Update shards_allocation.asciidoc
Slight language and consistency updates in shard balancing heuristics
@@ -101,18 +101,18 @@ Specify when shard rebalancing is allowed:
=== Shard Balancing Heuristics
The following settings are used together to determine where to place each
-shard. The cluster is balanced when no allowed action can bring the weights
-of each node closer together by more than the `balance.threshold`.
+shard. The cluster is balanced when no allowed rebalancing operation can bring the weight
+of any node closer to the weight of any other node by more than the `balance.threshold`.
`cluster.routing.allocation.balance.shard`::
- Defines the weight factor for shards allocated on a node
+ Defines the weight factor for the total number of shards allocated on a node
(float). Defaults to `0.45f`. Raising this raises the tendency to
equalize the number of shards across all nodes in the cluster.
`cluster.routing.allocation.balance.index`::
- Defines a factor to the number of shards per index allocated
+ Defines the weight factor for the number of shards per index allocated
on a specific node (float). Defaults to `0.55f`. Raising this raises the
tendency to equalize the number of shards per index across all nodes in
the cluster.
