Breaking changes in 7.9
editBreaking changes in 7.9
editThis section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 7.9.
See also What’s new in 7.16 and Release notes.
Indices changes
editElasticsearch includes built-in index templates for logs-*-*
and metrics-*-*
.
Details
In 7.9, Elasticsearch added built-in index templates for the metrics-*-*
and
logs-*-*
index patterns, each with a priority of 100
.
Elastic Agent uses these templates to
create data streams.
Impact
If you use Elastic Agent, assign your index templates a priority
lower than 100
to avoid overriding the built-in templates.
Otherwise, to avoid accidentally applying the built-in templates, use a
non-overlapping index pattern or assign templates with an overlapping pattern a
priority
higher than 100
.
For example, if you don’t use Elastic Agent and want to use a template for the
logs-*
index pattern, assign your template a priority of 200
. This ensures
your template is applied instead of the built-in template for logs-*-*
.
To disable all built-in index and component templates, set
stack.templates.enabled
to false
in elasticsearch.yml
before start up. If the templates already exist, this setting ensures Elasticsearch does
not recreate the built-in templates after deletion.
Script cache changes
editThe script.cache.max_size
setting is deprecated.
Details
The script.cache.max_size
setting is deprecated. In Elasticsearch 8.0.0, this is
set per-context.
Impact
To avoid deprecation warnings, discontinue use of the script.cache.max_size
setting. You may use script.context.$CONTEXT.cache_max_size
for the particular context.
For example, for the ingest
context, use script.context.ingest.cache_max_size
.
The script.cache.expire
setting is deprecated.
Details
The script.cache.expire
setting is deprecated. In Elasticsearch 8.0.0, this is
set per-context.
Impact
To avoid deprecation warnings, discontinue use of the script.cache.expire
setting. You may use script.context.$CONTEXT.cache_expire
for the particular context.
For example, for the update
context, use script.context.update.cache_expire
.
The script.max_compilations_rate
setting is deprecated.
Details
The script.max_compilations_rate
setting is deprecated. In Elasticsearch 8.0.0, this is
set per-context.
Impact
To avoid deprecation warnings, discontinue use of the script.max_compilations_rate
setting. You may use script.context.$CONTEXT.max_compilations_rate
for the particular
context. For example, for the processor_conditional
context, use
script.context.processor_conditional.max_compilations_rate
.
Mapping actions have been deprecated for the create_doc
, create
, index
and write
privileges.
Details
In Elasticsearch 8.0.0, the following privileges will no longer allow users to
explicitly update the mapping of an index:
-
create_doc
-
create
-
index
-
write
Additionally, in Elasticsearch 8.0.0, the following privileges will no longer allow users to dynamically update the mapping of an index during indexing or ingest:
-
create_doc
-
create
-
index
These privileges will continue to allow mapping actions on indices (but not on data streams) until Elasticsearch 8.0.0. However, deprecation warnings will be returned.
Impact
To allow users to explicitly update the mapping of an index,
grant the manage
privilege.
To dynamically update the mapping of an index during indexing or
ingest, grant the auto_configure
privilege and use index templates. This lets
you dynamically update the index mapping based on the template’s mapping configuration.
Settings changes
editAutomatically importing dangling indices is disabled by default.
Details
Automatically importing dangling indices into the cluster
is unsafe and is now disabled by default. This feature will be removed entirely
in Elasticsearch 8.0.0.
Impact
Use the Dangling indices API to list, delete or import
any dangling indices manually.
Alternatively you can enable automatic imports of dangling indices, recovering
the unsafe behaviour of earlier versions, by setting
gateway.auto_import_dangling_indices
to true
. This setting is deprecated
and will be removed in Elasticsearch 8.0.0. We do not recommend using this setting.
Several node role settings are deprecated.
Details
The following node role settings are now deprecated:
-
node.data
-
node.ingest
-
node.master
-
node.ml
-
node.remote_cluster_client
-
node.transform
-
node.voting_only
Use the node.roles
setting instead.
If you used the deprecated node role settings on a 7.13 or later cluster, you
will have a deprecation log message on
each of your nodes indicating the exact replacement value for node.roles
.
Impact
To avoid deprecation warnings, discontinue use of the deprecated settings.