Vanilla hadoop, slaves datanode log

2013-12-18 04:47:05,867 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:06,869 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:07,870 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:08,871 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:09,872 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:10,874 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:11,875 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:12,876 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:13,877 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:14,879 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: test-master2T-001/10.0.0.2:8020. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2013-12-18 04:47:14,880 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: java.net.ConnectException: Call to test-master2T-001/10.0.0.2:8020 failed on connection exception: java.net.ConnectException: Connection refused
    at org.apache.hadoop.ipc.Client.wrapException(Client.java:1142)
    at org.apache.hadoop.ipc.Client.call(Client.java:1118)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
    at com.sun.proxy.$Proxy5.sendHeartbeat(Unknown Source)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.offerService(DataNode.java:1031)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.run(DataNode.java:1588)
    at java.lang.Thread.run(Thread.java:724)
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:708)
    at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:511)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:481)
    at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:457)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:583)
    at org.apache.hadoop.ipc.Client$Connection.access$2200(Client.java:205)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1249)
    at org.apache.hadoop.ipc.Client.call(Client.java:1093)
    ... 5 more