Nhat bf4c3642b2 remove _primary and _replica shard preferences (#26791)
The shard preference _primary, _replica and its variants were useful
for the asynchronous replication. However, with the current impl, they
are no longer useful and should be removed.

Closes #26335
2017-10-08 11:03:06 -04:00

17 lines
721 B
Plaintext

[[breaking_70_cluster_changes]]
=== Cluster changes
==== `:` is no longer allowed in cluster name
Due to cross-cluster search using `:` to separate a cluster and index name,
cluster names may no longer contain `:`.
==== New default for `wait_for_active_shards` parameter of the open index command
The default value for the `wait_for_active_shards` parameter of the open index API
is changed from 0 to 1, which means that the command will now by default wait for all
primary shards of the opened index to be allocated.
==== Shard preferences `_primary`, `_primary_first`, `_replica`, and `_replica_first` are removed
These shard preferences are removed in favour of the `_prefer_nodes` and `_only_nodes` preferences.