correct code
DataXceiver.java 添加getBlockChecksumList函数，没有实现功能
correct code
DataXceiver.java
correct code
DataXceiver.java
Correct code
DataXceiver.java
RsyncCopy.data
Merge remote-tracking branch 'origin/master'

Conflicts:
	hdfs/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java
correct code
Merge remote-tracking branch 'origin/master'