For cross cluster search alternate execution mode (see #32125), we will need to take a search request that spans across multiple clusters (based on index prefixes e.g. cluster1:index, cluster2:index etc.) and split it into multiple search requests to be sent to each cluster. A copy constructor added to `SearchRequest` would make that easy and well maintainable in the future.
Something along the same lines already happens in `BulkByScrollParallelizationHelper`, but the corresponding code went outdated as some new fields were added to `SearchRequest` which were not added to the bulk by scroll code. A copy constructor helps making the task of copying a search request maintainable over time.
* Add IntervalQueryBuilder with support for match and combine intervals
* Add relative intervals
* feedback
* YAML test - broekn
* yaml test; begin to add block source
* Add block; make disjunction its own source
* WIP
* Extract IntervalBuilder and add tests for it
* Fix eq/hashcode in Disjunction
* New yaml test
* checkstyle
* license headers
* test fix
* YAML format
* YAML formatting again
* yaml tests; javadoc
* Add OR test -> requires fix from LUCENE-8586
* Add docs
* Re-do API
* Clint's API
* Delete bash script
* doc fixes
* imports
* docs
* test fix
* feedback
* comma
* docs fixes
* Tidy up doc references to old rule
Today we assert that the fake node ID is greater than the real node's ID. In
fact we want to assert that it's greater than _all_ proper UUIDs. This adds
assertions to that effect.
* Adds deprecation logging to ScriptDocValues#getValues.
First commit addressing issue #22919.
`ScriptDocValues#getValues` was added for backwards compatibility but no
longer needed. Scripts using the syntax `doc['foo'].values` when
`doc['foo']` is a list should be using `doc['foo']` instead.
* Fixes two build errors in #34279
* Removes unused import in ScriptDocValuesDatesTest
* Removes used of `.values` in example in diversified-sampler-aggregation.asciidoc
* Removes use of .values from painless test.
Part of #34279
* Updates tests to use `doc[foo]` syntax rather than `doc[foo].values`.
* Removes use of `getValues()` and replaces use of `doc[foo].values` with `doc[foo]`.
* Indentation fix.
* Remove unnecessary list construction at previous `getValues()` callsite in ScriptDocValues.GeoPoints.
* Update migration doc and add link to `getValue` in ScriptDocValues javadoc.
* Fix compile
* Fix javadoc issue
* Removes ScriptDocValues#getValues usage from painless whitelist.
Today, ResyncTask.Status is not registered, but appears as a task status
sometimes, leading to `Failed to deserialize response from handler` exceptions:
java.lang.IllegalArgumentException: Unknown NamedWriteable [org.elasticsearch.tasks.Task$Status][resync]
This commit adds the missing registration.
ConcurrentHashMap does not always behave correctly if removing elements and
concurrently checking for its emptyiness. Work around this by protecting all
usages with a mutex (there was only one usage unprotected by the mutex anyway)
and then we don't even need a ConcurrentHashMap at all.
In order for CCS alternate execution mode (see #32125) to be able to do the final reduction step on the CCS coordinating node, we need to serialize additional info in the transport layer as part of the `SearchHits`, specifically:
- lucene `SortField[]` which contains info about the fields that sorting was performed on and their type, which depends on mappings (that the CCS node does not know about)
- collapse field (`String`) that field collapsing was executed on, if requested
- collapse values (`Object[]`) that field collapsing was based on, if requested
This info is needed to be able to reconstruct the `TopFieldDocs` or `CollapseFieldTopDocs` in the CCS coordinating node to feed the `mergeTopDocs` method and reduce multiple search responses received (one per cluster) into one.
This commit adds such information to the `SearchHits` class. It's nullable info that is not serialized through the REST layer. `SearchPhaseController` sets such info at the end of the hits reduction phase.
* Enable parallel restore operations
* Add uuid to restore in progress entries to uniquely identify them
* Adjust restore in progress entries to be a map in cluster state
* Added tests for:
* Parallel restore from two different snapshots
* Parallel restore from a single snapshot to different indices to test uuid identifiers are correctly used by `RestoreService` and routing allocator
* Parallel restore with waiting for completion to test transport actions correctly use uuid identifiers
In this test, we keep track of a list of index commits then verify that
we reload exactly every operation from the safe commit. If a background
merge is triggered, then we might have a new index commit which is not
recorded in the tracking list. This change disables merges in the test.
Closes#36470
A previous fix of a similar problem in #35201 wasn't general enough, we also
need to catch cases where the randomly generated query string starts with some
version of "now" and hits a date field.
Closes#36595
This commit adds deprecation warnings when using format specifiers with
joda data formats that will change with java time. It also adds the "8"
prefix which may be used to force the new java time format parsing.
The getters and setters for useDisMax() have been deprecated since at least 6.0,
also there hasn't been any reference to the query parameter in the
documentation. Removing it from the builder and tests and replacing it with
`tieBreaker(1.0f)` where necessary.
The commit changes how indices are closed in the MetaDataIndexStateService.
It now uses a 3 steps process where writes are blocked on indices to be closed,
then some verifications are done on shards using the TransportVerifyShardBeforeCloseAction
added in #36249, and finally indices states are moved to CLOSE and their routing
tables removed.
The closing process also takes care of using the pre-7.0 way to close indices if the
cluster contains mixed version of nodes and a node does not support the TransportVerifyShardBeforeCloseAction. It also closes unassigned indices.
Related to #33888
This commit turns MultiValuesSourceFieldConfig into a proper
ToXContentObject for easy testing and verification of its
to/from XContent methods.
Closes#36474.
We are attempting to replace the usage of the `MockTcpTransport` with
the `MockNioTransport`. This commit replaces usages of
`MockTcpTransport` in two zen test cases.
When a security manager is present, the JVM will cache positive hostname
lookups indefinitely. This can be problematic, especially in the modern
world with cloud services where DNS addresses can change, or
environments using Docker containers where IP addresses could be
considered ephemeral. This behavior impacts cluster discovery,
cross-cluster replication and cross-cluster search, reindex from remote,
snapshot repositories, webhooks in Watcher, external authentication
mechanisms, and the Elastic Stack Monitoring Service. The experience of
watching a DNS lookup change yet not be reflected within Elasticsearch
is a poor experience for users. The reason the JVM has this is guard
against DNS cache posioning attacks. Yet, there is already a defense in
the modern world against such attacks: TLS. With proper certificate
validation, even if a resolver falls prey to a DNS cache poisoning
attack, using TLS would neuter the attack. Therefore we have a policy
with dubious security value that significantly impacts usability. As
such we make the usability/security tradeoff towards usability, since
the security risks are very low. This commit introduces new system
properties that Elasticsearch observes to override the JVM DNS cache
policy.
Previously persistent task assignment was checked in the
following situations:
- Persistent tasks are changed
- A node joins or leaves the cluster
- The routing table is changed
- Custom metadata in the cluster state is changed
- A new master node is elected
However, there could be situations when a persistent
task that could not be assigned to a node could become
assignable due to some other change, such as memory
usage on the nodes.
This change adds a timed recheck of persistent task
assignment to account for such situations. The timer
is suspended while checks triggered by cluster state
changes are in-flight to avoid adding burden to an
already busy cluster.
Closes#35792
* We should compare the target value with the to be applied value before interpreting the update as a change
* This speeds up the test failing in #36496 considerably by preventing state updates on noop setting updates
This commit add support to engine operations for resolving and verifying the sequence number and
primary term of the last modification to a document before performing an operation. This is
infrastructure to move our (optimistic concurrency control)[http://en.wikipedia.org/wiki/Optimistic_concurrency_control] API to use sequence numbers instead of internal versioning.
Relates #36148
Relates #10708
There are certain BootstrapCheck checks that may need access environment-specific
values. Watcher's EncryptSensitiveDataBootstrapCheck passes in the node's environment
via a constructor to bypass the shortcoming in BootstrapContext. This commit
pulls in the node's environment into BootstrapContext.
Another case is found in #36519, where it is useful to check the state of the
data-path. Since PathUtils.get and Paths.get are forbidden APIs, we rely on
the environment to retrieve references to things like node data paths.
This means that the BootstrapContext will have the same Settings used in the
Environment, which currently differs from the Node's settings.
data files under the cluster name subdirectory has been deprecated and was
meant to be removed in 6.0. This commit removes some leftover referrences to
these paths.
Includes the following:
* Reversion of doc-values changes in LUCENE-8374; we are interested in seeing if this
has an effect on benchmarks for node-stats and index-stats
* More improvements to docvalues updates
* Make sure to test conversion for both typed and typeless HLRC requests.
* Update a few more statements to deprecatedAndMaybeLog.
* Make sure Rest*SearchTemplateActionTests extend RestActionTestCase.
Currently TransportRequestOptions allows specific requests to request
compression. This commit removes this and always compresses based on the
settings. Additionally, it removes TransportResponseOptions as they
are unused.
This closes#36399.
* Fix CorruptFileIT to also take last DV generation into account
We currently only prune old .liv generations. With soft_deletes it's important
to also prune DV generations.
* Fix CorruptionUtils to skip the footer bytes after the checksum is read.
Today we read a broken checksum since we also checksum the 8 footer bytes that include
the checksum algorithm and the footer magic.
Closes#36526
Currently, the `BytesStreamOutput` always zeros out the underlying byte
pages when they are acquired. This should not be necessary as the stream
overwrites the underlying bytes as serialization occurs.
`PageCacheRecycler` is the class that creates and holds pages of arrays
for various uses. `BigArrays` is just one user of these pages. This
commit moves the constants that define the page sizes for the recycler
to be on the recycler class.
This commit moves the node field in the JoinRequest object to be a
private field, adding a dedicated accessor. This is a minor breaking
change in that it is no longer possible for all callers to overwrite
this field, but that is a feature.
This commit moves the MergedDateFormatter to a package private class and
reworks joda DateFormatter instances to use that instead of a single
DateTimeFormatter with multiple parsers. This will allow the java and
joda multi formats to share the same format parsing method in a
followup.
Currently our handshake requests do not include a version. This is
unfortunate as we cannot rely on the stream version since it is not the
sending node's version. Instead it is the minimum compatibility version.
The handshake request is currently empty and we do nothing with it. This
should allow us to add data to the request without breaking backwards
compatibility.
This commit adds the version to the handshake request. Additionally, it
allows "future data" to be added to the request. This allows nodes to craft
a version compatible response. And will properly handle additional data in
future handshake requests. The proper handling of "future data" is useful
as this is the only request where we do not know the other node's version.
Finally, it renames the TcpTransportHandshaker to
TransportHandshaker.
This commit contains a few minor changes to our search code:
- adjust the visibility of a couple of methods in our search code to package private from public or protected.
- make some of the `SearchPhaseController` methods static where possible
- rename one of the `SearchPhaseController#reducedQueryPhase` methods (used only for scroll requests) to `reducedScrollQueryPhase` without the `isScrollRequest` argument which was always set to `true`
- replace leniency in `SearchPhaseController#setShardIndex` with an assert to make sure that we never set the shard index twice
- remove two null checks where the checked field can never be null
- resolve an unchecked warning
- replace `List#toArray` invocation that creates an array providing the true size with array creation of length 0
- correct a couple of typos in comments
The different `DocValueFormat` implementors throw `UnsupportedOperationException` for methods that they don't support. That is perfectly fine, and quite common as not all implementors support all of the possible formats. This makes it hard though to trace back which implementors support which formats as they all implement the same methods.
This commit introduces default methods in the `DocValueFormat` interface so that all methods throw `UnsupportedOperationException` by default. This way implementors can override only the methods that they specifically support.
This commit modifies BigArrays to take a circuit breaker name and
the circuit breaking service. The default instance of BigArrays that
is passed around everywhere always uses the request breaker. At the
network level, we want to be using the inflight request breaker. So this
change will allow that.
Additionally, as this change moves away from a single instance of
BigArrays, the class is modified to not be a Releasable anymore.
Releasing big arrays was always dispatching to the PageCacheRecycler,
so this change makes the PageCacheRecycler the class that needs to be
managed and torn-down.
Finally, this commit closes#31435 be making the serialization of
transport messages use the inflight request breaker. With this change,
we no longer push the global BigArrays instnace to the network level.
Today the Zen2 coordinator only applies a write block when there is no known
elected master, ignoring the `discovery.zen.no_master_block` setting. This
commit resolves this, applying the correct block according to the configuration
instead.
Today we do not enforce soft-deletes when accessing the Lucene changes
snapshot. This might lead to internal errors because we assume
soft-deletes are enabled in that code path.
1. CCR tests work without any changes
2. `testDanglingIndices` require changes the source code (added TODO).
3. `testIndexDeletionWhenNodeRejoins` because it's using just two
nodes, adding the node to exclusions is needed on restart.
4. `testCorruptTranslogTruncationOfReplica` starts dedicated master
one, because otherwise, the cluster does not form, if nodes are stopped
and one node is started back.
5. `testResolvePath` needs TEST cluster, because all nodes are stopped
at the end of the test and it's not possible to perform checks needed
by SUITE cluster.
6. `SnapshotDisruptionIT`. Without changes, the test fails because Zen2
retries snapshot creation as soon as network partition heals. This
results into the race between creating snapshot and test cleanup logic
(deleting index). Zen1 on the
other hand, also schedules retry, but it takes some time after network
partition heals, so cleanup logic executes latter and test passes. The
check that snapshot is eventually created is added to
the end of the test.
Today we log a slightly cryptic "cluster bootstrapping is disabled on this
node" message if bootstrapping hasn't been configured. Since there is today
only one way to bootstrap the cluster it seems preferable to spell out exactly
which setting is missing.
* Lower fielddata circuit breaker default limit
Lower fielddata circuit breaker default limit from 60% to 40% as we have
moved to doc_values for most of the cases.
* merge master in
* update tests
* update docs
Deals with a situation where a follower becomes disconnected from the leader, but only for such a
short time where it becomes candidate and puts up a NO_MASTER_BLOCK, but then receives a
follower check from the leader. If the leader does not notice the node disconnecting, it is important
for the node not to be turned back into a follower but try and join the leader again.
We still should prefer the node into a follower on a follower check when this follower check triggers
a term bump as this can help during a leader election to quickly have a leader turn all other nodes
into followers, even before the leader has had the chance to transfer a possibly very large cluster
state.
Closes#36428
The following updates were made:
- Add a new untyped endpoint `{index}/_explain/{id}`.
- Add deprecation warnings to Rest*Action, plus tests in Rest*ActionTests.
- For each REST yml test, make sure there is one version without types, and another legacy version that retains types (called *_with_types.yml).
- Deprecate relevant methods on the Java HLRC requests/ responses.
- Update documentation (for both the REST API and Java HLRC).
This commit converts the watcher execution context to use the joda
compat java time objects. It also again removes the joda methods from
the painless whitelist.
For each API, the following updates were made:
- Add deprecation warnings to `Rest*Action`, plus tests in `Rest*ActionTests`.
- For each REST yml test, make sure there is one version without types, and another legacy version that retains types (called *_with_types.yml).
- Deprecate relevant methods on the Java HLRC requests/ responses.
- Update documentation (for both the REST API and Java HLRC).
Allow `auto_date_histogram` as a valid parent agg for derivative,
cumulative sum, moving average, moving function and serial
differencing pipeline aggregations.
Since all these aggs share the same requirement (sequentially
ordered parent aggs), this commit also refactors to share
the same validation code so that any newly added aggs won't
be forgotten.
Closes#35578
This change adds a way to provide the content type of the rest serialization
tests when creating random instances. This is used by SearchHitsTests to ensure
that the internal members of the class are created with the same xContentType
and that equals can be used to compare an instances created from an XContent
view.
Today the `GetDiscoveredNodesAction` waits, possibly indefinitely, to discover
enough nodes to bootstrap the cluster. However it is possible that the cluster
forms before a node has discovered the expected collection of nodes, in which
case the action will wait indefinitely despite the fact that it is no longer
required.
This commit changes the behaviour so that the action fails once a node receives
a cluster state with a nonempty configuration, indicating that the cluster has
been successfully bootstrapped and therefore the `GetDiscoveredNodesAction`
need wait no longer.
Relates #36380 and #36381; reverts 558f4ec278.
This commit creates JodaDateFormatter to replace
FormatDateTimeFormatter. It converts all uses of the old class
to DateFormatter to allow a future change to use JavaDateFormatter
when appropriate.
Moves all remaining (rolling-upgrade and mixed-version) REST tests to use Zen2. To avoid adding
extra configuration, it relies on Zen2 being set as the default discovery type. This required a few
smaller changes in other tests. I've removed AzureMinimumMasterNodesTests which tests Zen1
functionality and dates from a time where host providers were not configurable and each cloud
plugin had its own discovery.type, subclassing the ZenDiscovery class. I've also adapted a few tests
which were unnecessarily adding addTestZenDiscovery = false for the same legacy reasons. Finally,
this also moves the unconfigured-node-name REST test to Zen2, testing the auto-bootstrapping
functionality in development mode when no discovery configuration is provided.
Today we expose a new engine immediately during Lucene rollback. The new
engine is started with a safe commit which might not include all
acknowledged operation. With this change, we won't expose the new engine
until it has recovered from the local translog.
Note that this solution is not complete since it's able to reserve only
acknowledged operations before the global checkpoint. This is because we
replay translog up to the global checkpoint during rollback. A per-doc
Lucene rollback would solve this issue entirely.
Relates #32867
Today, we iterate the bitset of hardLiveDocs to calculate the number of
live docs. This calculation might be expensive if we enable soft-deletes
(by default) for old indices whose soft-deletes was disabled previously
and had hard-deletes.
Once soft-deletes is enabled, we no longer hard-update or hard-delete
documents directly. We have hard-deletes in two scenarios: (1) from old
segments where soft-deletes was disabled, (2) when IndexWriter hits
non-aborted exceptions. These two cases, IW flushes SegmentInfos before
exposing the hard-deletes; thus we can use the hard-delete count of
SegmentInfos.
Creating `CompositeBytesReference` has more overhead than a single
`ByteBufferReference`. Many of our messages will be contained to a
single `ByteBuffer`. This commit avoids creating composite instances
when there is 0 or 1 underlying `ByteBuffers`.
We support rolling upgrades from Zen1 by keeping the master as a Zen1 node
until there are no more Zen1 nodes in the cluster, using the following
principles:
- Zen1 nodes will never vote for Zen2 nodes
- Zen2 nodes will, while not bootstrapped, vote for Zen1 nodes
- Zen2 nodes that were previously part of a mixed cluster will automatically
(and unsafely) bootstrap themselves when the last Zen1 node leaves.
This commit makes FormatDateTimeFormatter and DateFormatter apis close
to each other, so that the former can be removed in favor of the latter.
This PR does not change the uses of FormatDateTimeFormatter yet, so that
that future change can be purely mechanical.
This is related to #35975. It implements a basic restore functionality
for the CcrRepository. When the restore process is kicked off, it
configures the new index as expected for a follower index. This means
that the index has a different uuid, the version is not incremented, and
the Ccr metadata is installed.
When the restore shard method is called, an empty shard is initialized.
This commit removes the parseDefaulting method from DateFormatter,
bringing it more inline with the joda equivalent
FormatDateTimeFormatter. This method was only needed for the java
time implementation of DateMathParser. Instead, a DateFormatter now
returns an implementation of DateMathParser for the given format,
allowing the java time implementation to construct the appropriate date
math parser internally.
* Add warning if cluster fails to form fast enough
Today if a leader is not discovered or elected then nodes are essentially
silent at INFO and above, and log copiously at DEBUG and below. A short delay
when electing a leader is not unusual, for instance if other nodes have not yet
started, but a persistent failure to elect a leader is a problem worthy of log
messages in the default configuration.
With this change, while there is no leader each node outputs a WARN-level log
message every 10 seconds (by default) indicating as such, describing the
current discovery state and the current quorum(s).
* Add note about whether the discovered nodes form a quorum or not
* Introduce separate ClusterFormationFailureHelper
... and back out the unnecessary changes elsewhere
* It can be volatile
In #34474, we added a new assertion to ensure that the
LocalCheckpointTracker is always consistent with Lucene index. However,
we reset LocalCheckpoinTracker in testDedupByPrimaryTerm cause this
assertion to be violated.
This commit removes resetCheckpoint from LocalCheckpointTracker and
rewrites testDedupByPrimaryTerm without resetting the local checkpoint.
Relates #34474
Add support for inlined user dictionary in Nori
This change adds a new option called `user_dictionary_rules` to the
Nori a tokenizer`. It can be used to set additional tokenization rules
to the Korean tokenizer directly in the settings (instead of using a file).
Closes#35842
In real deployments it is important that clusters are properly configured to
avoid accidentally forming multiple independent clusters at cluster
bootstrapping time. However we also expect to be able to unpack Elasticsearch
and start up one or more nodes without any up-front configuration, and have
them do their best to find each other and form a cluster after a few seconds.
This change adds a delayed automatic bootstrapping process to nodes that start
up with no relevant settings set to support the desired out-of-the-box
experience without compromising safety in properly-configured deployments.
The conversion of timezones in JodaCompatibleZonedDateTime from joda to
java time requires the use of the DateUtils class to cater for corner
cases.
Closes#36306
This pull request adds the TransportShardCloseAction which is a
transport replication action that acquires all index shard permits for
its execution. This action will be used in the future by the
MetaDataIndexStateService in a new index closing process, where
we need to execute some sanity checks before closing an index.
The action executes the following verifications on the primary and replicas:
* there is no other on going operation active on the shard
* the data node holding the shard knows that the index is blocked for writes
* the shard's max sequence number is equal to the global checkpoint
When the verifications are done and successful, the shard is flushed.
Relates #33888
Includes:
LUCENE-8594: DV update are broken for updates on new field
LUCENE-8590: Optimize DocValues update datastructures
LUCENE-8593: Specialize single value numeric DV updates
Relates #36286
The test testLookupSeqNoByIdInLucene fails because it expects if any
change should be visible after a flush. However, that flush might be
ignored if the waitIfOngoing parameter is false (the default value), and
there is an ongoing flush triggered after merge is running.
Closes#35823
This commit moves back to use explicit dependsOn for test tasks on
check. Not all tasks extending RandomizedTestingTask should be run by
check directly.
* Add deprecation warnings to `Rest*TermVectorsAction`, plus tests in `Rest*TermVectorsActionTests`.
* Deprecate relevant methods on the Java HLRC requests/ responses.
* Update documentation (for both the REST API and Java HLRC).
* For each REST yml test, create one version without types, and another legacy version that retains types (called *_with_types.yml).
* Merging the zen2 branch has made it impossible to reproduce the test failure here, likely as a result of the state now being written atomically
* Closes#36189
Some IDEs (specifically Eclipse 4.8.0) needs some explicit casting for type
inference. This was added in a recent change but we should also have comments so
we remember why this needs to be there (at least for now).
Currently, we only log that WriteStateException has occurred, in
GatewayMetaState.
This PR goal is to re-throw WriteStateException to upper layers.
If dirty flag is set to false, we wrap WriteStateException in
UncheckedIOException, we prefer unchecked exception not to add
explicit throws in the multitude of layers.
If dirty flag is set to true - the world is broken. And we need to
halt the JVM. Instead of explicit halting in GatewayMetaState, we
prefer to throw IOError, which will be subsequently handled by
ElasticsearchUncaughtExceptionHandler and JVM will be halted.
This PR also adds tests for WriteStateException.
Luca Cavanna
Alan Woodward
David Turner
Jeff Hajewski
Armin Braun
Nhat Nguyen
Christoph Büscher
Daniel Mitterdorfer
Ryan Ernst
Tanguy Leroux
Tal Levy
Tim Brooks
Jason Tedor
Igor Motov
David Roberts
Boaz Leskes
Mayya Sharipova
Julie Tibshirani
Simon Willnauer
Martijn van Groningen
Andrey Ershov
Christian Schneider
Yu
Yannick Welsch
Jernej Klancic
Jim Ferenczi
Igor Suhorukov
Adrien Grand
Alexander Reelsen