1) changed the log page flush option from force(true) to force(false), 2) changed default group commit time from 1 to 10 ms in installer configuration file, 3) fixed a bug which makes the logPartitionSize property be negative number, 4) removed a redundant file, LogUtil.
diff --git a/asterix-installer/src/main/resources/conf/asterix-configuration.xml b/asterix-installer/src/main/resources/conf/asterix-configuration.xml
index e542efd..9f531c0 100644
--- a/asterix-installer/src/main/resources/conf/asterix-configuration.xml
+++ b/asterix-installer/src/main/resources/conf/asterix-configuration.xml
@@ -126,7 +126,7 @@
 
 	<property>
 		<name>txn.log.groupcommitinterval</name>
-		<value>1</value>
+		<value>10</value>
 		<description>The group commit wait time in milliseconds. (Default =
 			"10" // 0.1ms)
 		</description>