# IntelliJ settings for Elasticsearch (JAR shading issue) **URL:** \ **Category:** Elasticsearch\ **Created:** [December 28, 2012, 11:18am UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191 "2012-12-28T11:18:28Z")\ **Posts on this page:** 7\ **Page:** 1
**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:** [December 28, 2012, 11:18am UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/1 "2012-12-28T11:18:28Z")
Hi there, This a question a little bit outside ES scope, but not so far... I'm trying to play with IntelliJ (instead of Eclipse) for Elasticsearch. Everything is fine when I compile/test 0.20 branch in IntelliJ. My problem comes when I try to have 2 maven projects in the same workspace (I should say IntelliJ project): - Elasticsearch (branch 0.20) - Spore Elasticsearch [https://github.com/dadoonet/spore-elasticsearch](https://github.com/dadoonet/spore-elasticsearch) project When I launch tests from spore project, I got the following errors when starting ES Nodes (in Java): java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonParser at org.elasticsearch.common.xcontent.XContentType$3.xContent(XContentType.java:85) at org.elasticsearch.common.xcontent.XContentFactory.xContent(XContentFactory.java:110) ... I think it's only a configuration problem as Jackson is shaded in elasticsearch jar and does not have this class in the original package. How do you setup things in IntelliJ to add breakpoints in Elasticsearch when launching tests from another project? Sorry to be a little bit outside the ES scope. -- David Pilato [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs -- ---
**Author:** ![Itamar\_Syn\_Hershko](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/itamar_syn_hershko/32/725_2.png) [@Itamar\_Syn\_Hershko](https://discuss.elastic.co/u/Itamar_Syn_Hershko)\ **Post date:** [December 28, 2012, 11:29am UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/2 "2012-12-28T11:29:59Z")
Can't you do that by adding ES via Maven to your project, and attach sources? IIRC this worked for me before On Fri, Dec 28, 2012 at 1:18 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote: > \*\* > Hi there, > > This a question a little bit outside ES scope, but not so far... > > I'm trying to play with IntelliJ (instead of Eclipse) for Elasticsearch. > Everything is fine when I compile/test 0.20 branch in IntelliJ. > > My problem comes when I try to have 2 maven projects in the same > workspace (I should say IntelliJ project): > > - Elasticsearch (branch 0.20) > - Spore Elasticsearch [https://github.com/dadoonet/spore-elasticsearch](https://github.com/dadoonet/spore-elasticsearch)project > > When I launch tests from spore project, I got the following errors when > starting ES Nodes (in Java): > > java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonParser > at > org.elasticsearch.common.xcontent.XContentType$3.xContent(XContentType.java:85) > at > org.elasticsearch.common.xcontent.XContentFactory.xContent(XContentFactory.java:110) > ... > > I think it's only a configuration problem as Jackson is shaded in > elasticsearch jar and does not have this class in the original package. How > do you setup things in IntelliJ to add breakpoints in Elasticsearch when > launching tests from another project? > > Sorry to be a little bit outside the ES scope. > > -- > David Pilato > [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) > [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > -- -- ---
**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:** [December 28, 2012, 1:32pm UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/3 "2012-12-28T13:32:00Z")
Thanks Itamar, It works fine without importing ES project. The fact is I can not modify ES source code directly this way. But, it's probably a bad practice to launch tests from another project than from ES project itself! Thanks again. Le 28 décembre 2012 à 12:29, Itamar Syn-Hershko [itamar@code972.com](mailto:itamar@code972.com) a écrit : > Can't you do that by adding ES via Maven to your project, and attach sources? > IIRC this worked for me before > > On Fri, Dec 28, 2012 at 1:18 PM, David Pilato \<[david@pilato.fr](mailto:david@pilato.fr) > [mailto:david@pilato.fr](mailto:david@pilato.fr) \> wrote: > > > > Hi there, > > > > This a question a little bit outside ES scope, but not so far... > > > > I'm trying to play with IntelliJ (instead of Eclipse) for Elasticsearch. > > Everything is fine when I compile/test 0.20 branch in IntelliJ. > > > > My problem comes when I try to have 2 maven projects in the same > > workspace (I should say IntelliJ project): > > > > - Elasticsearch (branch 0.20) > > - Spore Elasticsearch [https://github.com/dadoonet/spore-elasticsearch](https://github.com/dadoonet/spore-elasticsearch) > > project > > > > When I launch tests from spore project, I got the following errors when > > starting ES Nodes (in Java): > > > > java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonParser > > at > > org.elasticsearch.common.xcontent.XContentType$3.xContent(XContentType.java:85) > > at > > org.elasticsearch.common.xcontent.XContentFactory.xContent(XContentFactory.java:110) > > ... > > > > I think it's only a configuration problem as Jackson is shaded in > > elasticsearch jar and does not have this class in the original package. How > > do you setup things in IntelliJ to add breakpoints in Elasticsearch when > > launching tests from another project? > > > > Sorry to be a little bit outside the ES scope. > > > > -- > > David Pilato > > [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) > > [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > > > -- > > > > > > > -- -- David Pilato [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs -- ---
**Author:** ![Itamar\_Syn\_Hershko](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/itamar_syn_hershko/32/725_2.png) [@Itamar\_Syn\_Hershko](https://discuss.elastic.co/u/Itamar_Syn_Hershko)\ **Post date:** [December 28, 2012, 1:50pm UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/4 "2012-12-28T13:50:29Z")
Yeah, I know, tried that too with a few hacks but it kept confusing IntelliJ. My workflow is to have ES open in another IntelliJ instance and whenever I need to change ES I change it in that other instance, do mvn install and have the other IntelliJ instance import it again. Visual Studio allows you to do that, I just couldn't figure out how this can be done with IntelliJ (yet?). On Fri, Dec 28, 2012 at 3:32 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote: > \*\* > Thanks Itamar, It works fine without importing ES project. > > The fact is I can not modify ES source code directly this way. But, it's > probably a bad practice to launch tests from another project than from ES > project itself! > > Thanks again. > > Le 28 décembre 2012 à 12:29, Itamar Syn-Hershko [itamar@code972.com](mailto:itamar@code972.com) a > écrit : > > Can't you do that by adding ES via Maven to your project, and attach > sources? IIRC this worked for me before > > On Fri, Dec 28, 2012 at 1:18 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote: > > Hi there, > > This a question a little bit outside ES scope, but not so far... > > I'm trying to play with IntelliJ (instead of Eclipse) for Elasticsearch. > Everything is fine when I compile/test 0.20 branch in IntelliJ. > > My problem comes when I try to have 2 maven projects in the same > workspace (I should say IntelliJ project): > > - Elasticsearch (branch 0.20) > - Spore Elasticsearch [https://github.com/dadoonet/spore-elasticsearch](https://github.com/dadoonet/spore-elasticsearch)project > > When I launch tests from spore project, I got the following errors when > starting ES Nodes (in Java): > > java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonParser > at > org.elasticsearch.common.xcontent.XContentType$3.xContent(XContentType.java:85) > at > org.elasticsearch.common.xcontent.XContentFactory.xContent(XContentFactory.java:110) > ... > > I think it's only a configuration problem as Jackson is shaded in > elasticsearch jar and does not have this class in the original package. How > do you setup things in IntelliJ to add breakpoints in Elasticsearch when > launching tests from another project? > > Sorry to be a little bit outside the ES scope. > > -- > David Pilato > [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) > [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > -- > > -- > > -- > David Pilato > [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) > [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > -- -- ---
**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:** [December 28, 2012, 2:12pm UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/5 "2012-12-28T14:12:55Z")
I was wondering if it's a goog idea to shade libraries when building the artifact instead of doing this in the generate-resources phase? What can be done (I will check that), is to shade all libraries in the generate-resources phase into the target dir. So it will be available when compiling and that way, on the ES project, imports will be done on the target package not on the original one. I don't know yet if it can be done, either if it's a best practice or not. I will try it. Le 28 décembre 2012 à 14:50, Itamar Syn-Hershko [itamar@code972.com](mailto:itamar@code972.com) a écrit : > Yeah, I know, tried that too with a few hacks but it kept confusing IntelliJ. > > My workflow is to have ES open in another IntelliJ instance and whenever I > need to change ES I change it in that other instance, do mvn install and have > the other IntelliJ instance import it again. > > Visual Studio allows you to do that, I just couldn't figure out how this can > be done with IntelliJ (yet?). > > On Fri, Dec 28, 2012 at 3:32 PM, David Pilato \<[david@pilato.fr](mailto:david@pilato.fr) > [mailto:david@pilato.fr](mailto:david@pilato.fr) \> wrote: > > > > Thanks Itamar, It works fine without importing ES project. > > > > The fact is I can not modify ES source code directly this way. But, it's > > probably a bad practice to launch tests from another project than from ES > > project itself! > > > > Thanks again. > > > > Le 28 décembre 2012 tel:2012 à 12:29, Itamar Syn-Hershko \< > > [itamar@code972.com](mailto:itamar@code972.com) [mailto:itamar@code972.com](mailto:itamar@code972.com) \> a écrit : > > > > ``` > > > > > Can't you do that by adding ES via Maven to your project, and > > > > > attach sources? IIRC this worked for me before > > > > ``` > > > > > ``` > > > On Fri, Dec 28, 2012 at 1:18 PM, David Pilato > > > > > > ``` > > > > > > \<[david@pilato.fr](mailto:david@pilato.fr) [mailto:david@pilato.fr](mailto:david@pilato.fr) \> wrote: > > > \> \> \> \> Hi there, > > > > > > > ``` > > > > This a question a little bit outside ES scope, but not so far... > > > > > > > > I'm trying to play with IntelliJ (instead of Eclipse) for > > > > > > > > ``` > > > > > > > > Elasticsearch. > > > > Everything is fine when I compile/test 0.20 branch in IntelliJ. > > > > > > > > ``` > > > > My problem comes when I try to have 2 maven projects in the same > > > > > > > > ``` > > > > > > > > workspace (I should say IntelliJ project): > > > > - Elasticsearch (branch 0.20) > > > > - Spore Elasticsearch > > > > [https://github.com/dadoonet/spore-elasticsearch](https://github.com/dadoonet/spore-elasticsearch) project > > > > > > > > ``` > > > > When I launch tests from spore project, I got the following errors > > > > > > > > ``` > > > > > > > > when starting ES Nodes (in Java): > > > > > > > > ``` > > > > java.lang.NoClassDefFoundError: > > > > > > > > ``` > > > > > > > > com/fasterxml/jackson/core/JsonParser > > > > at > > > > org.elasticsearch.common.xcontent.XContentType$3.xContent(XContentType.java:85) > > > > at > > > > org.elasticsearch.common.xcontent.XContentFactory.xContent(XContentFactory.java:110) > > > > ... > > > > > > > > ``` > > > > I think it's only a configuration problem as Jackson is shaded in > > > > > > > > ``` > > > > > > > > elasticsearch jar and does not have this class in the original package. > > > > How do you setup things in IntelliJ to add breakpoints in Elasticsearch > > > > when launching tests from another project? > > > > > > > > ``` > > > > Sorry to be a little bit outside the ES scope. > > > > > > > > -- > > > > David Pilato > > > > http://www.scrutmydocs.org/ > > > > http://dev.david.pilato.fr/ > > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > > > > > > > -- > > > > > > > > > > > > > > > > > > > ``` > > > > > > ``` > > > -- > > > > > > ``` > > > > > > > > > > > > -- > > David Pilato > > [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) > > [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > > > -- > > > > > > > -- -- David Pilato [http://www.scrutmydocs.org/](http://www.scrutmydocs.org/) [http://dev.david.pilato.fr/](http://dev.david.pilato.fr/) Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs -- ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [December 29, 2012, 5:26pm UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/6 "2012-12-29T17:26:18Z")
Hey David, strange, I haven't seen a "java.lang.NoClassDefFoundError" yet. I guess the IDE test classloader is fooled by the Maven-based shading for the class jar artifact, this conflicts with the Jackson sources in the IDE classpath. As long as it does not rely on the shaded class jar artifact, there is no chance to trace the real class name of shaded libs. During my work on a modularized ES codebase, I had to decide where to shade dependencies. I added the shading on a global level just as an add-on jar, to deploy a special ES node artifact. If it were on submodule levels, IDEs got confused. Because the shaded ES artifact is minimized, IDEs may not get alarmed when unused classes were silently dropped from the jar artifact in the Maven repo. It's a headache to reuse Guava, Netty, Jackson etc. when developing apps that build upon ES. I am also having a hard time to understand Eclipse and IntelliJ with their non-Maven strategies. Netbeans has the fewest flaws in ES testing IMHO, it just uses Maven surefire for testing. Just my 2p. Jörg -- ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:58am UTC](https://discuss.elastic.co/t/intellij-settings-for-elasticsearch-jar-shading-issue/10191/7 "2017-07-06T02:58:13Z")