http://blog.csdn.net/simonqian_vip/article/details/20358169 Hadoop1 和Hadoop2的区别
http://blog.csdn.net/yhc166188/article/details/78916873 Hadoop1 和Hadoop2的区别

https://my.oschina.net/u/189445/blog/661561 Hadoop Journal Node 作用

http://blog.csdn.net/dr_guo/article/details/50939537 Hadoop高可用集群（HA+JournalNode+zookeeper）

http://blog.csdn.net/androidlushangderen/article/details/48415073 YARN源码分析(四)-----Journalnode

https://www.cnblogs.com/nucdy/p/5892144.html Hadoop-2.X HA模式下的FSImage和EditsLog合并过程

http://blog.csdn.net/cnhk1225/article/details/50786785

http://blog.csdn.net/lipeng_bigdata/article/details/51277267 HDFS源码分析之FSImage文件内容（一）总体格式

https://www.linuxidc.com/Linux/2014-10/107934.htm Hadoop1.x和2.X的HDFS fsimage和edits文件运行机制对比
https://tech.meituan.com/namenode.html HDFS NameNode内存全景
http://jiangbo.me/blog/2012/10/18/hdfs-namenode-datastructure/ HDFS源码学习（1）——NameNode主要数据结构

http://blog.csdn.net/workformywork/article/details/18272621 Hadoop源码分析之NameNode的格式化
http://blog.csdn.net/workformywork/article/details/17764229 Hadoop源码分析之NameNode的启动与停止
http://www.cnblogs.com/foxmailed/p/4149219.html HDFS namenode 写edit log原理以及源码分析
https://www.cnblogs.com/f1194361820/p/6768623.html

http://blog.csdn.net/qa962839575/article/details/42748541
http://www.cnblogs.com/junrong624/p/3580477.html

http://blog.csdn.net/androidlushangderen/article/details/48415073

https://www.ibm.com/developerworks/cn/opensource/os-cn-hadoop-name-node/#icomments