I am trying to snapshot and restore big index with repository-hdfs-5.4.2 plugin. I got 33.3 mb/s on snapshot and got 640 mb/s on restore. Is it normal that snapshot is about 20 times slower than restore?
Is there any way to speed up the snapshot operation or explain why it is so slow?
I've changed the setting for repository with : max_snapshot_bytes_per_sec = 500mb and max_restore_bytes_per_sec = 500mb , so it shouldn't be the limit.
ES Version : 5.4.2
We have 3 physical machines, 1 master node and 4 data node for each machine.
( 3 master nodes and 12 data nodes. )