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Improve allocation-disabling instructions (#30248) 

Clarify the “one minute” in the instructions to disable the shard allocation
when doing maintenance to say that it is configurable.
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David Turner 2018-05-29 08:34:20 +01:00 committed by GitHub
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commit 89869a2d0d
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10
docs/reference/upgrade/disable-shard-alloc.asciidoc
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@ -1,8 +1,10 @@
When you shut down a node, the allocation process waits for one minute
before starting to replicate the shards on that node to other nodes
in the cluster, causing a lot of wasted I/O. You can avoid racing the clock
by disabling allocation before shutting down the node:
When you shut down a node, the allocation process waits for
`index.unassigned.node_left.delayed_timeout` (by default, one minute) before
starting to replicate the shards on that node to other nodes in the cluster,
which can involve a lot of I/O. Since the node is shortly going to be
restarted, this I/O is unnecessary. You can avoid racing the clock by disabling
allocation before shutting down the node:
[source,js]
--------------------------------------------------