With the latest plugin of ES, we are seeing the below. I am trying to debug this in parallel.
The version of the plugin we have is
readonlyrest-1.16.34_es6.5.4.tar.gz
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to load plugin readonlyrest due to jar hell
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:140) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.5.4.jar:6.5.4]
at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) ~[elasticsearch-6.5.4.jar:6.5.4]
Caused by: java.lang.IllegalStateException: failed to load plugin readonlyrest due to jar hell
at org.elasticsearch.plugins.PluginsService.checkBundleJarHell(PluginsService.java:517) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.plugins.PluginsService.loadBundles(PluginsService.java:462) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.plugins.PluginsService.(PluginsService.java:156) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.node.Node.(Node.java:338) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.node.Node.(Node.java:265) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:212) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.5.4.jar:6.5.4]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.5.4.jar:6.5.4]
… 6 more