Indices changesedit

: is no longer allowed in index nameedit

Due to cross-cluster search using : to separate a cluster and index name, index names may no longer contain :.

index.unassigned.node_left.delayed_timeout may no longer be negativeedit

Negative values were interpreted as zero in earlier versions but are no longer accepted.

_flush and _force_merge will no longer refreshedit

In previous versions issuing a _flush or _force_merge (with flush=true) had the undocumented side-effect of refreshing the index which made new documents visible to searches and non-realtime GET operations. From now on these operations don’t have this side-effect anymore. To make documents visible an explicit _refresh call is needed unless the index is refreshed by the internal scheduler.