We are using LVM on the Data nodes HDFS Volumes .Is this going to create latency in Read/Write .
We have observed that local to HDFS files copies are taking too much of time .especially when doing multiple copies.
Any thoughts on this ..
HWX doesn't recommend using lvm for the datanodes (overhead and no benefit).
You typically create a partition per disk (no raid) with the your FS directly on top.
FS typically are ext4 or xfs.
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