# Kubernetes deployment - 3rd Stateful set replica always fail with java.lang.ClassNotFoundException: com.fasterxml.jackson.core.io.JsonStringEncoder

**URL:** <https://discuss.elastic.co/t/kubernetes-deployment-3rd-stateful-set-replica-always-fail-with-java-lang-classnotfoundexception-com-fasterxml-jackson-core-io-jsonstringencoder/334613>\
**Category:** Elasticsearch\
**Tags:** docker\
**Created:** [May 29, 2023, 6:37pm UTC](https://discuss.elastic.co/t/kubernetes-deployment-3rd-stateful-set-replica-always-fail-with-java-lang-classnotfoundexception-com-fasterxml-jackson-core-io-jsonstringencoder/334613 "2023-05-29T18:37:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kolslearningid](https://avatars.discourse-cdn.com/v4/letter/k/ecae2f/32.png) [@kolslearningid](https://discuss.elastic.co/u/kolslearningid)\
**Post date:** [May 29, 2023, 6:37pm UTC](https://discuss.elastic.co/t/kubernetes-deployment-3rd-stateful-set-replica-always-fail-with-java-lang-classnotfoundexception-com-fasterxml-jackson-core-io-jsonstringencoder/334613/1 "2023-05-29T18:37:07Z")

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I am trying to build a three replica stateful set Elasticsearch cluster in EKS using helm chart. When I deploy with one or two replicas the PODs are getting created and attached in the cluster mode. When I increase the replica count to 3 then the new pod always gets fails with the below error during startup. I am trying to create all three stateful set POD's using role MASTER+DATA. Wondering how come other two POD's using the same image got started successfully whereas the 3rd one always ending up with a class not found issue.

Docker image : elasticsearch:8.7.1

```auto
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.io.JsonStringEncoder

```

Getting below error when I try to use docker image : [docker.elastic.co/elasticsearch/elasticsearch:7.17.9](http://docker.elastic.co/elasticsearch/elasticsearch:7.17.9)

whatever the image I use, the 3rd stateful set POD always gets stuck in some class not found issue.

```auto
ElasticsearchException[Could not find plugin class [org.elasticsearch.xpack.security.Security]]; nested: ClassNotFoundException[org.elasticsearch.xpack.security.Security];
Likely root cause: java.lang.ClassNotFoundException: org.elasticsearch.xpack.security.Security
    at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
    at java.base/java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:872)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    at java.base/java.lang.Class.forName0(Native Method)
    at java.base/java.lang.Class.forName(Class.java:495)
    at java.base/java.lang.Class.forName(Class.java:474)
    at org.elasticsearch.plugins.PluginsService.loadPluginClass(PluginsService.java:777)
    at org.elasticsearch.plugins.PluginsService.loadBundle(PluginsService.java:738)
    at org.elasticsearch.plugins.PluginsService.loadBundles(PluginsService.java:533)
    at org.elasticsearch.plugins.PluginsService.<init>(PluginsService.java:170)
    at org.elasticsearch.node.Node.<init>(Node.java:411)
    at org.elasticsearch.node.Node.<init>(Node.java:309)
    at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:234)
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:234)
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:434)
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:169)
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:160)
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:77)
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
    at org.elasticsearch.cli.Command.main(Command.java:77)
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:125)
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:80)
For complete error details, refer to the log at /usr/share/elasticsearch/logs/elasticsearch.log
2023-05-23 19:03:59,695328 UTC [432] INFO Main.cc@111 Parent process died - ML controller exiting

```

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 26, 2023, 6:38pm UTC](https://discuss.elastic.co/t/kubernetes-deployment-3rd-stateful-set-replica-always-fail-with-java-lang-classnotfoundexception-com-fasterxml-jackson-core-io-jsonstringencoder/334613/2 "2023-06-26T18:38:04Z")

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