see issues on github
Upgrading from 0.18 requires issuing a full flush of all the indices in the cluster (
) before shutting down the cluster, with no indexing operations happening after the flush.
The local gateway state structure has changed, a backup of the state files is created when upgrading, they can then be used to downgrade back to 0.18. Don’t downgrade without using them.
Avoid placing a shard replica on the same machine as shard itself (
GC logging: Enable back automatic gc logging based on thresholds (even if last gc is not available) (
: Don’t wait for new mappings to be applied on the cluster by default (
flag to return all data (
Transport buffer overrun can happen because of byte buffer reading optimization introduced in 0.19.0.RC1 (