ElasticSearch问题总结

1. No mapping found for [createDate] in order to sort on

org.elasticsearch.action.search.SearchPhaseExecutionException: all shards failed
    at org.elasticsearch.action.search.AbstractSearchAsyncAction.onPhaseFailure(AbstractSearchAsyncAction.java:293)
    at org.elasticsearch.action.search.AbstractSearchAsyncAction.executeNextPhase(AbstractSearchAsyncAction.java:133)
    at org.elasticsearch.action.search.AbstractSearchAsyncAction.onPhaseDone(AbstractSearchAsyncAction.java:254)
    at org.elasticsearch.action.search.InitialSearchPhase.onShardFailure(InitialSearchPhase.java:101)
    at org.elasticsearch.action.search.InitialSearchPhase.access$100(InitialSearchPhase.java:48)
    at org.elasticsearch.action.search.InitialSearchPhase$2.lambda$onFailure$1(InitialSearchPhase.java:222)
    at org.elasticsearch.action.search.InitialSearchPhase.maybeFork(InitialSearchPhase.java:176)
    at org.elasticsearch.action.search.InitialSearchPhase.access$000(InitialSearchPhase.java:48)
    at org.elasticsearch.action.search.InitialSearchPhase$2.onFailure(InitialSearchPhase.java:222)
    at org.elasticsearch.action.ActionListenerResponseHandler.handleException(ActionListenerResponseHandler.java:51)
    at org.elasticsearch.action.search.SearchTransportService$ConnectionCountingHandler.handleException(SearchTransportService.java:464)
    at org.elasticsearch.transport.TransportService$ContextRestoreResponseHandler.handleException(TransportService.java:1130)
    at org.elasticsearch.transport.TransportService$DirectResponseChannel.processException(TransportService.java:1247)
    at org.elasticsearch.transport.TransportService$DirectResponseChannel.sendResponse(TransportService.java:1221)
    at org.elasticsearch.transport.TaskTransportChannel.sendResponse(TaskTransportChannel.java:66)
    at org.elasticsearch.action.support.HandledTransportAction$ChannelActionListener.onFailure(HandledTransportAction.java:112)
    at org.elasticsearch.search.SearchService$1.onFailure(SearchService.java:298)
    at org.elasticsearch.search.SearchService$1.onResponse(SearchService.java:292)
    at org.elasticsearch.search.SearchService$1.onResponse(SearchService.java:286)
    at org.elasticsearch.search.SearchService$4.doRun(SearchService.java:1082)
    at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:723)
    at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
    at org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:41)
    at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.elasticsearch.index.query.QueryShardException:No mapping found for [createDate] in order to sort on
    at org.elasticsearch.search.sort.FieldSortBuilder.build(FieldSortBuilder.java:319)
    at org.elasticsearch.search.sort.SortBuilder.buildSort(SortBuilder.java:153)
    at org.elasticsearch.search.SearchService.parseSource(SearchService.java:782)
    at org.elasticsearch.search.SearchService.createContext(SearchService.java:616)
    at org.elasticsearch.search.SearchService.createAndPutContext(SearchService.java:592)
    at org.elasticsearch.search.SearchService.executeDfsPhase(SearchService.java:304)
    at org.elasticsearch.search.SearchService.access$000(SearchService.java:121)
    at org.elasticsearch.search.SearchService$1.onResponse(SearchService.java:290)
    ... 9 common frames omitted

　　问题分析：这个错误是因为我使用了createDate字段排序造成的，mapping不识别。

　　解决办法：手动指定排序字段的数据类型，数据类型与mapping内容一致。下面是api请求方式：

NativeSearchQuery searchQuery = new NativeSearchQueryBuilder()
                    .withQuery(query)
                    .withPageable(PageRequest.of(data.getPageIndex() - 1, data.getPageSize()))
                    .withSort(SortBuilders.fieldSort("createDate").unmappedType("date").order(SortOrder.DESC))
                    .build();