Breaking changes in 7.5
editBreaking changes in 7.5
editThis section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 7.5.
See also What’s new in 7.16 and Release notes.
Allocation deprecations
editThe cluster.routing.allocation.disk.include_relocations
setting is deprecated.
editThe cluster.routing.allocation.disk.include_relocations
cluster setting is now
deprecated. In future versions, Elasticsearch will account for the sizes of relocating
shards when making allocation decisions based on the disk usage of nodes in the
cluster.
Currently, you can set cluster.routing.allocation.disk.include_relocations
to
false
to disable this accounting. This can result in poor allocation decisions
that might overshoot watermarks and require significant work to correct.
To avoid deprecation warnings, discontinue use of the setting.
Search Changes
editStricter checking for wildcard queries on _index
editPreviously, a wildcard query on the _index
field matched directly against the
fully-qualified index name. Now, in order to match against remote indices like
cluster:index
, the query must contain a colon, as in cl*ster:inde*
. This
behavior aligns with the way indices are matched in the search endpoint.