java.lang.ClassNotFoundException: org.elasticsearch.search.aggregations.metrics.cardinality.ParsedCardinality

My environment: two ES clusters: one ES 6.7 and one ES 7.1

My app need to use High Level REST Client to access both cluster at the same time.

When I am using 7.x REST CLIENT with 7.X ES library. When accessing 6.x ES, I got Ccs_minimize_roundtrips error when using 7.X high level REST API to access 6.x index

When I am using 6.x REST CLient with 7.X ES, when accessing 7.x ES,I got java.lang.ClassNotFoundException: org.elasticsearch.search.aggregations.metrics.cardinality.ParsedCardinality since I have a Cardinality Aggregation.

When I am using both 6.x REST Client and ES lib, when access 7.x ES, some of the aggregation result on 7.X ES is not correct.

Any idea how to solve this issue? Thanks

Hi,
this one looks like a bug at first glance. Do you have the complete stacktrace of that exception? And steps to reproduce it?

Here is the stack trace:
ElasticsearchStatusException[Elasticsearch exception [type=index_not_found_exception, reason=no such index [xxx-api]]]
	at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
	at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:2053)
	at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:2030)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1777)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1734)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1696)
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1092)
	...
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
	Suppressed: org.elasticsearch.client.ResponseException: method [POST], host [xxx], URI [/xxx-api/_search?typed_keys=true&ignore_unavailable=false&expand_wildcards=open&allow_no_indices=true&ignore_throttled=true&search_type=query_then_fetch&batched_reduce_size=512], status line [HTTP/1.1 404 Not Found]
{"error":{"root_cause":[{"type":"index_not_found_exception","reason":"no such index [xxx-api]","resource.type":"index_or_alias","resource.id":"xxx-api","index_uuid":"_na_","index":"xxx-api"}],"type":"index_not_found_exception","reason":"no such index [xxx-api]","resource.type":"index_or_alias","resource.id":"xxx-api","index_uuid":"_na_","index":"xxx-api"},"status":404}
		at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:936)
		at org.elasticsearch.client.RestClient.performRequest(RestClient.java:233)
		at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1764)
		... 113 more
	Caused by: org.elasticsearch.client.ResponseException: method [POST], host [xxx], URI [/xxx-api/_search?typed_keys=true&ignore_unavailable=false&expand_wildcards=open&allow_no_indices=true&ignore_throttled=true&search_type=query_then_fetch&batched_reduce_size=512], status line [HTTP/1.1 404 Not Found]
{"error":{"root_cause":[{"type":"index_not_found_exception","reason":"no such index [xxx-api]","resource.type":"index_or_alias","resource.id":"xxx-api","index_uuid":"_na_","index":"xxx-api"}],"type":"index_not_found_exception","reason":"no such index [xxx-api]","resource.type":"index_or_alias","resource.id":"xxx-api","index_uuid":"_na_","index":"xxx-api"},"status":404}
		at org.elasticsearch.client.RestClient$1.completed(RestClient.java:552)
		at org.elasticsearch.client.RestClient$1.completed(RestClient.java:537)
		at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:123)
		at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:181)
		at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:436)
		at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:326)
		at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:265)
		at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81)
		at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39)
		at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:121)
		at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
		at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
		at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
		at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
		at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
		at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:588)
		... 1 more
2019-08-13 16:36:13.750 DEBUG 4688 --- [  XNIO-2 task-1] xxx.errors.ExceptionTranslator   : An unexpected error occurred: null

java.lang.NullPointerException: null
	at xxx.dao.impl.QueryService.search(QueryService.java:237)
	at xxx.dao.impl.QueryService.search(QueryService.java:100)
	at xxx.web.rest.SearchResource.getSummary(SearchResource.java:75)
	at xxx.web.rest.SearchResource$$FastClassBySpringCGLIB$$cec506a1.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	...
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

2019-08-13 16:36:13.788  WARN 4688 --- [  XNIO-2 task-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: java.lang.NullPointerException

There is no easy way to reproduce the error. But the code is like following:
ExpirationDateUtil.getAggregationBuilders(entry.getValue().getPath()).forEach(edrSubAggBuilder -> {

builder.subAggregation(edrSubAggBuilder
         .subAggregation(AggregationBuilders.cardinality("unique_summary_count")
                    .field("relation#summary")));
            });

Before adding is like this and it works fine:
ExpirationDateUtil.getAggregationBuilders(entry.getValue().getPath()).forEach(edrSubAggBuilder -> {

    builder.subAggregation(edrSubAggBuilder);

});

In the stacktrace that you posted, I see an index not found exception being returned, and a null pointer exception in your client code. I don't see any class not found.

Sorry, my bad. Did not pay attention to the error. Here is the correct trace:

org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/elasticsearch/search/aggregations/metrics/cardinality/ParsedCardinality
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:982)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	...
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: org/elasticsearch/search/aggregations/metrics/cardinality/ParsedCardinality
	at org.elasticsearch.client.RestHighLevelClient.lambda$getDefaultNamedXContents$19(RestHighLevelClient.java:2087)
	at org.elasticsearch.common.xcontent.NamedXContentRegistry.parseNamedObject(NamedXContentRegistry.java:141)
	at org.elasticsearch.common.xcontent.support.AbstractXContentParser.namedObject(AbstractXContentParser.java:415)
	at org.elasticsearch.common.xcontent.XContentParserUtils.parseTypedKeysObject(XContentParserUtils.java:153)
	at org.elasticsearch.search.aggregations.bucket.range.ParsedRange$ParsedBucket.parseRangeBucketXContent(ParsedRange.java:182)
	at org.elasticsearch.search.aggregations.bucket.range.ParsedDateRange$ParsedBucket.fromXContent(ParsedDateRange.java:71)
	at org.elasticsearch.search.aggregations.bucket.range.ParsedDateRange.lambda$static$0(ParsedDateRange.java:41)
	at org.elasticsearch.search.aggregations.ParsedMultiBucketAggregation.lambda$declareMultiBucketAggregationFields$0(ParsedMultiBucketAggregation.java:75)
	at org.elasticsearch.common.xcontent.ObjectParser.parseValue(ObjectParser.java:314)
	at org.elasticsearch.common.xcontent.ObjectParser.parseArray(ObjectParser.java:308)
	at org.elasticsearch.common.xcontent.ObjectParser.parseSub(ObjectParser.java:340)
	at org.elasticsearch.common.xcontent.ObjectParser.parse(ObjectParser.java:168)
	at org.elasticsearch.common.xcontent.ObjectParser.parse(ObjectParser.java:131)
	at org.elasticsearch.search.aggregations.bucket.range.ParsedDateRange.fromXContent(ParsedDateRange.java:46)
	at org.elasticsearch.client.RestHighLevelClient.lambda$getDefaultNamedXContents$55(RestHighLevelClient.java:2124)
	at org.elasticsearch.common.xcontent.NamedXContentRegistry.parseNamedObject(NamedXContentRegistry.java:141)
	at org.elasticsearch.common.xcontent.support.AbstractXContentParser.namedObject(AbstractXContentParser.java:415)
	at org.elasticsearch.common.xcontent.XContentParserUtils.parseTypedKeysObject(XContentParserUtils.java:153)
	at org.elasticsearch.search.aggregations.bucket.ParsedSingleBucketAggregation.parseXContent(ParsedSingleBucketAggregation.java:86)
	at org.elasticsearch.search.aggregations.bucket.filter.ParsedFilter.fromXContent(ParsedFilter.java:34)
	at org.elasticsearch.client.RestHighLevelClient.lambda$getDefaultNamedXContents$51(RestHighLevelClient.java:2120)
	at org.elasticsearch.common.xcontent.NamedXContentRegistry.parseNamedObject(NamedXContentRegistry.java:141)
	at org.elasticsearch.common.xcontent.support.AbstractXContentParser.namedObject(AbstractXContentParser.java:415)
	at org.elasticsearch.common.xcontent.XContentParserUtils.parseTypedKeysObject(XContentParserUtils.java:153)
	at org.elasticsearch.search.aggregations.Aggregations.fromXContent(Aggregations.java:141)
	at org.elasticsearch.action.search.SearchResponse.innerFromXContent(SearchResponse.java:292)
	at org.elasticsearch.action.search.SearchResponse.fromXContent(SearchResponse.java:251)
	at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:2053)
	at org.elasticsearch.client.RestHighLevelClient.lambda$performRequestAndParseEntity$13(RestHighLevelClient.java:1697)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1781)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1734)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1696)
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1092)
	at xxx.dao.impl.QueryService.buckets(QueryService.java:425)
	at xxx.web.rest.SearchResource.getBuckets(SearchResource.java:95)
	at xxx.web.rest.SearchResource$$FastClassBySpringCGLIB$$cec506a1.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	...
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
	... 88 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.search.aggregations.metrics.cardinality.ParsedCardinality
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 142 common frames omitted

2019-08-15 09:37:47.420  WARN 472 --- [  XNIO-2 task-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/elasticsearch/search/aggregations/metrics/cardinality/ParsedCardinality

I cannot think of a reason that would cause besides some classpath issues in your application. The version you are using was compiled correctly and relies on the ParsedCardinality class, but at runtime such class is not there when it needs to be loaded. Given that the high-level client depends on the whole elasticsearch server, you possibly have a version of the client in your classpath, but a different version of elasticsearch which does not support yet the cardinality aggregation. Could you check that please?

Why high level REST API lib comes with 2.4.6 version of elasticsearch?

All my elastic search lib are 6.x and above. Cardinality aggs should be there. 2.4.6 will not though. But I have no control over it.

Thanks

The HLRC 6.8.1 depends on Elasticsearch 6.8.1 jar. Your dependencies are overriding that somewhere, that is why it says elasticsearch: 2.4.6 (managed from 6.8.1).

Also, please don't post images of text as they are hardly readable and not searchable. Instead paste the text and format it with </> icon. Check the preview window.

Your application's pom file would be useful to debug this issue.

I am using Spring Boot Starter 1.5.1. It bundles with elasticsearch 2.4.6 jar, that is why 2.4.6 is the managed version. But HLRC 6.8.1 is not smart enough to use the overiding jar. (Strange though, if I lower the Elasticsearch jar to 6.8 instead of 7.x. 6.8.1 HLRC does know to use the 6.8 jar, there is no cardinality error.) So, what is the problem? Latest Spring Boot 2.1.7 is using Elasticsearch 6.4. So, if I upgrade, cardinality should be there. But some other error will happened.
So, I still want to know why overriding jar did not get pick up by 6.8 HLRC correctly when ES jar is 7.x (use 6.8.x ES jar and 6.8.x HLRC jar does not have cardinality error. But when connecting to 7.x ES, some of the aggregation result on 7.X ES is not correct.)

BTW, the image I posted is not a text, it is a window print screen(It is not a text screen). I have no way of formatting it.

When using springboot with
elasticsearch, you need to be explicit with some transitive dependencies as SpringBoot declares a version 6.4...

Basically you can put this in your pom.xml:

<properties>
  <elasticsearch.version>7.3.0<elasticsearch.version>
</properties>

See documentation here: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-build.html#howto-customize-dependency-versions

Tried that, but the error still the same. I search online and the forum, spring boot and elasticsearch with NoClassDefFoundError so far no solution.

Adding the property just make the managed version to be 7.x. But the error remains.

@javanna @rjernst @dadoonet

I think I have figured out the NoClassDefFoundError problem.

In ES 7.x Lib, there is:
     import org.elasticsearch.search.aggregations.metrics.CardinalityAggregationBuilder;
     import org.elasticsearch.search.aggregations.metrics.ParsedCardinality;

In ES 6.x lib, it is:
     import org.elasticsearch.search.aggregations.metrics.cardinality.CardinalityAggregationBuilder;
     import org.elasticsearch.search.aggregations.metrics.cardinality.ParsedCardinality;

So, when using 6.x HLRC, it is expecting   
    org.elasticsearch.search.aggregations.metrics.cardinality.ParsedCardinality.
But I am using ES 7.x lib which does not have this class, but the
    org.elasticsearch.search.aggregations.metrics.ParsedCardinality

Is there any reason for the name change from 6.x to 7.x? I did not see it in the breaking changes note.
I have no easy way of getting around this problem. Lower ES lib to 6.x will have totalHit() as 0 when accessing ES 7.x, since 7.x change the totalHit() to an object with value and relation, 6.x just a long value.
Anyway Elastic.co can change HLRC 6.x lib or 7.x ES lib to make HLRC 6.x compatible with 7.x ES?
Thanks