6261b0
@@ -1741,14 +1741,14 @@
private static void populateLlapDaemonVarsSet(Set<String> llapDaemonVarsSetLocal
         "How many rows with the same key value should be cached in memory per smb joined table."),
     HIVEGROUPBYMAPINTERVAL("hive.groupby.mapaggr.checkinterval", 100000,
         "Number of rows after which size of the grouping keys/aggregation classes is performed"),
-    HIVEMAPAGGRHASHMEMORY("hive.map.aggr.hash.percentmemory", (float) 0.99,
+    HIVEMAPAGGRHASHMEMORY("hive.map.aggr.hash.percentmemory", (float) 0.5,
         "Portion of total memory to be used by map-side group aggregation hash table"),
     HIVEMAPJOINFOLLOWEDBYMAPAGGRHASHMEMORY("hive.mapjoin.followby.map.aggr.hash.percentmemory", (float) 0.3,
         "Portion of total memory to be used by map-side group aggregation hash table, when this group by is followed by map join"),
     HIVEMAPAGGRMEMORYTHRESHOLD("hive.map.aggr.hash.force.flush.memory.threshold", (float) 0.9,
         "The max memory to be used by map-side group aggregation hash table.\n" +
         "If the memory usage is higher than this number, force to flush data"),
-    HIVEMAPAGGRHASHMINREDUCTION("hive.map.aggr.hash.min.reduction", (float) 0.5,
+    HIVEMAPAGGRHASHMINREDUCTION("hive.map.aggr.hash.min.reduction", (float) 0.99,
         "Hash aggregation will be turned off if the ratio between hash  table size and input rows is bigger than this number. \n" +
         "Set to 1 to make sure hash aggregation is never turned off."),
     HIVEMULTIGROUPBYSINGLEREDUCER("hive.multigroupby.singlereducer", true,
