Minor changes.

Author: tdas

core/src/test/resources/log4j.properties

@@ -16,7 +16,7 @@
 #
 
 # Set everything to be logged to the file core/target/unit-tests.log
-log4j.rootCategory=DEBUG, file
+log4j.rootCategory=INFO, file
 log4j.appender.file=org.apache.log4j.FileAppender
 log4j.appender.file.append=false
 log4j.appender.file.file=target/unit-tests.log

core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala

@@ -91,8 +91,12 @@ class BlockManagerSuite extends FunSuite with Matchers with BeforeAndAfter
     conf.set("spark.driver.port", boundPort.toString)
     conf.set("spark.storage.unrollFraction", "0.4")
     conf.set("spark.storage.unrollMemoryThreshold", "512")
+
+    // for block replication test, to make a replication attempt to inactive store fail fast
     conf.set("spark.core.connection.ack.wait.timeout", "1")
+    // for block replication test, to make cached peers refresh frequently
     conf.set("spark.storage.cachedPeersTtl", "10")
+
     master = new BlockManagerMaster(
       actorSystem.actorOf(Props(new BlockManagerMasterActor(true, conf, new LiveListenerBus))),
       conf, true)