Re: About the name of "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir"

Hi Huxiaodong! Thanks for your email. "dfs.namenode.checkpoint.dir" is used in a lower level abstraction (called FSImage) : https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java#L1374 . Incidentally to have

About the name of "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir"

Hello, I think "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir" is used for secondaryNameNode. So I think "dfs.secondary.namenode.checkpoint.dir" and "dfs.secondary.namenode.checkpoint.edits.dir" is better than "dfs.namenode.checkpoint.dir" and