hadoop遠程調試源碼

一、將下列信息填寫到hadoop-en.sh環境變量中，若是調試NameNode.

HADOOP_NAMENODE_OPTS="-agentlib:jdwp=transport=dt_socket,address=8888,server=y,suspend=y"

#HADOOP_SECONDARYNAMENODE_OPTS="-agentlib:jdwp=transport=dt_socket,address=8789,server=y,suspend=y"

#HADOOP_DATANODE_OPTS="-agentlib:jdwp=transport=dt_socket,address=8790,server=y,suspend=y"

#HADOOP_BALANCER_OPTS="-agentlib:jdwp=transport=dt_socket,address=8791,server=y,suspend=y"

#HADOOP_JOBTRACKER_OPTS="-agentlib:jdwp=transport=dt_socket,address=8792,server=y,suspend=y"

#HADOOP_TASKTRACKER_OPTS="-agentlib:jdwp=transport=dt_socket,address=8793,server=y,suspend=y"

二、打開Eclipse,設置文件如圖

三、按住Ctrl點進去便可看到NameNode源碼

四、Debug設置