I have ten disks per node,and I don't know what value I should set to "hadoop.tmp.dir". Some said this property refers to a location in local disk while some other said it refers to a directory in HDFS. I'm confused, who can explain it ?
I want to spread I/O since I have ten disks per node, so should I set a comma-separated list of directories (which are on different disks) to "hadoop.tmp.dir" ?
