diff --git a/.gitignore b/.gitignore
index 998287d771..a5d69d094c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,11 @@
 .settings
 target
 build
+
+# External tool builders
+*/.externalToolBuilders
+*/maven-eclipse.xml
+
 hadoop-common-project/hadoop-kms/downloads/
 hadoop-hdfs-project/hadoop-hdfs/downloads
 hadoop-hdfs-project/hadoop-hdfs-httpfs/downloads