# How to debug elasticsearch with intellij idea

**URL:** <https://discuss.elastic.co/t/how-to-debug-elasticsearch-with-intellij-idea/72277>\
**Category:** Elasticsearch\
**Created:** [January 20, 2017, 9:45am UTC](https://discuss.elastic.co/t/how-to-debug-elasticsearch-with-intellij-idea/72277 "2017-01-20T09:45:13Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![songfj](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/songfj/32/22256_2.png) [@songfj](https://discuss.elastic.co/u/songfj)\
**Post date:** [January 20, 2017, 9:45am UTC](https://discuss.elastic.co/t/how-to-debug-elasticsearch-with-intellij-idea/72277/1 "2017-01-20T09:45:13Z")

</div>

# Hello every one, I want debug the elasticsearch source code.But I meet the below error, please give me some help, thanks.

## The idea vm config: -Des.foreground=yes -Des.path.home=/Users/myname/projects/elasticsearch/core -Des.logger.level=DEBUG -ea -Dlog4j2.disable.jmx=true -Xms512m -Xmx512m -Des.security.manager.enabled=false -Des.http.cors.enabled=true -Des.http.cors.allow-origin=\* -Delasticsearch -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=logs/heapdump.hprof

=====================================================================  
Error:  
[2017-01-20T17:34:48,353][WARN][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main]  
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: Unsupported transport.type []  
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:127) ~[main/:?]  
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:114) ~[main/:?]  
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:58) ~[main/:?]  
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:122) ~[main/:?]  
at org.elasticsearch.cli.Command.main(Command.java:88) ~[main/:?]  
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:91) ~[main/:?]  
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:84) ~[main/:?]  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]  
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]  
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]  
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0\_111]  
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) ~[idea\_rt.jar:?]  
Caused by: java.lang.IllegalStateException: Unsupported transport.type []  
at org.elasticsearch.common.network.NetworkModule.getTransportSupplier(NetworkModule.java:210) ~[main/:?]  
at org.elasticsearch.node.Node.(Node.java:398) ~[main/:?]  
at org.elasticsearch.node.Node.(Node.java:227) ~[main/:?]  
at org.elasticsearch.bootstrap.Bootstrap$6.(Bootstrap.java:221) ~[main/:?]  
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:221) ~[main/:?]  
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:339) ~[main/:?]  
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:123) ~[main/:?]  
... 11 more

Process finished with exit code 1

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [January 20, 2017, 1:28pm UTC](https://discuss.elastic.co/t/how-to-debug-elasticsearch-with-intellij-idea/72277/2 "2017-01-20T13:28:16Z")

</div>

Read:

> <https://github.com/elastic/elasticsearch/blob/master/TESTING.asciidoc>

```auto
gradle run --debug-jvm

```

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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:** [February 17, 2017, 1:28pm UTC](https://discuss.elastic.co/t/how-to-debug-elasticsearch-with-intellij-idea/72277/3 "2017-02-17T13:28:15Z")

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