diff --git a/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java b/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
index 662ece1c907b..94bbddb4b8fe 100644
--- a/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
+++ b/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
@@ -1793,7 +1793,7 @@ public static enum ConfVars {
             "projected the majority of columns from these table. This optimization trims fields at root of tree and " +
             "then joins back affected tables at top of tree to get rest of columns. " +
             "Set this to 0.0 to disable this optimization or increase it for more aggressive optimization."),
-    AGGR_JOIN_TRANSPOSE("hive.transpose.aggr.join", false, "push aggregates through join"),
+    AGGR_JOIN_TRANSPOSE("hive.transpose.aggr.join", true, "push aggregates through join"),
     AGGR_JOIN_TRANSPOSE_UNIQUE("hive.transpose.aggr.join.unique", true, "push aggregates through join(s) in "
         + "case data is regrouped on a previously unique column"),
     SEMIJOIN_CONVERSION("hive.optimize.semijoin.conversion", true, "convert group by followed by inner equi join into semijoin"),