Bootstrap method initialization exception - Elasticsearch 7.8.0

Question

Using java-high-level-rest client when we call getMapping for index or create index functions below errors get generated every time. almost for all the index related calls are generating this exception.

bootstrap method initialization exception
at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:194)
at java.base/java.lang.invoke.CallSite.makeSite(CallSite.java:315)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:259)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:249)
at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1883)
at org.elasticsearch.client.RestHighLevelClient.lambda$performRequestAndParseEntity$9(RestHighLevelClient.java:1564)
at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1628)
at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1596)
at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1563)
at org.elasticsearch.client.IndicesClient.getMapping(IndicesClient.java:282)

Caused by: java.lang.invoke.LambdaConversionException: Invalid receiver type interface org.apache.http.Header; not a subtype of implementation type interface org.apache.http.NameValuePair
at java.base/java.lang.invoke.AbstractValidatingLambdaMetafactory.validateMetafactoryArgs(AbstractValidatingLambdaMetafactory.java:254)
at java.base/java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:327)
at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:127)

I am using below environments

elasticsearch - 7.8.0. openJDK - 11 and 14, JDK 1.8 elasticsearch-rest-high-level-client-7.8.0.jar and its dependencies included in pom.xml Operation System : Tried both Windows 10 and Linux Mint.

Answer 1

Change your pom.xml configuration

It may be that your elasticsearch-rest-high-level-client version is too high.

    <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>7.2.1</version>
    </dependency>

After I did this it was normal

Answer 2

i have get the same error, i found the httpcore version is not correct. my dependecy like this

<dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>7.16.2</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client</artifactId>
            <version>7.16.2</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>7.16.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.12</version>
        </dependency>

Answer 3

I ran into this because of a conflict with httpcore dependencies, in particular httpcore and httpcore-nio were incompatible. Dig into the pom of your elasticsearch-rest-client version and use the same versions as in there, or exclude them from your other dependencies.