Branch: refs/heads/master Home: https://github.com/hibernate/hibernate-search Commit: 51e1f43ad84522e3d0c803d157b72d74baa880ba https://github.com/hibernate/hibernate-search/commit/51e1f43ad84522e3d0c8... Author: Yoann Rodière <yoann(a)hibernate.org&gt; Date: 2017-05-16 (Tue, 16 May 2017) Changed paths: M elasticsearch/src/test/java/org/hibernate/search/elasticsearch/test/DefaultElasticsearchClientFactoryTest.java Log Message: ----------- HSEARCH-2721 Fix transient failures in DefaultElasticsearchClientFactoryTest.discovery Below is a description of the method I followed to check that the fix is effective. * run this shell code before making any change: function countFailures() { FAILURE=0 SUCCESS=0; while true do if eval "${@}" 1>/dev/null 2>&1 then (( ++ SUCCESS )) else (( ++ FAILURE )) fi echo "Success: $SUCCESS, failure: $FAILURE" done } mvn clean install -DskipTests=true countFailures mvn test -pl elasticsearch -rf elasticsearch "-Dtest=DefaultElasticsearchClientFactoryTest#discovery" * notice that for 50 runs, you get approximately 5 failures * apply the changes in this commit * run the same shell code again * notice that you don't get any failures even after 50 runs