I have a ES cluster in data center in France, I want to attach node to the
cluster from data center in Poland. Network statistics between two servers
are the following: ping ~35ms, transfer ~80Mbit/s
The problem is that while relocating shard (120GB) at random point I get
closed channel exceptions and time-outs even through the connection between
hosts seems to be stable (ping works, other apps as well). Suddenly
connections with node from which I copy shard is lost, and connection with
cluster clients is lost. What is strange that other nodes with which I lost
connection are not aware of that and continue working like nothing
happened. I have seen that in issue
https://github.com/elasticsearch/elasticsearch/issues/2733 this problem was
fixed, but would it help in my situation? If network error occur would
relocating shard be resumed or restarted from scratch? Relocating shard
takes about 3 hours, so if my network connection cannot sustain such long
transfer is there any sense in attaching node to cluster?
I user ES version 0.20.4
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