>     "default_field" : "_all",
>     "fields" : [
>       "_all^1.0"
>     ],
>     "type" : "best_fields",
>     "default_operator" : "and",
>     "max_determinized_states" : 10000,
>     "enable_position_increments" : true,
>     "fuzziness" : "AUTO",
>     "fuzzy_prefix_length" : 0,
>     "fuzzy_max_expansions" : 50,
>     "phrase_slop" : 0,
>     "analyze_wildcard" : true,
>     "lenient" : true,
>     "escape" : false,
>     "auto_generate_synonyms_phrase_query" : true,
>     "fuzzy_transpositions" : true,
>     "boost" : 1.0
>   }
> }
>     at 
> org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:335) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:318) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService.parseSource(SearchService.java:806) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService.createContext(SearchService.java:653) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService.createAndPutContext(SearchService.java:604) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:388) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService.access$100(SearchService.java:127) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService$2.onResponse(SearchService.java:360) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService$2.onResponse(SearchService.java:356) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.search.SearchService$4.doRun(SearchService.java:1129) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:41) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:778) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) 
> [elasticsearch-6.8.23.jar:6.8.23]
>     at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
> [?:1.8.0_322]
>     at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
> [?:1.8.0_322]
>     at java.lang.Thread.run(Thread.java:750) [?:1.8.0_322]
> Caused by: org.elasticsearch.index.query.QueryValidationException: 
> Validation Failed: 1: [query_string] cannot use [fields] parameter in 
> conjunction with [default_field];
>     at 
> org.elasticsearch.index.query.QueryValidationException.addValidationError(QueryValidationException.java:43) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.AbstractQueryBuilder.addValidationError(AbstractQueryBuilder.java:183) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.QueryStringQueryBuilder.doToQuery(QueryStringQueryBuilder.java:977) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.AbstractQueryBuilder.toQuery(AbstractQueryBuilder.java:106) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.QueryShardContext.lambda$toQuery$2(QueryShardContext.java:319) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     at 
> org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:331) 
> ~[elasticsearch-6.8.23.jar:6.8.23]
>     ... 16 more