# Compilation Errors **URL:** \ **Category:** Elasticsearch\ **Created:** [December 5, 2011, 5:50pm UTC](https://discuss.elastic.co/t/compilation-errors/6069 "2011-12-05T17:50:27Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![pulkitsinghal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pulkitsinghal/32/802_2.png) [@pulkitsinghal](https://discuss.elastic.co/u/pulkitsinghal)\ **Post date:** [December 5, 2011, 5:50pm UTC](https://discuss.elastic.co/t/compilation-errors/6069/1 "2011-12-05T17:50:27Z")
I was a bit surprised when ES downloaded the gradle binary required to run the build but that further validates how much thought and effort has been put behind making everything smooth ... kudos! What is my motivation behind building from source? I want to get involved and understand the core in order to contribute some equally great features back to to the source 🙂 But something is off as I am seeing compilation problems like: elasticsearch/master/modules/elasticsearch/src/main/java/org/ elasticsearch/common/Strings.java:24: package org.elasticsearch.common.trove.set.hash does not exist import org.elasticsearch.common.trove.set.hash.THashSet; ... 100 errors FAILURE: Build failed with an exception. \* What went wrong: Execution failed for task ':elasticsearch:compileJava'. Cause: Compile failed; see the compiler error output for details. I did a vanilla clone of the master repo, but I've been known to make mistakes ... any suggestions on what a newbie might do differently to make this work? ---
**Author:** ![pulkitsinghal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pulkitsinghal/32/802_2.png) [@pulkitsinghal](https://discuss.elastic.co/u/pulkitsinghal)\ **Post date:** [December 5, 2011, 6:13pm UTC](https://discuss.elastic.co/t/compilation-errors/6069/2 "2011-12-05T18:13:51Z")
Nevermind, I suppose where maven is involved, it is often best to simply retry 🙂 The 2nd time it ran to completion, I don't know why it didn't complain about the missing download the 1st time ... _shrug_ Download [http://elasticsearch.googlecode.com/svn/maven/org/elasticsearch/es-trove/3.0.0/es-trove-3.0.0.jar](http://elasticsearch.googlecode.com/svn/maven/org/elasticsearch/es-trove/3.0.0/es-trove-3.0.0.jar) Thanks! - Pulkit On Dec 5, 9:50 am, pulkitsinghal [pulkitsing...@gmail.com](mailto:pulkitsing...@gmail.com) wrote: > I was a bit surprised when ES downloaded the gradle binary required to > run the build but that further validates how much thought and effort > has been put behind making everything smooth ... kudos! > > What is my motivation behind building from source? I want to get > involved and understand the core in order to contribute some equally > great features back to to the source 🙂 > > But something is off as I am seeing compilation problems like: > elasticsearch/master/modules/elasticsearch/src/main/java/org/ > elasticsearch/common/Strings.java:24: > package org.elasticsearch.common.trove.set.hash does not exist > import org.elasticsearch.common.trove.set.hash.THashSet; > ... > 100 errors > FAILURE: Build failed with an exception. > \* What went wrong: > Execution failed for task ':elasticsearch:compileJava'. > Cause: Compile failed; see the compiler error output for details. > > I did a vanilla clone of the master repo, but I've been known to make > mistakes ... any suggestions on what a newbie might do differently to > make this work? ---
**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, 3:46am UTC](https://discuss.elastic.co/t/compilation-errors/6069/3 "2017-07-06T03:46:23Z")