Separates cluster state publishing from applying cluster states:
- ClusterService is split into two classes MasterService and ClusterApplierService. MasterService has the responsibility to calculate cluster state updates for actions that want to change the cluster state (create index, update shard routing table, etc.). ClusterApplierService has the responsibility to apply cluster states that have been successfully published and invokes the cluster state appliers and listeners.
- ClusterApplierService keeps track of the last applied state, but MasterService is stateless and uses the last cluster state that is provided by the discovery module to calculate the next prospective state. The ClusterService class is still kept around, which now just delegates actions to ClusterApplierService and MasterService.
- The discovery implementation is now responsible for managing the last cluster state that is used by the consensus layer and the master service. It also exposes the initial cluster state which is used by the ClusterApplierService. The discovery implementation is also responsible for adding the right cluster-level blocks to the initial state.
- NoneDiscovery has been renamed to TribeDiscovery as it is exclusively used by TribeService. It adds the tribe blocks to the initial state.
- ZenDiscovery is synchronized on state changes to the last cluster state that is used by the consensus layer and the master service, and does not submit cluster state update tasks anymore to make changes to the disco state (except when becoming master).
Control flow for cluster state updates is now as follows:
- State updates are sent to MasterService
- MasterService gets the latest committed cluster state from the discovery implementation and calculates the next cluster state to publish
- MasterService submits the new prospective cluster state to the discovery implementation for publishing
- Discovery implementation publishes cluster states to all nodes and, once the state is committed, asks the ClusterApplierService to apply the newly committed state.
- ClusterApplierService applies state to local node.
- Getters for DateHisto `interval` and `offset` should return a
long, not double
- Add getter for the filter in a FilterAgg
- Add getters for subaggs / pipelines in base AggregationBuilder
Allow the `Context` to be used in the builder function used within ConstructingObjectParser.
This facilitates scenarios where a constructor argument comes from a URL parameter, or from document id.
The tribe service can take a while to initialize, depending on how many cluster it needs to connect to. This change moves writing the ports file used by tests to before the tribe service is started.
This adds the `index.mapping.single_type` setting, which enforces that indices
have at most one type when it is true. The default value is true for 6.0+ indices
and false for old indices.
Relates #15613
This commit fixes some inconsistencies in long GC disruption where we
mixed stopping and suspending when the action we are performing on
threads is suspending which is distinct from stopping a thread.
The one argument ctor for `Script` creates a script with the
default language but most usages of are for testing and either
don't care about the language or are for use with
`MockScriptEngine`. This replaces most usages of the one argument
ctor on `Script` with calls to `ESTestCase#mockScript` to make
it clear that the tests don't need the default scripting language.
I've also factored out some copy and pasted script generation
code into a single place. I would have had to change that code
to use `mockScript` anyway, so it was easier to perform the
refactor.
Relates to #16314
In case of a Cross Cluster Search, the coordinating node should split the original indices per cluster, and send over to each cluster only its own set of original indices, rather than the set taken from the original search request which contains all the indices.
In fact, each remote cluster should not be aware of the indices belonging to other remote clusters.
We can leak disrupted threads here since we never wait for them to
complete after freeing them from their loops. This commit addresses this
by joining on disrupted threads, and addresses fallout from trying to
join here.
Relates #24338
This test can run into a split-brain situation as minimum_master_nodes is not properly set. To prevent this, make sure that at least one of the two
master nodes that are initially started has minimum_master_nodes correctly set.
When an index is shrunk using the shrink APIs, the shrink operation adds
some internal index settings to the shrink index, for example
`index.shrink.source.name|uuid` to denote the source index, as well as
`index.routing.allocation.initial_recovery._id` to denote the node on
which all shards for the source index resided when the shrunken index
was created. However, this presents a problem when taking a snapshot of
the shrunken index and restoring it to a cluster where the initial
recovery node is not present, or restoring to the same cluster where the
initial recovery node is offline or decomissioned. The restore
operation fails to allocate the shard in the shrunken index to a node
when the initial recovery node is not present, and a restore type of
recovery will *not* go through the PrimaryShardAllocator, meaning that
it will not have the chance to force allocate the primary to a node in
the cluster. Rather, restore initiated shard allocation goes through
the BalancedShardAllocator which does not attempt to force allocate a
primary.
This commit fixes the aforementioned problem by not requiring allocation
to occur on the initial recovery node when the recovery type is a
restore of a snapshot. This commit also ensures that the internal
shrink index settings are recognized and not archived (which can trip an
assertion in the restore scenario).
Closes#24257
This code removes a few lines of dead code from ScriptedMetricAggregationBuilder.
Just completely dead code, it adds things to a Set that is then not used in any way.
Docs: rewrite description of `bool`'s `should`
Rewrites the description of the `bool` query's `should`
clauses so it is (hopefully) more clear what the defaults
for `minimum_should_match` are.
There is still an `[IMPORTANT]` section about `minimum_should_match`
in a filter context. I think it is worth keeping because it is, well,
important.
Closes#23831
Another step down the road to dropping the
lucene-analyzers-common dependency from core.
Note that this removes some tests that no longer compile from
core. I played around with adding them to the analysis-common
module where they would compile but we already test these in
the tests generated from the example usage in the documentation.
I'm not super happy with the way that `requriesAnalysisSettings`
works with regards to plugins. I think it'd be fairly bug-prone
for plugin authors to use. But I'm making it visible as is for
now and I'll rethink later.
A part of #23658
Currently InternalPercentilesBucket#percentile() relies on the percent array passed in
to be in sorted order. This changes the aggregation to store an internal lookup table that
is constructed from the percent/percentiles arrays passed in that can be used to look up
the percentile values.
Closes#24331
The bats tests are descructive and must be run as root. This is a
horrible combination on any sane system but perfectly fine to do
in a VM. This change modifies the tests so they revuse to start
unless they are in an environment with an `/etc/is_vagrant_vm`
file. The Vagrantfile creates it on startup.
Closes#24137
In case of a bridge partition, shard allocation can fail "index.allocation.max_retries" times if the master is the super-connected node and recovery
source and target are on opposite sides of the bridge. This commit adds a reroute with retry_failed after healing the network partition so that the
ensureGreen check succeeds.
StreamInput has methods such as readVInt that perform sanity checks on the data using assertions,
which will catch bad data in tests but provide no safety when running as a node without assertions
enabled. The use of assertions also make testing with invalid data difficult since we would need
to handle assertion errors in the code using the stream input and errors like this should not be
something we try to catch. This commit introduces a flag that will throw an IOException instead of
using an assertion.
The percolator doesn't close the IndexReader of the memory index any more.
Prior to 2.x the percolator had its own SearchContext (PercolatorContext) that did this,
but that was removed when the percolator was refactored as part of the 5.0 release.
I think an alternative way to fix this is to let percolator not use the bitset and fielddata caches,
that way we prevent the memory leak.
Closes#24108
Most of these settings should always be pulled from the repository
settings. A couple were leftover that should be moved to client
settings. The path style access setting should be removed altogether.
This commit adds deprecations for all of these existing settings, as
well as adding new client specific settings for max retries and
throttling.
relates #24143
This commit replaces two alternating regular expressions (that is,
regular expressions that consist of the form a|b where a and b are
characters) with the equivalent regular expression rewritten as a
character class (that is, [ab]) The reason this is an improvement is
because a|b involves backtracking while [ab] does not.
Relates #24316
Creates a new task `namingConventionsMain`, that runs on the
`buildSrc` and `test:framework` projects and fails the build if
any of the classes in the main artifacts are named like tests or
are non-abstract subclasses of ESTestCase.
It also fixes the three tests that would cause it to fail.
This commit adds a link to the minimum master nodes section of the
important settings docs from the Zen discovery docs to clarify the
meaning and importance of setting minimum master nodes to a quorum of
master-eligible nodes.
Relates #24311
It looks like auto-complete gave us a nasty surprise here with
Logger#equals being invoked instead of Logger#error swallowing the
absolute worst-possible level of a log message. This commit fixes the
invocation.
`tests.enable_mock_modules` is a documented but unrespected / unused
option to disable all mock modules / pluings during test runs. This
will basically site-step mock assertions like check-index on shard closing.
This can speed up test-execution dramatically on nodes with slow disks etc.
Relates to #24304
Workday recently open-sourced our internal Scala wrapper for the Elasticsearch REST API. We plan to continue maintaining the library and use it in our products. Thought it would be a good idea to link it here in case anyone else is interested in using it!
This commit adds a compileTemplate method to the ScriptService.
Eventually this will be used to easily cutover all consumers to a new
TemplateService.
relates #16314
Replaces LambdaMetaFactory with LambdaBootstrap, a custom solution for lambdas in Painless using a design similar to LambdaMetaFactory, but allows for custom adaptation of types which recent changes to LambdaMetaFactory no longer allowed.
The `count` value in the stats aggregation represents a simple doc count
that doesn't require a formatted version. We didn't render an "as_string"
version for count in the rest response, so the method should also be
removed in favour of just using String.valueOf(getCount()) if a string
version of the count is needed.
Closes#24287
Yannick Welsch
Toby McLaughlin
Zachary Tong
Ryan Ernst
Nik Everett
Ali Beyad
Tim Vernum
Clinton Gormley
Adrien Grand
Jason Tedor
Koen De Groote
Luca Cavanna
Martijn van Groningen
Christoph Büscher
Jay Modi
Till Backhaus
Danilo Akamine
Simon Willnauer
Bodecker DellaMaria
Guillaume Le Floch
Colin Goodheart-Smithe
Jack Conradson