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.
msearch should accept a leading n (
Date Histogram Facet: Add
Flush: Add a specific thread pool for flush operations (scheduled and
Translog Flush: When disabling flush and enabling it again, scheduled flush stops executing (
Real time get on a stored _size field does not return its value (
query never returns (
Orderly shutdown with unicast discovery might cause the shutdown node to still be part of the election process (
NullPointerException when asking for null valued json field when fetching search request (
Multi level parent/child mapping and search fails (
Also see release notes for: