Today when getting setting via an API like the cluster settings API,
complex settings are excluded (e.g.,
discovery.zen.ping.unicast.hosts). This commit adds these settings to
the output of such APIs.
Relates #20622
It currently returns something like:
```
"No feature for name [_siohgjoidfhjfihfg]"
```
Which is not the most understandable message, this changes it to be a
little more readable.
Resolves#10946
Today when executing the install plugin command without a plugin id, we
end up throwing an NPE because the plugin id is null yet we just keep
going (ultimatley we try to lookup the null plugin id in a set, the
direct cause of the NPE). This commit modifies the install command so
that a missing plugin id is detected and help is provided to the user.
Relates #20660
reindex-from-remote should ignore unknown fields so it is mostly
future compatible. This makes it ignore unknown fields by adding an
option to `ObjectParser` and `ConstructingObjectParser` that, if
enabled, causes them to ignore unknown fields.
Closes#20504
Many of our unit tests instantiate an `AllocationService`, which requires having a `GatewayAllocator`. Today almost all of our test use a class called `NoopGatewayAllocator` which does nothing, effectively leaving all shard assignments to the balanced allocator. This is sad as it means we test a system that behaves differently than our production logic in very basic things. For example, a started primary that is lost will be assigned to a node that didn't use to have it.
This PR removes `NoopGatewayAllocator` in favor of a new `TestGatewayAllocator` that inherits the standard `GatewayAllocator` and overrides shard information fetching to return information based on historical assignments the allocator has done. The only exception is `BalanceConfigurationTests` which does test only the balancer and I opted to not have it work around the `GatewayAllocator` being in it's way.
Changes the API of GatewayAllocator#applyStartedShards and
GatewayAllocator#applyFailedShards to take both a RoutingAllocation
and a list of shards to apply. This allows better mock allocators
to be created as being done in #20637.
Closes#20642
Removes the FailedRerouteAllocation class and StartedRerouteAllocation
class, as they were just wrappers for RerouteAllocation that stored
started and failed shards, but these started and failed shards can
be passed in directly to the methods that needed them, removing the
need for this wrapper class and extra level of indirection.
Closes#20626
When initializing a new index routing table, we make a decision where the primary shards should be recovered from. This can be an empty folder for new indices, a set of specific allocation ids for old indices or a snapshot. We currently allow callers of `IndexRoutingTable.initializeEmpty` to supply the source but also set it automatically if null is given. Sadly the current logic is reusing the supplied parameter to store the result of the automatic decision. This is flawed if some of the decision should be *different* between the different index shard (as the first decision that is maid sticks).
This commit fixes this but also simplifies the API to always make an automatic decision.
This was discovered while working on #20637 which strengthens the testing infra and caused this to bubble up. I put it as a separate commit to make sure it is not lost as part of a bigger test only PR.
Today we hold on to all possible tokenizers, tokenfilters etc. when we create
an index service on a node. This was mainly done to allow the `_analyze` API to
directly access all these primitive. We fixed this in #19827 and can now get rid of
the AnalysisService entirely and replace it with a simple map like class. This
ensures we don't create a gazillion long living objects that are entirely useless since
they are never used in most of the indices. Also those objects might consume a considerable
amount of memory since they might load stopwords or synonyms etc.
Closes#19828
When testing tribe nodes in an integration test, we should pass the classpath
plugins of the node down to the tribe client nodes. Without this the tribe client
nodes could be prevented from communicating with the tribes.
When an active shadow replica is reinitialized during primary promotion, the recovery stats that are used by the allocation decider settings `cluster.routing.allocation.node_concurrent_recoveries` and `cluster.routing.allocation.node_concurrent_incoming_recoveries` have to be updated.
If your native script needs to do some heavy computation on initialization,
the fact that we create a new one for every segment rather than for the whole
index could have a negative performance impact.
This commit changes the default behavior of `_flush` to block if other flushes are ongoing.
This also removes the use of `FlushNotAllowedException` and instead simply return immediately
by skipping the flush. Users should be aware if they set this option that the flush might or might
not flush everything to disk ie. no transactional behavior of some sort.
Closes#20569
Translog#read is a left-over from realtime-get that allows to read
from an arbitrary location in the transaction log. This method is unused
and can be replaced with snapshots in tests.
`index.routing.allocation.initial_recovery` is used with index shrinking to make sure the new index's primary is assigned to the node that holds a copy of each of the source index shards. Sadly with the introduction of `RecoverySource` a regression was introduced that limits the allocation of replicas of the new index.
Today when CLI tools are executed, logging statements can intentionally
or unintentionally be executed when logging is not configured. This
leads to log messages that the status logger is not configured. This
commit reworks logging configuration for CLI tools so that logging is
always configured.
Relates #20575
This commit removes `ByteSizeValue`'s methods that are duplicated (ex: `mbFrac()` and `getMbFrac()`) in order to only keep the `getN` form.
It also renames `mb()` -> `getMb()`, `kb()` -> `getKB()` in order to be more coherent with the `ByteSizeUnit` method names.
Adds a cat api endpoint: /_cat/templates and its more specific version, /_cat/templates/{name}.
It looks something like:
$ curl "localhost:9200/_cat/templates?v"
name template order version
sushi_california_roll *avocado* 1 1
pizza_hawaiian *pineapples* 1
pizza_pepperoni *pepperoni* 1
The specified version (only allows * globs) looks like:
$ curl "localhost:9200/_cat/templates/pizza*"
name template order version
pizza_hawaiian *pineapples* 1
pizza_pepperoni *pepperoni* 1
Partially specified columns:
$ curl "localhost:9200/_cat/templates/pizza*?v=true&h=name,template"
name template
pizza_hawaiian *pineapples*
pizza_pepperoni *pepperoni*
The help text:
$ curl "localhost:9200/_cat/templates/pizza*?help"
name | n | template name
template | t | template pattern string
order | o | template application order number
version | v | version
Closes#20467
This commit adds a new test TribeIT#testClusterStateNodes() to verify that the tribe node correctly reflects the nodes of the remote clusters it is connected to.
It also changes the existing tests so that they really use two remote clusters now.
IndexResponse#toString method outputs an error caused by the shards object needing to be wrapped into another object. It is fixed by calling a different variant of Strings.toString(XContent) which accepts a second boolean argument that makes sure that a new object is created before outputting ShardInfo. I didn't change ShardInfo#toString directly as whether it needs a new object or not very much depends on where it is printed out. IndexResponse seemed a specific case as the rest of the info were not json, hence the shards object was the first one, but it is usually not the case.
With the unified release process across the elastic stack, download
links for all products are changing. This change updates docs referring
to the old download and packages urls.
Note that this change also updates the plugin installation command as
the url for downloads is being changed to be consistent with that for
packages (both plural).
The serial collector is not suitable for running with a server
application like Elasticsearch and can decimate performance and lead to
cluster instability. This commit adds a bootstrap check to prevent usage
of the serial collector when Elasticsearch is running in production
mode.
Relates #20558
Today when acquiring a prefix logger for a logger info stream, we obtain
a new prefix logger per invocation. This can lead to contention on the
markers lock in the constructor of PrefixLogger. Usually this is not a
problem (because the vast majority of callers hold on to the logger they
obtain). Unfortunately, under heavy indexing with multiple threads, the
contention on the lock can be devastating. This commit modifies
LoggerInfoStream to hold on to the loggers it obtains to avoid
contending over the lock there.
Relates #20571
* Build: Remove old maven deploy support
This change removes the old maven deploy that we have in parallel to
maven-publish, and makes maven-publish fully work with publishing to
maven local. Using `gradle publishToMavenLocal` should be used to
publish to .m2.
Note that there is an unfortunate hack that means for
zip artifacts we must first create/publish a dummy pom file, and then
follow that with the real pom file. It would be nice to have the pom
file contains packaging=zip, but maven central then requires sources and
javadocs. But our zips are really just attached artifacts, so we already
set the packaging type to pom for our zip files. This change just works
around a limitation of the underlying maven publishing library which
silently skips attached artifacts when the packaging type is set to pom.
relates #20164closes#20375
* Remove unnecessary extra spacing
This change removes all guice interaction from Transport, HttpServerTransport,
HttpServer and TransportService. All these classes as well as their subclasses
or extended version configured via plugins are now created by using plain old
bloody java constructors. YAY!
Since #19975 we are aggressively failing with AssertionError when we catch an ACE
inside the InternalEngine. We treat everything that is neither a tragic even on
the IndexWriter or the Translog as a bug and throw an AssertionError. Yet, if the
engine hits an IOException on refresh of some sort and the IW doesn't realize it since
it's not fully under it's control we fail he engine but neither IW nor Translog are marked
as failed by tragic event while they are already closed.
This change takes the `failedEngine` exception into account and if it's set we know
that the engine failed by some other even than a tragic one and can continue.
This change also uses the `ReferenceManager#RefreshListener` interface in the engine rather
than it's concrete implementation.
Relates to #19975
Currently all the reroute-like methods of `AllocationService` return a result object of type `RoutingAllocation.Result`. The result object contains the new `RoutingTable` and `MetaData` plus an indication whether those were changed. The caller is then responsible of updating a cluster state with these. These means that things can easily go wrong and one can take one of these but not the other causing inconsistencies. We already have a utility method on the `ClusterState` builder that does but no one forces you to do so. Also 99% of the callers do the same thing: i.e., check if the result was changed and if so update the very same cluster state that was passed to `AllocationService`. This PR folds this pattern into `AllocationService` and changes almost all it's methods to return a new cluster state (potentially the original one). This saves some 500 lines of code.
The one exception here is the reroute API which executes allocation commands and potentially returns an explanation as well (next to the routing table and metadata). That API now returns a `CommandsResult` object which encapsulate a cluster state and the explanation.
A few of our unit tests generate a random search request body nd run tests against it. The source can optionally contain ext elements under the ext sections, which can be parsed by plugins. With this commit we introduce a plugin so that the tests don't use the one from FetchSubPhasePluginIT anymore. They rather generate multiple search ext elements. The plugin can parse and deal with all those. This extends the test coverage as we may have multiple elements with random names.
Took the chance to introduce a common test base class for search requests, called AbstractSearchTestCase, given that the setup phase is the same for all three tests around search source. Then we can have the setup isolated to the base class and the subclasses relying on it.
Closes#17685
* Throw error if query element doesn't end with END_OBJECT
Followup to #20515 where we added validation that after we parse a query within a query element, we should not get a field name. Truth is that the only token allowed at that point is END_OBJECT, as our DSL allows only one single query within the query object:
```
{
"query" : {
"term" : { "field" : "value" }
}
}
```
We can then check that after parsing of the query we have an end_object that closes the query itself (which we already do). Following that we can check that the query object is immediately closed, as there are no other tokens that can be present in that position.
Relates to #20515
I'd made some mistakes that hadn't caused the test to fail but did
slow it down and partially invalidate some of the assertions. This
fixes those mistakes.
* Fix FieldStats deserialization of `ip` field
Add missing readBytes in `ip` field deserialization
Add (de)serialization tests for all types
This change also removes the ability to set FieldStats.minValue or FieldStats.maxValue to null.
This is not required anymore since the stats are built on fields with values only.
Fixes#20516
If an index was created with pre 2.0 we should not treat it as supported
even if all segments have been upgraded to a supported lucene version.
Closes#20512
TransportService is such a central part of the core server, replacing
it's implementation is risky and can cause serious issues. This change removes the ability to
plug in TransportService but allows registering a TransportInterceptor that enables
plugins to intercept requests on both the sender and the receiver ends. This is a commonly used
and overwritten functionality but encapsulates the custom code in a contained manner.
During a networking partition, cluster states updates (like mapping changes or shard assignments)
are committed if a majority of the masters node received the update correctly. This means that the current master has access to enough nodes in the cluster to continue to operate correctly. When the network partition heals, the isolated nodes catch up with the current state and get the changes they couldn't receive before. However, if a second partition happens while the cluster
is still recovering from the previous one *and* the old master is put in the minority side, it may be that a new master is elected which did not yet catch up. If that happens, cluster state updates can be lost.
This commit fixed 95% of this rare problem by adding the current cluster state version to `PingResponse` and use them when deciding which master to join (and thus casting the node's vote).
Note: this doesn't fully mitigate the problem as a cluster state update which is issued concurrently with a network partition can be lost if the partition prevents the commit message (part of the two phased commit of cluster state updates) from reaching any single node in the majority side *and* the partition does allow for the master to acknowledge the change. We are working on a more comprehensive fix but that requires considerate work and is targeted at 6.0.
Currently, we silently accept malformed query where more
than one key is defined at the top-level for query object.
If all the keys have a valid query body, only the last query
is executed, besides throwing off parsing for additional suggest,
aggregation or highlighting defined in the search request.
This commit throws a parsing exception when we encounter a query
with multiple keys.
closes#20500
The default of 30s causes some tests to timeout when running ensureGreen and similar. This is because network delays simulation blocks connect until either the connect timeout expires or the disruption configured time stops. We do *not* immediately connect when the disruption is stopped.
Today when starting Elasticsearch without a Log4j 2 configuration file,
we end up throwing an array index out of bounds exception. This is
because we are passing no configuration files to Log4j. Instead, we
should throw a useful error message to the user. This commit modifies
the Log4j configuration setup to throw a user exception if no Log4j
configuration files are present in the config directory.
Relates #20493
The test uses a NetworkDelay that drops requests and slows down connecting. Next to that it disable node fault detection to make sure nodes are not removed before we check our publishing. Sadly that can lead to huge slow downs if the disruption hits while a node is still pinging (and tries to connect, which is slowed down). Instead we can start the disruption on the cluster state thread, making sure the result of fault detection won't be processed before we publish
This was actually a byproduct of trying to remove a //norelease for
index shard setting validation in MetaDataIndexService. This //norelease
is now removed. Previously this check was *only* used by the template
service, so we validated twice, once in the Settings infrastructure and
once when actually creating the index. We now instead use the Settings
infrastructure to validate the settings for shard count.
`TransportService#registerRequestHandler` allowed to register
handlers more than once and issues an annoying warn log message when
this happens. This change simple throws an exception to prevent regsitering
the same handler more than once. This commit also removes the ability
to remove request handlers.
Relates to #20468
We still use some crazy poor mans compression in InternalSearchHit that
uses a thread local and an unordered map as a lookup table if requested.
Stuff like this should be handled by compression on the transport layer
rather than in-line in the serialization code. This code is complex enough.
This utility class is used in 3 places while we only need to register
the handlers once per node. Otherwise we will see nasty `WARN` logs like:
`registered two transport handlers for action indices:data/read/search[phase/fetch/id/scroll]...`
This change will only register handlers inside the main TransportSearchAction.
After this change SearchModule doesn't subclass AbstractModule anymore and all wiring
happens in `Node.java`. As a side-effect several tests don't need a guice injector anymore.
This commit modifies the logger names within Elasticsearch to be the
fully-qualified class name as opposed removing the org.elasticsearch
prefix and dropping the class name. This change separates the root
logger from the Elasticsearch loggers (they were equated from the
removal of the org.elasticsearch prefix) and enables log levels to be
set at the class level (instead of the package level).
Relates #20457
Today when setting the logging level via the command-line or an API
call, the expectation is that the logging level should trickle down the
hiearchy to descendant loggers. However, this is not necessarily the
case. For example, if loggers x and x.y are already configured then
setting the logging level on x will not descend to x.y. This is because
the logging config for x.y has already been forked from the logging
config for x. Therefore, we must explicitly descend the hierarchy when
setting the logging level and that is what this commit does.
Relates #20463
This commit introduces a new plugin for file-based unicast hosts
discovery. This allows specifying the unicast hosts participating
in discovery through a `unicast_hosts.txt` file located in the
`config/discovery-file` directory. The plugin will use the hosts
specified in this file as the set of hosts to ping during discovery.
The format of the `unicast_hosts.txt` file is to have one host/port
entry per line. The hosts file is read and parsed every time
discovery makes ping requests, thus a new version of the file that
is published to the config directory will automatically be picked
up.
Closes#20323
This commit fixes the following geo_point bwc tests:
* GeoDistanceIT to test deprecated GeoDistanceRangeQuery on legacy indexes only.
* ExternalFieldMapperTests to correctly handle LatLonPoint type
* GeoPointFieldMapperTests to correctly test stored geo_point fields
This change replaces the fields parameter with stored_fields when it makes sense.
This is dictated by the renaming we made in #18943 for the search API.
The following list of endpoint has been changed to use `stored_fields` instead of `fields`:
* get
* mget
* explain
The documentation and the rest API spec has been updated to cope with the changes for the following APIs:
* delete_by_query
* get
* mget
* explain
The `fields` parameter has been deprecated for the following APIs (it is replaced by _source filtering):
* update: the fields are extracted from the _source directly.
* bulk: the fields parameter is used but fields are extracted from the source directly so it is allowed to have non-stored fields.
Some APIs still have the `fields` parameter for various reasons:
* cat.fielddata: the fields paramaters relates to the fielddata fields that should be printed.
* indices.clear_cache: used to indicate which fielddata fields should be cleared.
* indices.get_field_mapping: used to filter fields in the mapping.
* indices.stats: get stats on fields (stored or not stored).
* termvectors: fields are retrieved from the stored fields if possible and extracted from the _source otherwise.
* mtermvectors:
* nodes.stats: the fields parameter is used to concatenate completion_fields and fielddata_fields so it's not related to stored_fields at all.
Fixes#20155
Today we add a prefix when logging within Elasticsearch. This prefix
contains the node name, and index and shard-level components if
appropriate.
Due to some implementation details with Log4j 2 , this does not work for
integration tests; instead what we see is the node name for the last
node to startup. The implementation detail here is that Log4j 2 there is
only one logger for a name, message factory pair, and the key derived
from the message factory is the class name of the message factory. So,
when the last node starts up and starts setting prefixes on its message
factories, it will impact the loggers for the other nodes.
Additionally, the prefixes are lost when logging an exception. This is
due to another implementation detail in Log4j 2. Namely, since we log
exceptions using a parameterized message, Log4j 2 decides that that
means that we do not want to use the message factory that we have
provided (the prefix message factory) and so logs the exception without
the prefix.
This commit fixes both of these issues.
Relates #20429
This commit cuts over geo_point fields to use Lucene's new point-based LatLonPoint type for indexes created in 5.0. Indexes created prior to 5.0 continue to use their respective encoding type. Below is a description of the changes made to support the new encoding type:
* New indexes use a new LatLonPointFieldMapper which provides a parse method for the new type
* The new LatLonPoint parse method removes support for lat_lon and geohash parameters
* Backcompat testing for deprecated lat_lon and geohash parameters is added to all unit and integration tests
* LatLonPointFieldMapper provides DocValues support (enabled by default) which uses Lucene's new LatLonDocValuesField type
* New LatLonPoint field data classes are added for aggregation support (wraps LatLonPoint's Numeric Doc Values)
* MultiFields use the geohash as the string value instead of the lat,lon string making it easier to perform geo string queries on the geohash instead of a lat,lon comma delimited string.
Removed Features:
* With the removal of geohash indexing, GeoHashCellQuery support is removed for all new indexes (still supported on existing indexes)
* LatLonPoint does not support a Distance Range query because it is super inefficient. Instead, the geo_distance_range query should be accomplished using either the geo_distance aggregation, sorting by descending distance on a geo_distance query, or a boolean must not of the excluded distance (which is what the distance_range query did anyway).
TODO:
* fix/finish yaml changes for plugin and rest integration tests
* update documentation
When generating random bogus documents, it could happen that they contain both the terms "the" and "ultimate", which would match the query "the ultimate" better than all the other non bogus documents, which would cause testCrossFieldMode to fail. "the" is a term that's relatively likely to be randomly generated given its length; we can simply increase the minimum length of randomly generated terms to 5, so that there are no collisions, as "the" cannot be generated anymore (nor can "ultimate" as the lenght doesn't go up to 8).
Also made some assertions more accurate to check how many hits match a query rather than checking only that the first or second hits are there.
Closes#18873
This commit adds a -q/--quiet option to Elasticsearch so that it does not log anything in the console and closes stdout & stderr streams. This is useful for SystemD to avoid duplicate logs in both journalctl and /var/log/elasticsearch/elasticsearch.log while still allows the JVM to print error messages in stdout/stderr if needed.
closes#17220
This commit adds a health status parameter to the cat indices API for
filtering on indices that match the specified status (green|yellow|red).
Relates #20393
Previously when trying to listen on virtual interfaces during
bootstrap the application would stop working - the interface
couldn't be found by the NetworkUtils class.
The NetworkUtils utilize the underlying JDK NetworkInterface
class which, when asked to lookup by name only takes physical
interfaces into account, failing at virtual (or subinterfaces)
ones (returning null).
Note that when interating over all interfaces, both physical and
virtual ones are taken into account.
This changeset asks for all known interfaces, iterates over them
and matches on the given name as part of the loop, allowing it
to catch both physical and virtual interfaces.
As a result, elasticsearch can now also serve on virtual
interfaces.
A test case has been added which makes sure that all
iterable interfaces can be found by their respective name.
Note that this PR is a second iteration over the previously
merged but later reverted #19537 because it causes tests
to fail when interfaces are down. The test has been modified
to take this into account now.
Closes#17473Closes#19568
Relates #19537
Match query throws parsing errors when an array of terms is provided, we should test that to make sure this behaviour doesn't change.
Relates to #15741
Once a primary is marked as relocated, we can not safely move it back to started (as we have no way of waiting on inflight operations that are performed on the target primary). If the master cancels the relocation in that state, we fail the primary. Sadly, there is a racing condition between the `updateRoutingEntry` method (which is called when the relocation is cancelled by the master) and the `relocated` method. That racing condition can leave the shard as marked "relocated" but have the routing entry not reflect the target relocation. This in turns causes NPEs in TransportReplicationAction:
```
java.util.Objects requireNonNull Objects.java 203
org.elasticsearch.action.support.replication.TransportReplicationAction$ConcreteShardRequest <init> TransportReplicationAction.java 982
```
Sadly, once we end up in this state, we will never recover.
This commit fixes that race condition by making sure `updateRoutingEntry` acquires the mutex when checking for the relocated status. While at it, I also tightened up the code and added lots of assertions/hard checks.
Adds the entire DiscoveryNode object to the trace log in AllocationDeciders.
The allocation decider logging at TRACE level can sometimes be helpful to determine why a shard is not getting allocated on specific nodes. Currently, we only log the node id for these messages. It will be helpful to also include the node name (esp. when dealing with a lot of nodes in the cluster).
In 5.x we allowed this with a deprecation warning. This removes the code
added for that deprecation, requiring the cluster name to not be in the
data path.
Resolves#20391
This change removes the guice dependency handling for SearchService and
several related classes like SearchTransportController and SearchPhaseController.
The latter two now have package private constructors and dependencies like FetchPhase
are now created by calling their constructors explicitly. This also cleans up several users
of the DefaultSearchContext and centralized it's creation inside SearchService.
The cause early termination of tests, which means we don't clean up and close shards, but also don't cause a failure. This in turns makes TestRuleTemporaryFilesCleanup fail on windows (because it does try to clean up, but the files are referenced). Getting stuff like:
```
> C:\jenkins\workspace\es_core_master_windows-2012-r2\core\build\testrun\test\J3\temp\org.elasticsearch.index.shard.IndexShardTests_68B5E1103D78A58B-001\tempDir-006\indices\_na_\0\translog\translog-1.tlog: java.nio.file.AccessDeniedException: C:\jenkins\workspace\es_core_master_windows-2012-r2\core\build\testrun\test\J3\temp\org.elasticsearch.index.shard.IndexShardTests_68B5E1103D78A58B-001\tempDir-006\indices\_na_\0\translog\translog-1.tlog
```
Splits the PrimaryShardAllocator and ReplicaShardAllocator's decision
making for a shard from the implementation of that decision on the
routing table. This is a step toward making it easier to use the same
logic for the cluster allocation explain APIs.
Introduce a base class for unit tests that are based on real `IndexShard`s. The base class takes care of all the little details needed to create and recover shards.
This commit also moves `IndexShardTests` and `ESIndexLevelReplicationTestCase` to use the new base class. All tests in `IndexShardTests` that required a full node environment were moved to a new `IndexShardIT` suite.
Before, when there was a new cluster state to publish,
zen discovery would first update the set of nodes to
ping based on the new cluster state, then publish the new
cluster state. This is problematic because if the cluster
state failed to publish, then the set of nodes to ping
should not have been updated.
This commit fixes the issue by updating the set of
nodes to ping for fault detection only *after* the new
cluster state has been published.
We should rather throw a clear exception to clearly point out that we cannot extract fields from _source. Note that this happens only when explicitly trying to extract fields from source. When source is disabled and no _source parameter is specified, no errors will be thrown and no source will be returned.
Closes#20408
Relates to #20093
Search section supports an ext section that is used to provide additional config needed from plugins. It is now tied to sub fetch phases because it is the only section that may need additional config, but there is no reason for the two to be tightly coupled.
It is now possible to register a searchExtParser independently from a sub fetch phase. All a search ext parser does is parsing some ext section of a search request, whose parsed resulting object is stored in the search context for later retrieval.
The parser is now needed only for sub fetch phases, but doesn't have to be strictly connected to them, it could be used for something else as well potentially
The context was an object where the parsed info are stored. That is more of what we call the builder since after the search refactoring. No need for generics in FetchSubPhaseParser then. Also the previous setHitsExecutionNeeded wasn't useful, it can be removed as well, given that once there is a parsed ext section, it will become a builder that can be retrieved by the sub fetch phase. The sub fetch phase is responsible for doing nothing in case the builder is not set, meaning that the fetch sub phase is plugged in but the request didn't have the corresponding section.
SearchParseElement is renamed to FetchSubPhaseParser and moved to the search.fetch package. Its parse method doesn't get the SearchContext as argument anymore, only the XContentParser, and the return type is what gets parsed (the fetch sub phase context which we may as well rename later).
It is the parser that initializes the FetchSubPhaseContext then. SearchService retrieves the parser by name, calls parse against it and stores the result of parsing by name. No need for FetchSubPhase.ContextFactory anymore, which can be removed.
Given that doc value fields is our own fetch sub phase, it doesn't need to be implemented like if it was plugged in from the outside. It doesn't need its own fetch sub phase context, but it can just be an instance member in SearchContext
Parse elements are always empty for all of our search phases. They can be non empty only for sub fetch phases as they are pluggable and search parse element is left to be used only for plugins that plug in their own sub fetch phase. Only FetchPhase needs now the parseElements method then.
Log4j has a bug where on shutdown it ignores that JMX might be disabled;
since it does not respect this on shutdown, it proceeds to attempt to
access JMX leading to a security exception that should have otherwise
not occurred had it respected that JMX is disabled. This commit
intentionally introduces jar hell with the Server class to work around
this bug until a fix is released.
Relates #20389
Previously we would disable console logging in certain circumstances
(for example, if Elasticsearch is not in the foreground, or if
Elasticsearch is in the foreground but an exception was thrown during
bootstrap). This commit makes this handling work with Log4j 2. This will
prevent users from seeing double bootstrap check failure messages.
Relates #20387
Since the sub query of a function score query is checked on CustomQueryScorer#extractUnknwonQuery we try to extract the terms from the rewritten form of the sub query.
MultiTermQuery rewrites query within a constant score query/weight which returns an empty array when extractTerms is called.
The extraction of the inner terms of a constant score query/weight changed in Lucene somewhere between ES version 2.3 and 2.4 (https://issues.apache.org/jira/browse/LUCENE-6425) which is why this problem occurs on ES > 2.3.
This change moves the extraction of the sub query from CustomQueryScorer#extractUnknownQuery to CustomQueryScorer#extract in order to do the extraction of the terms on the original form of the sub query.
This fixes highlighting of sub queries that extend MultiTermQuery since there is a special path for this kind of query in the QueryScorer (which extract the terms to highlight).
This was an error-prone version type that allowed overriding previous
version semantics. It could cause primaries and replicas to be out of
sync however, so it has been removed.
Resolves#19769
This adds a version field to Templates, which is itself is unused by Elasticsearch, but exists for users to better manage their own templates. Like description, it's optional.
Previous versions of Elasticsearch permitted unquoted JSON field names even though this is against the JSON spec. This leniency was disabled by default in the 5.x series of Elasticsearch but a backwards compatibility layer was added via a system property with the intention of removing this layer in 6.0.0. This commit removes this backwards compatibility layer.
Relates #20388
This commit removes an assertion regarding removing the support for
cluster name being part of the data path in favor of a tracking issue.
Relates #20391
This includes:
- All regular numeric types such as int, long, scaled-float, double, etc
- IP addresses
- Dates
- Geopoints and Geoshapes
Relates to #19784
The 5.x series of Elasticsearch emits a warning if any of the old
logging configuration formats are present. This commit removes that
warning.
Relates #20386
By default, when an exception causes the JVM to terminate, the stack
trace is printed. In the case of failing bootstrap checks, this stack
trace is useless to the user, and might even distract them from seeing
that the bootstrap checks failed for reasons under their control. With
this commit, we cause the stack trace for a failing bootstrap check to
be truncated.
We also modify some methods to not declare that they throw the top level
checked exception type Exception, but instead explicitly declare the
exceptions that they throw. These exceptions are caught and wrapped in a
BootstrapException so that we can percolate only two exception types out
of Bootstrap#init as checked exception, BootstrapException and
NodeValidationException.
Relates #19989
The collect_payloads parameter of the span_near query was previously
deprecated with the intention to be removed. This commit removes this
parameter.
Relates #20385
This commit cleans most of the methods of XContentBuilder so that:
- Jackson's convenience methods are used instead of our custom ones (ie field(String,long) now uses Jackson's writeNumberField(String, long) instead of calling writeField(String) then writeNumber(long))
- null checks are added for all field names and values
- methods are grouped by type in the class source
- methods have the same parameters names
- duplicated methods like field(String, String...) and array(String, String...) are removed
- varargs methods now have the "array" name to reflect that it builds arrays
- unused methods like field(String,BigDecimal) are removed
- all methods now follow the execution path: field(String,?) -> field(String) then value(?), and value(?) -> writeSomething() method. Methods to build arrays also follow the same execution path.
This change checks that `index.merge.scheduler.max_thread_count` < `index.merge.scheduler.max_merge_count` and fails index creation
and settings update if the condition is not met.
Fixes#20380
The logging configuration tests write to log files which are deleted at
the end of the test. If these files are not closed, some operating
systems will complain when these deletes are performed. This commit
ensures that the logging system is properly shutdown so that these files
can be properly deleted.
This was an error-prone version type that allowed overriding previous
version semantics. It could cause primaries and replicas to be out of
sync however, so it has been removed.
Resolves#19769
This change adds a `field.with.dots` to all 2.4 bwc indicse and above.
It also adds verification code to OldIndexBackwardsCompatibilityIT to
ensure we upgrade the indices cleanly and the field is present.
Closes#19956
Due to the way the nodes where shut down etc. we always flushed
away the translog. This means we never tested upgrades of transaction
logs from older version. This change regenerates all valid bwc indices
and repositories with transaction logs and adds correspondent changes
to the OldIndexBackwardsCompatibilityIT.java
Parsing a script on retrieval causes it to be re-parsed on every single script call, which can be very expensive for large frequently called scripts. This change switches to parsing scripts only once during store operation.
With the search refactoring we don't use SearchParseElement anymore to define our own parsing code but only for plugins. There was an abstract subclass called FetchSubPhaseParseElement in our production code, only used in one of our tests. We can remove that abstract class as it is not needed and not that useful for the test that depends on it.
FsInfo#total is removed in favour of getTotal, which allows to retrieve the total value
[TEST] fix FsProbeTests: null is not accepted as path constructor argument
During adding the new settings infrastructure the option to specify the
size of the filter cache as a percentage of the heap size which accidentally
removed. This change adds that ability back.
In addition the `Setting` class had multiple `.byteSizeSetting` methods
which all except one used `ByteSizeValue.parseBytesSizeValue` to parse
the value. One method used `MemorySizeValue.parseBytesSizeValueOrHeapRatio`.
This was confusing as the way the value was parsed depended on how many
arguments were provided.
This change makes all `Setting.byteSizeSetting` methods parse the value
the same way using `ByteSizeValue.parseBytesSizeValue` and adds
`Setting.memorySizeSetting` methods to parse settings that express memory
sizes (i.e. can be absolute bytes values or percentages). Relevant settings
have been moved to use these new methods.
Closes#20330
Exposing lucene 6.x minhash tokenfilter
Generate min hash tokens from an incoming stream of tokens that can
be used to estimate document similarity.
Closes#20149
This changes DiskThresholdDecider to only factor in leaving shards when
checking if a shard can remain. Previously, leaving shards were factored
in for both the `canAllocate` and `canRemain` checks, however, this
makes only the leaving shard sizes subtracted in the `canRemain` check.
It was possible that multiple shards relocating away from the node would
have their entire size subtracted, and the node had a chance to go over
the disk threshold (or hit the disk full) because it subtracted space
that was still being used for other in-progress relocations.
** The default script language is now maintained in `Script` class.
* Added `script.legacy.default_lang` setting that controls the default language for scripts that are stored inside documents (for example percolator queries). This defaults to groovy.
** Added `QueryParseContext#getDefaultScriptLanguage()` that manages the default scripting language. Returns always `painless`, unless loading query/search request in legacy mode then the returns what is configured in `script.legacy.default_lang` setting.
** In the aggregation parsing code added `ParserContext` that also holds the default scripting language like `QueryParseContext`. Most parser don't have access to `QueryParseContext`. This is for scripts in aggregations.
* The `lang` script field is always serialized (toXContent).
Closes#20122
When Elasticsearch depended on Log4j 1, there was jar hell from the
log4j and the apache-log4j-extras jar. As these dependencies are gone,
the jar hell exemption for Log4j 1 can be removed.
Relates #20336
This commit expands on the message printed when config files are
preserved when removing a plugin to give the user an indication of the
reason the config files are preserved.
Replicated operation consist of a routing action (the original), which is in charge of sending the operation to the primary shard, a primary action which executes the operation on the resolved primary and replica actions which performs the operation on a specific replica. This commit adds the targeted shard's allocation id to the primary and replica actions and makes sure that those match the shard the actions end up executing on.
This helps preventing extremely rare failure mode where a shard moves off a node and back to it, all between an action is sent and the time it's processed.
For example:
1) Primary action is sent to a relocating primary on node A.
2) The primary finishes relocation to node B and start relocating back.
3) The relocation back gets to the phase and opens up the target engine, on the original node, node A.
4) The primary action is executed on the target engine before the relocation finishes, at which the shard copy on node B is still the official primary - i.e., it is executed on the wrong primary.
When removing a plugin with a config directory, we preserve the config
directory. This is because the workflow for upgrading a plugin involves
removing and then installing the plugin again and losing the plugin
config in this case would be terrible. This commit causes a message
regarding this to be printed in case the user wants to manually delete
these files.
This commit removes a line-length violation in RemovePluginCommand.java
and removes this file from the list of files for which the line-length
check is suppressed.
We have intentionally introduced leniency for ThrowableProxy from Log4j
to work around a bug there. Yet, a test for this introduced leniency was
not addded. This commit introduces such a test.
Relates #20329
Previously we had an exemption for Joda-Time BaseDateTime because we
forked this class to remove the usage of a volatile field. This hack is
no longer in place, so the exemption is no longer necessary. This commit
removes that exemption.
Relates #20328
The BackgroundIndexer now uses auto-generated IDs randomly. This causes some problems
for tests that still rely on the fact that the IDs are increasing integers. This change
exposes all IDs via a Set<String> to iterate over for tests.
A warning was introduced if old log config files are present (e.g.,
logging.yml). However, this check is executed unconditionally. This can
lead to no such file exceptions when logging configs are not being
resolved, for example when installing a plugin. This commit moves this
check to only execute when logging configs are being resolved.
Some assertions in MaxMapCountCheckTests assert that certain messages
are logged. These assertions pass everywhere except Windows where the
JVM seems confused. The issue is not the javac compiler as the bytecode
produced on OS X and Windows is identical for the relevant classes so
this leaves a possible JVM bug. It is not worth investigating the
ultimate cause of this bug so instead this commit introduces a
workaround.
Log4j has a bug where it does not handle a security exception that can
be thrown when it is rendering a stack trace. This commit intentionally
introduces jar hell with the ThrowableProxy class to work around this
bug until a fix is a released.
Relates #20306
To ensure we don't add documents more than once even if it's mostly paranoia
except of one case where we relocated a shards away and back to the same node
while an initial request is in flight but has not yet finished AND is retried.
Yet, this is a possible case and for that reason we ensure we pass on the
maxUnsafeAutoIdTimestamp on when we prepare for translog recovery.
Relates to #20211
Currently it does not because our parsers do not support big integers/decimals
(on purpose) but we do not have to ask our parser for the number type, we can
just ask the jackson parser for a number representation of the value with the
right type.
Note that I did not add similar tests for big decimals because Jackson seems to
never return big decimals, even for decimal values that are out of the range of
values that can be represented by doubles.
Closes#11508
This commit configures test logging for Log4j 2. The default logger
configuration uses the console appender but at the error level, so most
tests are missing logging. Instead, this commit provides a configuration
for tests which is picked up from the classpath by Log4j 2 when it
initializes. However, this now means that we can no longer initialize
Log4j with a bare-bones configuration when tests run as doing so will
prevent Log4j 2 from attempting to configure logging via the
classpath. Consequently, we move this needed initialization (as
commented, to avoid a message about a status logger not being configured
when we are preparing to configure Log4j from properties files in the
config directory) to only run when we are explicitly configuring Log4j
from properties files.
Relates #20284
Rather than checking that those values are greater than 0, we can sum up the values gotten from all nodes and check that what is returned is that same value.
The mem section was buggy in cluster stats and removed. It is now added back with the same structure as in node stats, containing total memory, available memory, used memory and percentages. All the values are the sum of all the nodes across the cluster (or at least the ones that we were able to get the values from).
If elasticsearch controls the ID values as well as the documents
version we can optimize the code that adds / appends the documents
to the index. Essentially we an skip the version lookup for all
documents unless the same document is delivered more than once.
On the lucene level we can simply call IndexWriter#addDocument instead
of #updateDocument but on the Engine level we need to ensure that we deoptimize
the case once we see the same document more than once.
This is done as follows:
1. Mark every request with a timestamp. This is done once on the first node that
receives a request and is fixed for this request. This can be even the
machine local time (see why later). The important part is that retry
requests will have the same value as the original one.
2. In the engine we make sure we keep the highest seen time stamp of "retry" requests.
This is updated while the retry request has its doc id lock. Call this `maxUnsafeAutoIdTimestamp`
3. When the engine runs an "optimized" request comes, it compares it's timestamp with the
current `maxUnsafeAutoIdTimestamp` (but doesn't update it). If the the request
timestamp is higher it is safe to execute it as optimized (no retry request with the same
timestamp has been run before). If not we fall back to "non-optimzed" mode and run the request as a retry one
and update the `maxUnsafeAutoIdTimestamp` unless it's been updated already to a higher value
Relates to #19813
* master:
Avoid NPE in LoggingListener
Randomly use Netty 3 plugin in some tests
Skip smoke test client on JDK 9
Revert "Don't allow XContentBuilder#writeValue(TimeValue)"
[docs] Remove coming in 2.0.0
Don't allow XContentBuilder#writeValue(TimeValue)
[doc] Remove leftover from CONSOLE conversion
Parameter improvements to Cluster Health API wait for shards (#20223)
Add 2.4.0 to packaging tests list
Docs: clarify scale is applied at origin+offest (#20242)
We have specific support for writing `TimeValue`s in the form of
`XContentBuilder#timeValueField`. Writing a `TimeValue` using
`XContentBuilder#writeValue` is a bug waiting to happen.
* Params improvements to Cluster Health API wait for shards
Previously, the cluster health API used a strictly numeric value
for `wait_for_active_shards`. However, with the introduction of
ActiveShardCount and the removal of write consistency level for
replication operations, `wait_for_active_shards` is used for
write operations to represent values for ActiveShardCount. This
commit moves the cluster health API's usage of `wait_for_active_shards`
to be consistent with its usage in the write operation APIs.
This commit also changes `wait_for_relocating_shards` from a
numeric value to a simple boolean value `wait_for_no_relocating_shards`
to set whether the cluster health operation should wait for
all relocating shards to complete relocation.
* Addresses code review comments
* Don't be lenient if `wait_for_relocating_shards` is set
* master:
Increase visibility of deprecation logger
Skip transport client plugin installed on JDK 9
Explicitly disable Netty key set replacement
percolator: Fail indexing percolator queries containing either a has_child or has_parent query.
Make it possible for Ingest Processors to access AnalysisRegistry
Allow RestClient to send array-based headers
Silence rest util tests until the bogusness can be simplified
Remove unknown HttpContext-based test as it fails unpredictably on different JVMs
Tests: Improve rest suite names and generated test names for docs tests
Add support for a RestClient base path
The deprecation logger is an important way to make visible features of
Elasticsearch that are deprecated. Yet, the default logging makes the
log messages for the deprecation logger invisible. We want these log
messages to be visible, so the default logging for the deprecation
logger should enable these log messages. This commit changes the log
level of deprecation log message to warn, and configures the deprecation
logger so that these log messages are visible out of the box.
Relates #20254
This commit enables CLI tools to have console logging. For the CLI
tools, we skip configuring the logging infrastructure via the config
file, and instead set the level only via a system property.
This commit modifies the call sites that allocate a parameterized
message to use a supplier so that allocations are avoided unless the log
level is fine enough to emit the corresponding log message.
While removing an index isn't actually an alias action, if we add
an alias action that deletes an index then we can delete and index
and add an alias with the same name as the index atomically, in
the same cluster state update.
Closes#20064
This commit adds the support for exclusion filter to the response filtering (filter_path) feature. It changes the XContentBuilder APIs so that it now accepts two types of filters: inclusive and exclusive. Filters are no more String arrays but sets of String instead.
Instead of get, set and remove we do get, remove and then set to avoid type conflicts in IngestDocument.
If the set still fails we try to restore the original field in ingest document.
Closes#19892
already has a file of the same name in the Store, but is different
in content (different checksum/length), then those files are first
deleted before restoring the files in question.
This changes Elasticsearch to automatically downgrade `text` and
`keyword` fields into appropriate `string` fields when changing the
mapping of indexes imported from 2.x. This allows users to use the
modern, documented syntax against 2.x indexes. It also makes it clear
that reindexing in order to recreate the index in 5.0 is required for
any long lived indexes. This change is useful for the times when you
can't (cluster is just starting, not stable enough for reindex) or
shouldn't (index will only live 90 days or something).
Now that #20081 is merged we can check that cacheKey is consistent across equal search requests, something that wasn't true before due to ordering of map keys when using index boost.
Relates to #19986
Netty3/4 TcpTransport implementations are creating thread factories with a "http_server" thread prefix whereas it should start with "transport_server" and let the "http_server" prefix for the HttpServerTransport implementations.
This test is periodically failing. As I suspect that the GCDisruption scheme is somehow making the wrong node block on
its cluster state update thread, I've added some more logging and a thread dump once the given assertion triggers
again.
today we fsync in a blocking fashion where all threads block while another
syncs. Yet, we can improve this and make use of the async infrastrucutre added
for `wait_for_refresh` and make fsyncing single threaded while all other threads
can continue indexing. The syncing thread then notifies a listener once the requests
location is synced. This also allows to send docs to replicas before its actually fsynced
allowing for cocurrent replica processing.
This patch has a significant impact on performance on slower discs. An initial single node benchmark
shows that on very fast SSDs there is no noticable impact but on slow spinning disk this
patch shows a ~32% performance improvement.
```
NVME SSD:
336ec0ac9a (master):
Total docs/sec: 47200.9
Total docs/sec: 46440.4
23543a97e3e7f72a31e26b50e00931919784426c (async wait for translog):
Total docs/sec: 47461.6
Total docs/sec: 46188.3
-------------------------------------------------------------------
Spinning disk:
336ec0ac9a (master):
Total docs/sec: 22733.0
Total docs/sec: 24129.8
23543a97e3e7f72a31e26b50e00931919784426c (async wait for translog):
Total docs/sec: 32724.1
Total docs/sec: 32845.4
--------------------------------------------------------------------
```
Currently, after at least one pipeline is registered it is getting rebuilt on every single cluster state update, even when this update is not related to ingest metadata. This change adds a check that the ingest metadata changed before trying to rebuild all pipelines.
Adds an explicit recoverySource field to ShardRouting that characterizes the type of recovery to perform:
- fresh empty shard copy
- existing local shard copy
- recover from peer (primary)
- recover from snapshot
- recover from other local shards on same node (shrink index action)
* Fix NPE during search with source filtering if the source is disabled.
Instead of throwing an NPE, a search response with source filtering will not contain the source if it is disabled in the mapping.
Closes#7758
* Created unit tests for FetchSourceSubPhase. Tests similar to SourceFetchingIT.
Removed SourceFetchingIT#testSourceDisabled (now covered via unit test FetchSourceSubPhaseTests#testSourceDisabled).
* Updated FetchSouceSubPhase unit tests per comments.
Renamed main unit test method.
Use assertEquals and assertNull instead of assertThat (less code).
Fixes an issue where the value for the `script.engine.<lang>.inline`
settings would be _set_ properly, but would not accurately be reflected
in the `include_defaults` output. Adds a test to ensure the default raw
setting is now correct.
Resolves#20159
* Make sure indexBoost is serialized in a consistent order
* remove hasIndexBoost by using indexBoost size
* Make sure phrase suggester's collateParams is serialized in consistent
order
* Make StreamOutput writer to serialize maps in consistent order
The class Setting holds a static reference to a deprecation logger
instance. When the class initializer for Setting runs, it starts
triggering log4j initialization. There is a chain of initializations
from InternalSettingsPreparer to Environment to Setting that triggers
this initialization before log4j configuration has occurred. This commit
modifies this initialization so that initialization is not done eagerly.
Relates #20170
This makes GET operations more consistent with `_search` operations which expect
`(stored_)fields` to work on stored fields and source filtering to work on the
`_source` field. This is now possible thanks to the fact that GET operations
do not read from the translog anymore (#20102) and also allows to get rid of
`FieldMapper#isGenerated`.
The `_termvectors` API (and thus more_like_this too) was relying on the fact
that GET operations would extract fields from either stored fields or the source
so the logic to do this that used to exist in `ShardGetService` has been moved
to `TermVectorsService`. It would be nice that term vectors do not rely on this,
but this does not seem to be a low hanging fruit.
Non-stale shard copies are currently tracked using their allocation ids in the cluster state. When a node leaves the cluster, shard copies of that node are marked as stale by removing their allocation ids from the active set in the cluster. For full cluster restarts, this can have the unwanted effect that only the last node holding a copy of the shard will be seen as non-stale. The other shard copies are not really stale though as long as no writes have happened on this shard copy. Shard copies should thus only be marked as stale (by the master in the cluster state) if other active shards have received writes.
This commit implements the above logic and also renames the persistent structure used to track non-stale shard copies from "active_allocations" to "in_sync_allocations" as we now also support tracking non-stale shard copies that have no active routing entries in the cluster state.
We need to get the string representation of numbers in order to include in
`_all`. However this has a cost and disabling `_all` is rather common so we
should look into skipping it.
The network types in use on a cluster can be useful information to have,
so this commit adds aggregate metrics for the network types in use in a
cluster to the cluster stats.
Relates #20144
This moves the Writer interface from StreamOutput into Writeable, as a peer of its inner Reader interface. This should hopefully help to avoid random functional interfaces being created for the same purpose.
It also makes use of the moved class by updating writeMapOfLists and readMapOfLists.
Previous to this change the nesting of aggregation profiling results
would be incorrect when the request contains a terms aggregation and the
collect mode is (implicitly or explicitly) set to `breadth_first`. This
was because the aggregation profiling has to make the assumption that
the `preCollection()` method of children aggregations is always called in
the `preCollection()` method of their parent aggregation. When the collect
mode is `breadth_first` the `preCollection` of the children aggregations
was delayed until the documents were replayed.
This change moves the `preCollection()` of deferred aggregations to run
during the `preCollection()` of the parent aggregation. This should have
no adverse impact on the breadth_first mode as there is no allocation of
memory in any of the aggregations.
We also apply the same logic to the diversified sampler aggregation as
we did to the terms aggregation to move the `preCollection()` of the
child aggregations method to be called during the `preCollection()` of
the parent aggregation.
This commit also includes a fix so that the `ProfilingLeafBucketCollector`
propagates the scorer to its delegate so the diversified sampler agg works
when profiling is enabled.
If they are specified by a mapping update, these properties are currently
ignored. This commit also fixes the handling of `dynamic_templates` so that it
is possible to remove templates (and so that it works more similarly to all
other mapping properties).
Closes#20111
This is a house cleaning commit that refactors GeoPointFieldMapperLegacy to LegacyGeoPointFieldMapper for consistency with Legacy Numerics and IP field mappers.
IndexedGeoBoundingBoxQuery and InMemoryGeoBoundingBoxQuery are also deprecated and refactored as Legacy classes.
This change adds a special field named _none_ that allows to disable the retrieval of the stored fields in a search request or in a TopHitsAggregation.
To completely disable stored fields retrieval (including disabling metadata fields retrieval such as _id or _type) use _none_ like this:
````
POST _search
{
"stored_fields": "_none_"
}
````
Today we do a lot of accounting inside the engine to maintain locations
of documents inside the transaction log. This is only needed to ensure
we can return the documents source from the engine if it hasn't been refreshed.
Aside of the added complexity to be able to read from the currently writing translog,
maintainance of pointers into the translog this also caused inconsistencies like different values
of the `_ttl` field if it was read from the tlog or not. TermVectors are totally different if
the document is fetched from the tranlog since copy fields are ignored etc.
This chance will simply call `refresh` if the documents latest version is not in the index. This
streamlines the semantics of the `_get` API and allows for more optimizations inside the engine
and on the transaction log. Note: `_refresh` is only called iff the requested document is not refreshed
yet but has recently been updated or added.
#Relates to #19787
I was writing tests for RAM usage estimation of LiveVersionMap and found a
couple issues:
- The BytesRef objects used as uids were oversized since they were created
via `new BytesRef(CharSequence)` which creates a `byte[]` whose size is 3x
the length of the provided char sequence. Given that our uids are most of
times ASCII sequences, this is a waste of memory.
- `VersionValue` was using `translogLocation.size` instead of
`translogLocation.ramBytesUsed()` for RAM estimation, which is completely
unrelated to the memory footprint of the `Translog.Location` object.
In particular, the latter issue could cause RAM usage estimation to be
significantly overestimated, especially on large documents.
I also added tests for ram accounting.
Currently, bulk item requests can be any ActionRequest, this commit
restricts bulk item requests to DocumentRequest. This simplifies
handling failures during bulk requests. Additionally, a new enum
is added to DocumentRequest to represent the intended operation
to be performed by a document request. Now, index operation type
also uses the new enum to specify whether the request should
create or index a document.
Deprecates the optimize_bbox parameter on geodistance queries. This has no longer been needed since version 2.2 because lucene geo distance queries (postings and LatLonPoint) already optimize by bounding box.
Catching and suppressing AlreadyClosedException from Lucene is dangerous because it can mean there is a bug in ES since ES should normally guard against invoking Lucene classes after they were closed.
I reviewed the cases where we catch AlreadyClosedException from Lucene and removed the ones that I believe are not needed, or improved comments explaining why ACE is OK in that case.
I think (@s1monw can you confirm?) that holding the engine's readLock means IW will not be closed, except if disaster strikes (failEngine) at which point I think it's fine to see the original ACE in the logs?
Closes#19861
When a SearchContext is closed it's reader / searcher reference is closed too.
If this happens while a search is accessing it's reader reference it can lead
to an unexpected `AlreadyClosedException` or worst case, an already closed MMapDirectory
is access causing a `SIGSEV` like in #20008 (even though the window for this is very small).
SearchContext can be closed concurrently if:
* an index is deleted / removed from the node
* a search context is idle for too long and is cleaned by the reaper
* an explicit freeContext message is received
This change adds reference counting to the SearchContext base class and it's used
inside SearchService each time the context is accessed.
Closes#20008
This includes:
- All regular numeric types such as int, long, scaled-float, double, etc
- IP addresses
- Dates
- Geopoints and Geoshapes
Relates to #19784
Adds ignoreUnavailable to the snapshot status API to be consistent
with the get snapshots API which has a similar parameter. If
ignoreUnavailable is set to true, then the snapshot status request
will ignore any snapshots that were not found in the repository,
instead of throwing a SnapshotMissingException.
Closes#18522
StartupException overrides Throwable#printStackTrace(PrintStream) but
not Throwable#printStackTrace(PrintWriter). The former override is used
when the JVM terminates with an exception, but the latter override can
be used in some logging frameworks when rendering an exception (e.g.,
log4j). This commit adds an override for the latter, with the behavior
for the two overrides being the same.
This commit renames StartupError to StartupException. This rename is due
to the fact that this class inherits from Exception not Error in the
Throwable class hierarchy.
This commit removes the minimum master nodes bootstrap check. The
motivation for this check was to raise awareness of the minimum master
nodes setting but this check gives a false sense of security because
it's too easy to set the setting to one when first standing up a cluster
and never update it when adding master-eligible nodes, or have it out of
sync on various nodes and still pass this check. Since this check does
not have the security that other bootstrap checks provide, it should be
removed in favor of a stronger guarantee in the future. We do log a
warning if an election occurs with minimum master nodes less than a
quorum of master-eligible nodes that participated in an election and
this is the best that we can do right now.
Relates #20082
Some time ago, AllocationService.reroute was changed to not only return updates to the routing table but also to the metadata (which contain primary terms and in-sync allocation ids). A lot of test code still only updates the routing table though, which is fixed by this PR.
How index templates match is currently controlled by the
IndexTemplateFilter interface. It is pluggable, to add additional
filter implementations to the default glob matcher.
This change removes the IndexTemplateFilter interface completely. This
is a very esoteric extension point, and not worth maintaining. Instead,
any improvements should be made to all of our glob matching.
This change moves custom ShardsAllocators from registration on
ClusterModule, to implementing getShardsAllocators() in ClusterPlugin.
It also removes the legacy alias "even_shard" for the balanced allocator
which was removed in 2.0.
Currently, when you set `include_in_all` on an object, it will propagate the
information to its sub mappers immediately. This is annoying because this is
done using a different mechanism than regular mapping updates.
This PR changes object fields to propagate the information at document parsing
time rather than when `include_an_all` is updated. While moving this cost to
document parsing time rather than mapping update time is probably a bad
trade-off, I am confident that this cost is very low and think this new way
makes things simpler.
This change converts AllocationDecider registration from push based on
ClusterModule to implementing with a new ClusterPlugin interface.
AllocationDecider instances are allowed to use only Settings and
ClusterSettings.
Previously this was possible, which was problematic when issuing a
request like `DELETE /-myindex`, which was interpretted as "delete
everything except for myindex".
Resolves#19800
Now document created flag is set in the index operation instead of
being returned from engine operation. This change makes the engine
index and delete operations have the same signature.
Adds a class that records changes made to RoutingAllocation, so that at the end of the allocation round other values can be more easily derived based on these changes. Most notably, it:
- replaces the explicit boolean flag that is passed around everywhere to denote changes to the routing table. The boolean flag is automatically updated now when changes actually occur, preventing issues where it got out of sync with actual changes to the routing table.
- records actual changes made to RoutingNodes so that primary term and in-sync allocation ids, which are part of index metadata, can be efficiently updated just by looking at the shards that were actually changed.
Currently both `PUT` and `POST` can be used to create indices. This commit
removes support for `POST index_name` so that we can use it to index documents
with auto-generated ids once types are removed.
Relates #15613
In addition to be an allocation decider, DiskThresholdDecider also
monitors the used disk in order to trigger a reroute when the thresholds
are crossed. This change splits out the settings for disk thresholds
into DiskThresholdSettings, and moves the monitoring to a new
DiskThresholdMonitor. DiskThresholdDecider is then in line with other
allocation deciders, needing only Settings and ClusterSettings for
construction, which will allow deguicing allocation deciders.
`LobObtainFailedException` should be reserved for on-disk locks that
Lucene attempts (like `write.lock`). This switches our in-memory
semaphore locks for shards to use a different exception. Additionally,
ShardLockObtainFailedException no longer subclasses IOException, since
no IO is being done is this case.
Resolves#19978
Currently plugins can not inspect or upgrade custom
meta data on startup. This commit allow plugins
to check and/or upgrade global custom meta data on startup.
Plugins can stop a node if any custom meta data is not supported.
The big change here is cleaning up the `TaskListResponse` so it doesn't
have a breaky `toString` implementation. That was causing the reindex
tests to break.
Also removed `NetworkModule#registerTaskStatus` which is part of the
Plugin API. Use `Plugin#getNamedWriteables` instead.
Primary shard allocation observes limits in forcing allocation
Previously, during primary shards allocation of shards
with prior allocation IDs, if all nodes returned a
NO decision for allocation (e.g. the settings blocked
allocation on that node), we would chose one of those
nodes and force the primary shard to be allocated to it.
However, this meant that primary shard allocation
would not adhere to the decision of the MaxRetryAllocationDecider,
which would lead to attempting to allocate a shard
which has failed N number of times already (presumably
due to some configuration issue).
This commit solves this issue by introducing the
notion of force allocating a primary shard to a node
and each decider implementation must implement whether
this is allowed or not. In the case of MaxRetryAllocationDecider,
it just forwards the request to canAllocate.
Closes#19446
Parsing a search request is currently split up among a number of
classes, using multiple public static methods, which take multiple
regstries of elements that may appear in the search request like query
parsers and aggregations. This change begins consolidating all this code
by collapsing the registries normally used for parsing search requests
into a single SearchRequestParsers class. It is also made available to
plugin services to enable templating of search requests. Eventually all
of the actual parsing logic should move to the class, and the registries
should be hidden, but for now they are at least co-located to reduce the
number of objects that must be passed around.
Jason Tedor
Lee Hinman
Nik Everett
Boaz Leskes
Ali Beyad
Simon Willnauer
Tanguy Leroux
Jay Modi
Yannick Welsch
Adrien Grand
Alexander Lin
Luca Cavanna
Ryan Ernst
Simon Willnauer
javanna
Jim Ferenczi
Nicholas Knize
Areek Zillur
gfyoung
Britta Weber
Michael Nitschinger
makeyang
Lee Hinman
Jun Ohtani
Tal Levy
Chris Earle
Igor Motov
Colin Goodheart-Smithe
Martijn van Groningen
Masaru Hasegawa
Clinton Gormley
qwerty4030
Xiang Chen
Mike McCandless
Michael McCandless
Jack Conradson
Thiago Souza