Switches "discovery.type: single-node" from using a separate implementation for single-node discovery to using the existing standard discovery implementation, with two small adaptions:
- auto-bootstrapping, but requiring initial_master_nodes not to be set.
- not actively pinging other nodes using the Peerfinder
- not allowing other nodes to join its single-node cluster (if they have e.g. been set up using regular discovery and connect to the single-disco node).
Currently there are some components of message serializer and sending
that still occur in TcpTransport. This commit makes it possible to
send a message without the TcpTransport by moving all of the remaining
application logic to the OutboundHandler. Additionally, it adds unit
tests to ensure that this logic works as expected.
Currently the TransportMessageListener is applied and used in the
Transport class. However, local requests and responses never make it to
this class. This PR moves the listener add/remove methods to the
TransportService. After this change the Transport can only have one
listener set with it. This one listener is the TransportService, which
will then propogate the events to the external listeners.
Additionally this commit back ports #40237
Remove Tracer from MockTransportService
Currently the TransportMessageListener is applied and used in the
Transport class. However, local requests and responses never make it to
this class. This PR moves the listener add/remove methods to the
TransportService. After this change the Transport can only have one
listener set with it. This one listener is the TransportService, which
will then propogate the events to the external listeners.
FilterDirectory.getPendingDeletions does not delegate, fixed
temporarily by overriding in StoreDirectory.
This in turn caused duplicate file name use after a trimUnsafeCommits
had been done, since a new IndexWriter would not consider the pending
deletes in IndexFileDeleter. This should only happen on windows (AFAIK).
Reenabled doing index updates for all tests using
IndexShardTests.indexOnReplicaWithGaps (which could fail due to above
when using mocked WindowsFS).
Added getPendingDeletions delegation to all elasticsearch
FilterDirectory subclasses that were not trivial test-only overrides to
minimize the risk of hitting this issue in another case.
* Mistake was made in #39662
* The response deserialized here is `org.elasticsearch.action.admin.cluster.snapshots.get.GetSnapshotsResponse` which uses `org.elasticsearch.snapshots.SnapshotInfo` which uses `org.elasticsearch.snapshots.SnapshotState` and not the shard state
If a replica were first reset due to one primary failover and then
promoted (before resync completes), its MSU would not include changes
since global checkpoint, leading to errors during translog replay.
Fixed by re-initializing MSU before restoring local history.
Unlike index operations which can fail at the document level to
analyzing errors, delete operations should never fail at the document
level whether soft-deletes is enabled or not. With this change, we will
always fail the engine if we fail to apply a delete operation to Lucene.
Closes#33256
We introduced WAIT_CLUSTERSTATE action in #19287 (5.0), but then stopped
using it since #25692 (6.0). This change removes that action and related
code in 7.x and 8.0.
Relates #19287
Relates #25692
When the method ensureGreen in QA tests is timed out, it does not
provide enough info for us to investigate why the testing index is
not green yet. With this change, we will dump the cluster state if
ensureGreen timed out.
Relates #32027
This PR introduces AsyncRecoveryTarget which executes remote calls of
peer recovery asynchronously. In this change, we also add a new
assertion to ensure that method sendBatch, which sends a batch of
history operations in phase2, is never called recursively on the same
thread. This new assertion will also be used in method sendFileChunks.
This commit unmutes NetworkDisruptionIT.
It makes changes necessary for Zen2 - avoids usage of
autoMinMasterNodes and selects cluster size, such that there is no
need to call AddVotingExclusion.
This test also introduces refactors a single method
prepareDistruptedCluster to be used by both test methods.
Unfortunately, NetworkDisruption is broken and the
testNetworkPartitionRemovalRestoresConnections "is fixed" by
introducing assertBusy - #38348.
Relates #36205
Relates #38348
(cherry picked from commit 97707c7f892636e5b75c3df546b067414acb27cd)
This change adds a wrapper for IndexSearcher that makes IndexSearcher#search(List, Weight, Collector) visible by
sub-classes. The wrapper is used by the ContextIndexSearcher to call this protected method on a searcher created by a plugin.
This ensures that an override of the protected method in an IndexSearcherWrapper plugin is called when a search is executed.
Closes#30758
Currently, we maintain a transport name ("mock-nio", "nio", "netty")
that is passed to a `TcpTransportChannel` when a request is received.
The value of this name is to associate with the task when we register a
task with the task manager. However, it is only possible to run ES with
one transport, so having an implementation specific name is unnecessary.
This commit removes the name and replaces it with the generic
"transport".
Today we load the shard history retention leases from disk whenever opening the
engine, and treat a missing file as an empty set of leases. However in some
cases this is inappropriate: we might be restoring from a snapshot (if the
target index already exists then there may be leases on disk) or
force-allocating a stale primary, and in neither case does it make sense to
restore the retention leases from disk.
With this change we write an empty retention leases file during recovery,
except for the following cases:
- During peer recovery the on-disk leases may be accurate and could be needed
if the recovery target is made into a primary.
- During recovery from an existing store, as long as we are not
force-allocating a stale primary.
Relates #37165
Computing the compressed size of the cluster state on every invocation
of cluster:monitor/state action is expensive, and the value of this
field is dubious anyway. Therefore we want to remove computing this
field. As a first step, we stop computing and return this field by
default. To avoid breaking users, we will give them a system property to
use to tide them over until the next major release when we will actually
remove this field. This comes with a deprecation warning too, and the
backport to the appropriate minor will also include a note in the
migration guide. There will be a follow-up to remove this field in the
next major version.
Today, when applying new cluster state we attempt to connect to all of its
nodes as a blocking part of the application process. This is the right thing to
do with new nodes, and is a no-op on any already-connected nodes, but is
questionable on known nodes from which we are currently disconnected: there is
a risk that we are partitioned from these nodes so that any attempt to connect
to them will hang until it times out. This can dramatically slow down the
application of new cluster states which hinders the recovery of the cluster
during certain kinds of partition.
If nodes are disconnected from the master then it is likely that they are to be
removed as part of a subsequent cluster state update, so there's no need to try
and reconnect to them like this. Moreover there is no need to attempt to
reconnect to disconnected nodes as part of the cluster state application
process, because we periodically try and reconnect to any disconnected nodes,
and handle their disconnectedness reasonably gracefully in the meantime.
This commit alters this behaviour to avoid reconnecting to known nodes during
cluster state application.
Resolves#29025.
Recently we have had a number of test issues related to blocking
activity occuring on the io thread. This commit adds a log warning for
when handling event takes a >150 milliseconds. This is implemented
for the MockNioTransport which is the transport used in
ESIntegTestCase.
* Back port build changes from #39102
This back-ports how versions are determined and bwc test are set up from
#39102 without enabling the bwc from current version tests so it's
easier/possible to backmerge future buld changes.
It's expected that the tets are lacking many of the required fixes in
this version to enable them.
* Wipe Snapshots Before Indices in RestTests
* If we have a snapshot ongoing from the previous test and enter this method, then deleting the indices fails, which in turn fails the whole wipe
* Fixed by first deleting/aborting snapshots
Today when a replicated write operation fails to execute on a replica,
the primary will reach out to the master to fail that replica (and mark
it stale). We then won't ack that request until the master removes the
failing replica; otherwise, we will lose the acked operation if the
failed replica is still in the in-sync set. However, if a node with the
primary is shutting down, we might ack such request even though we are
unable to send a shard-failure request to the master. This happens
because we ignore NodeClosedException which is triggered when the
ClusterService is being closed.
Closes#39467
Lucene added an optimization to leave the term dictionary on disk
for non-id like fields. This change happened very late in the release
processes such that it's better to have an escape hatch if certain
use-cases are hurt by this optimization. This setting might be
removed in the future if it turns out to be unnecessary.
When a node is joining the cluster we ensure that it can send requests to the
master _at that time_. If it joins the cluster and _then_ loses the ability to
send requests to the master then it should be removed from the cluster. Today
this is not the case: the master can still receive responses to its follower
checks, and receives acknowledgements to cluster state publications, so has no
reason to remove the node.
This commit changes the handling of follower checks so that they fail if they
come from a master that the other node was following but which it now believes
to have failed.
* Optimize Bulk Message Parsing and Message Length Parsing
* findNextMarker took almost 1ms per invocation during the PMC rally track
* Fixed to be about an order of magnitude faster by using Netty's bulk `ByteBuf` search
* It is unnecessary to instantiate an object (the input stream wrapper) and throw it away, just to read the `int` length from the message bytes
* Fixed by adding bulk `int` read to BytesReference
Backport support for replicating closed indices (#39499)
Before this change, closed indexes were simply not replicated. It was therefore
possible to close an index and then decommission a data node without knowing
that this data node contained shards of the closed index, potentially leading to
data loss. Shards of closed indices were not completely taken into account when
balancing the shards within the cluster, or automatically replicated through shard
copies, and they were not easily movable from node A to node B using APIs like
Cluster Reroute without being fully reopened and closed again.
This commit changes the logic executed when closing an index, so that its shards
are not just removed and forgotten but are instead reinitialized and reallocated on
data nodes using an engine implementation which does not allow searching or
indexing, which has a low memory overhead (compared with searchable/indexable
opened shards) and which allows shards to be recovered from peer or promoted
as primaries when needed.
This new closing logic is built on top of the new Close Index API introduced in
6.7.0 (#37359). Some pre-closing sanity checks are executed on the shards before
closing them, and closing an index on a 8.0 cluster will reinitialize the index shards
and therefore impact the cluster health.
Some APIs have been adapted to make them work with closed indices:
- Cluster Health API
- Cluster Reroute API
- Cluster Allocation Explain API
- Recovery API
- Cat Indices
- Cat Shards
- Cat Health
- Cat Recovery
This commit contains all the following changes (most recent first):
* c6c42a1 Adapt NoOpEngineTests after #39006
* 3f9993d Wait for shards to be active after closing indices (#38854)
* 5e7a428 Adapt the Cluster Health API to closed indices (#39364)
* 3e61939 Adapt CloseFollowerIndexIT for replicated closed indices (#38767)
* 71f5c34 Recover closed indices after a full cluster restart (#39249)
* 4db7fd9 Adapt the Recovery API for closed indices (#38421)
* 4fd1bb2 Adapt more tests suites to closed indices (#39186)
* 0519016 Add replica to primary promotion test for closed indices (#39110)
* b756f6c Test the Cluster Shard Allocation Explain API with closed indices (#38631)
* c484c66 Remove index routing table of closed indices in mixed versions clusters (#38955)
* 00f1828 Mute CloseFollowerIndexIT.testCloseAndReopenFollowerIndex()
* e845b0a Do not schedule Refresh/Translog/GlobalCheckpoint tasks for closed indices (#38329)
* cf9a015 Adapt testIndexCanChangeCustomDataPath for replicated closed indices (#38327)
* b9becdd Adapt testPendingTasks() for replicated closed indices (#38326)
* 02cc730 Allow shards of closed indices to be replicated as regular shards (#38024)
* e53a9be Fix compilation error in IndexShardIT after merge with master
* cae4155 Relax NoOpEngine constraints (#37413)
* 54d110b [RCI] Adapt NoOpEngine to latest FrozenEngine changes
* c63fd69 [RCI] Add NoOpEngine for closed indices (#33903)
Relates to #33888
This adds a `details` parameter to shard locking in `NodeEnvironment`. This is
intended to be used for diagnosing issues such as
```
1> [2019-02-11T14:34:19,262][INFO ][o.e.c.m.MetaDataDeleteIndexService] [node_s0] [.tasks/oSYOG0-9SHOx_pfAoiSExQ] deleting index
1> [2019-02-11T14:34:19,279][WARN ][o.e.i.IndicesService ] [node_s0] [.tasks/oSYOG0-9SHOx_pfAoiSExQ] failed to delete index
1> org.elasticsearch.env.ShardLockObtainFailedException: [.tasks][0]: obtaining shard lock timed out after 0ms
1> at org.elasticsearch.env.NodeEnvironment$InternalShardLock.acquire(NodeEnvironment.java:736) ~[main/:?]
1> at org.elasticsearch.env.NodeEnvironment.shardLock(NodeEnvironment.java:655) ~[main/:?]
1> at org.elasticsearch.env.NodeEnvironment.lockAllForIndex(NodeEnvironment.java:601) ~[main/:?]
1> at org.elasticsearch.env.NodeEnvironment.deleteIndexDirectorySafe(NodeEnvironment.java:554) ~[main/:?]
```
In the hope that we will be able to determine why the shard is still locked.
Relates to #30290 as well as some other CI failures
there are testing situations where newly created indices
are being wiped before they are fully initialized. This results
in an edge-case in the shard-locking strategy where an index
cannot be deleted.
This should fix that
Currently there are two security tests that specifically target the
netty security transport. This PR moves the client authentication tests
into `AbstractSimpleSecurityTransportTestCase` so that the nio transport
will also be tested.
Additionally the work to build transport configurations is moved out of
the netty transport and tested independently.
This commit is the final piece of the integration of CCR with retention
leases. Namely, we periodically renew retention leases and advance the
retaining sequence number while following.
With this change, we won't wait for the local checkpoint to advance to
the max_seq_no before starting phase2 of peer-recovery. We also remove
the sequence number range check in peer-recovery. We can safely do these
thanks to Yannick's finding.
The replication group to be used is currently sampled after indexing
into the primary (see `ReplicationOperation` class). This means that
when initiating tracking of a new replica, we have to consider the
following two cases:
- There are operations for which the replication group has not been
sampled yet. As we initiated the new replica as tracking, we know that
those operations will be replicated to the new replica and follow the
typical replication group semantics (e.g. marked as stale when
unavailable).
- There are operations for which the replication group has already been
sampled. These operations will not be sent to the new replica. However,
we know that those operations are already indexed into Lucene and the
translog on the primary, as the sampling is happening after that. This
means that by taking a snapshot of Lucene or the translog, we will be
getting those ops as well. What we cannot guarantee anymore is that all
ops up to `endingSeqNo` are available in the snapshot (i.e. also see
comment in `RecoverySourceHandler` saying `We need to wait for all
operations up to the current max to complete, otherwise we can not
guarantee that all operations in the required range will be available
for replaying from the translog of the source.`). This is not needed,
though, as we can no longer guarantee that max seq no == local
checkpoint.
Relates #39000Closes#38949
Co-authored-by: Yannick Welsch <yannick@welsch.lu>
* The lambda invoked by the `lockedExecutor` eventually gets JITed (which runs a static initializer that we will suspend in with a very tiny chance).
* Fixed by creating the `Runnable` in the main test thread and using the same instance in all threads
* Closes#35686
Currently remote compression and ping schedule settings are dynamic.
However, we do not listen for changes. This commit adds listeners for
changes to those two settings. Additionally, when those settings change
we now close existing connections and open new ones with the settings
applied.
Fixes#37201.
* Simplify and Fix Synchronization in InternalTestCluster (#39168)
* Remove unnecessary `synchronized` statements
* Make `Predicate`s constants where possible
* Cleanup some stream usage
* Make unsafe public methods `synchronized`
* Closes#37965
* Closes#37275
* Closes#37345
There may be situations where indices have not yet been closed from a Lucene
perspective, causing the breaker to not immediately be at 0
Relates to #30290
This commit introduces the retention leases to ESIndexLevelReplicationTestCase,
then adds some tests verifying that the retention leases replication works
correctly in spite of the presence of the primary failover or out of order
delivery of retention leases sync requests.
Relates #37165
Rollup jobs should be stopped + deleted before the indices are removed.
It's possible for an active rollup job to issue a bulk request, the test
ends and the cleanup code deletes all indices. The in-flight bulk
request will then stall + error because the index no-longer exists...
but this process might take longer than the StopRollup timeout.
Which means the test fails, and often fails several other tests since
the job is still active (e.g. other tests cannot create the same-named
job, or fail to stop the job in their cleanup because it's still stalled).
This tends to knock over several tests before the bulk finally times
out and the job shuts down.
Instead, we need to simply stop jobs first. Inflight bulks will resolve
quickly, and we can carry on with deleting indices after the jobs are
confirmed inactive.
stop-job.asciidoc tended to trigger this issue because it executed
an async stop API and then exited, which setup the above situation. In
can and did happen with other tests though. As an extra precaution,
the doc test was modified to substitute in wait_for_completion
to help head off these issues too.
* Disable specific locales for tests in fips mode
The Bouncy Castle FIPS provider that we use for running our tests
in fips mode has an issue with locale sensitive handling of Dates as
described in https://github.com/bcgit/bc-java/issues/405
This causes certificate validation to fail if any given test that
includes some form of certificate validation happens to run in one
of the locales. This manifested earlier in #33081 which was
handled insufficiently in #33299
This change ensures that the problematic 3 locales
* th-TH
* ja-JP-u-ca-japanese-x-lvariant-JP
* th-TH-u-nu-thai-x-lvariant-TH
will not be used when running our tests in a FIPS 140 JVM. It also
reverts #33299
Today when processing an operation on a replica engine (or the
following engine), we first add it to Lucene, then add it to translog,
then finally marks its seq_no as completed. If a flush occurs after step1,
but before step-3, the max_seq_no in the commit's user_data will be
smaller than the seq_no of some documents in the Lucene commit.
This test failed on 7.1 when running full cluster restart tests against pre-7.0
clusters (e.g. 6.6 clusters). The fixes the expected type in the
templates after the cluster restart.
Backport of #38903
When tearing down from `ESSingleNodeTestCase` we perform a delete on "*"
indices, it some cases, however, those indices are not fully deleted. Rather
than have a failure occur later down the change (see:
https://github.com/elastic/elasticsearch/issues/30290#issuecomment-463589008 )
the failure should occurr immediately so it can be diagnosed more easily.
Instead of using `WarningsHandler.PERMISSIVE`, we only match warnings
that are due to types removal.
This PR also renames `allowTypeRemovalWarnings` to `allowTypesRemovalWarnings`.
Relates to #37920.
There were two documents (seq=2 and seq=103) missing on the follower in
one of the failures of `testFailOverOnFollower`. I spent several hours
on that failure but could not figure out the reason. I adjust log and
unmute this test so we can collect more information.
Relates #38633
Adds the ability to fetch chunks from different files in parallel, configurable using the new `ccr.indices.recovery.max_concurrent_file_chunks` setting, which defaults to 5 in this PR.
The implementation uses the parallel file writer functionality that is also used by peer recoveries.
When we are preparing to release a major version the rules around
"unreleased" versions and branches get a bit more complex.
This change implements the following rules:
- If the tip version on the previous major is a .0 (e.g. 6.7.0) then
the tip of the minor before that (e.g. 6.6.1) must be unreleased.
(This is because 6.7.0 would be "staged" in preparation for release,
but 6.6.1 would be open for bug fixes on the release 6.6.x line)
(in VersionCollection & VersionUtils)
- The "major.x" branch (if it exists) will always point to the latest
minor in that series. Anything that is not the latest minor, must
therefore be on a the "major.minor" branch
For example, if v7.1.0 exists then the "7.x" branch must be 7.1.0,
and 7.0.0 must be on the "7.0" branch
(in VersionCollection)
This commit adds the 7.1 version constant to the 7.x branch.
Co-authored-by: Andy Bristol <andy.bristol@elastic.co>
Co-authored-by: Tim Brooks <tim@uncontended.net>
Co-authored-by: Christoph Büscher <cbuescher@posteo.de>
Co-authored-by: Luca Cavanna <javanna@users.noreply.github.com>
Co-authored-by: markharwood <markharwood@gmail.com>
Co-authored-by: Ioannis Kakavas <ioannis@elastic.co>
Co-authored-by: Nhat Nguyen <nhat.nguyen@elastic.co>
Co-authored-by: David Roberts <dave.roberts@elastic.co>
Co-authored-by: Jason Tedor <jason@tedor.me>
Co-authored-by: Alpar Torok <torokalpar@gmail.com>
Co-authored-by: David Turner <david.turner@elastic.co>
Co-authored-by: Martijn van Groningen <martijn.v.groningen@gmail.com>
Co-authored-by: Tim Vernum <tim@adjective.org>
Co-authored-by: Albert Zaharovits <albert.zaharovits@gmail.com>
In #38333 and #38350 we moved away from the `discovery.zen` settings namespace
since these settings have an effect even though Zen Discovery itself is being
phased out. This change aligns the documentation and the names of related
classes and methods with the newly-introduced naming conventions.
We have had various reports of problems caused by the maxRetryTimeout
setting in the low-level REST client. Such setting was initially added
in the attempts to not have requests go through retries if the request
already took longer than the provided timeout.
The implementation was problematic though as such timeout would also
expire in the first request attempt (see #31834), would leave the
request executing after expiration causing memory leaks (see #33342),
and would not take into account the http client internal queuing (see #25951).
Given all these issues, it seems that this custom timeout mechanism
gives little benefits while causing a lot of harm. We should rather rely
on connect and socket timeout exposed by the underlying http client
and accept that a request can overall take longer than the configured
timeout, which is the case even with a single retry anyways.
This commit removes the `maxRetryTimeout` setting and all of its usages.
Currently the snapshot/restore process manually sets the global
checkpoint to the max sequence number from the restored segements. This
does not work for Ccr as this will lead to documents that would be
recovered in the normal followering operation from being recovered.
This commit fixes this issue by setting the initial global checkpoint to
the existing local checkpoint.
With this change we no longer support pluggable discovery implementations. No
known implementations of `DiscoveryPlugin` actually override this method, so in
practice this should have no effect on the wider world. However, we were using
this rather extensively in tests to provide the `test-zen` discovery type. We
no longer need a separate discovery type for tests as we no longer need to
customise its behaviour.
Relates #38410
Today we throw a fatal `RuntimeException` if an exception occurs in
`getMasterName()`, and this includes the case where there is currently no
master. However, sometimes we call this method inside an `assertBusy()` in
order to allow for a cluster that is in the process of stabilising and electing
a master. The trouble is that `assertBusy()` only retries on an
`AssertionError` and not on a general `RuntimeException`, so the lack of a
master is immediately fatal.
This commit fixes the issue by asserting there is a master, triggering a retry
if there is not.
Fixes#38331
Renames the following settings to remove the mention of `zen` in their names:
- `discovery.zen.hosts_provider` -> `discovery.seed_providers`
- `discovery.zen.ping.unicast.concurrent_connects` -> `discovery.seed_resolver.max_concurrent_resolvers`
- `discovery.zen.ping.unicast.hosts.resolve_timeout` -> `discovery.seed_resolver.timeout`
- `discovery.zen.ping.unicast.hosts` -> `discovery.seed_addresses`
X-Pack security supports built-in authentication service
`token-service` that allows access tokens to be used to
access Elasticsearch without using Basic authentication.
The tokens are generated by `token-service` based on
OAuth2 spec. The access token is a short-lived token
(defaults to 20m) and refresh token with a lifetime of 24 hours,
making them unsuitable for long-lived or recurring tasks where
the system might go offline thereby failing refresh of tokens.
This commit introduces a built-in authentication service
`api-key-service` that adds support for long-lived tokens aka API
keys to access Elasticsearch. The `api-key-service` is consulted
after `token-service` in the authentication chain. By default,
if TLS is enabled then `api-key-service` is also enabled.
The service can be disabled using the configuration setting.
The API keys:-
- by default do not have an expiration but expiration can be
configured where the API keys need to be expired after a
certain amount of time.
- when generated will keep authentication information of the user that
generated them.
- can be defined with a role describing the privileges for accessing
Elasticsearch and will be limited by the role of the user that
generated them
- can be invalidated via invalidation API
- information can be retrieved via a get API
- that have been expired or invalidated will be retained for 1 week
before being deleted. The expired API keys remover task handles this.
Following are the API key management APIs:-
1. Create API Key - `PUT/POST /_security/api_key`
2. Get API key(s) - `GET /_security/api_key`
3. Invalidate API Key(s) `DELETE /_security/api_key`
The API keys can be used to access Elasticsearch using `Authorization`
header, where the auth scheme is `ApiKey` and the credentials, is the
base64 encoding of API key Id and API key separated by a colon.
Example:-
```
curl -H "Authorization: ApiKey YXBpLWtleS1pZDphcGkta2V5" http://localhost:9200/_cluster/health
```
Closes#34383
Relax test warning message checking to pre-empt PR 38022 landing in 6.7 with new warning messages.
The relaxed test now just assumes any warning message starting with “[types removal]” is tolerated rather than the precise phrasing used in the 6.7 branch.
This commit introduces a background sync for retention leases. The idea
here is that we do a heavyweight sync when adding a new retention lease,
and then periodically we want to background sync any retention lease
renewals to the replicas. As long as the background sync interval is
significantly lower than the extended lifetime of a retention lease, it
is okay if from time to time a replica misses a sync (it will still have
an older version of the lease that is retaining more data as we assume
that renewals do not decrease the retaining sequence number). There are
two follow-ups that will come after this commit. The first is to address
the fact that we have not adapted the should periodically flush logic to
possibly flush the retention leases. We want to do something like flush
if we have not flushed in the last five minutes and there are renewed
retention leases since the last time that we flushed. An additional
follow-up will remove the syncing of retention leases when a retention
lease expires. Today this sync could be invoked in the background by a
merge operation. Rather, we will move the syncing of retention lease
expiration to be done under the background sync. The background sync
will use the heavyweight sync (write action) if a lease has expired, and
will use the lightweight background sync (replication action) otherwise.
Today the following settings in the `discovery.zen` namespace are still used:
- `discovery.zen.no_master_block`
- `discovery.zen.hosts_provider`
- `discovery.zen.ping.unicast.concurrent_connects`
- `discovery.zen.ping.unicast.hosts.resolve_timeout`
- `discovery.zen.ping.unicast.hosts`
This commit deprecates all other settings in this namespace so that they can be
removed in the next major version.
Today we have DiscoveryDisruptionIT tests for checking that discovery can still
work once the cluster has formed, even if the cluster is misconfigured and only
has a single master-eligible node in its unicast hosts list. In fact with Zen2
we can go one better: we do not need any nodes in the unicast hosts list,
because nodes also use the contents of the last-committed cluster state for
discovery. Additionally, the DiscoveryDisruptionIT tests were failing due to
the overenthusiastic fault-detection timeouts.
This commit replaces these tests with deterministic `CoordinatorTests` that
verify the same behaviour. It also removes some duplication by extracting a
test method called `testFollowerCheckerAfterMasterReelection()`
Closes#37687
Because concurrent sync requests from a primary to its replicas could be
in flight, it can be the case that an older retention leases collection
arrives and is processed on the replica after a newer retention leases
collection has arrived and been processed. Without a defense, in this
case the replica would overwrite the newer retention leases with the
older retention leases. This commit addresses this issue by introducing
a versioning scheme to retention leases. This versioning scheme is used
to resolve out-of-order processing on the replica. We persist this
version into Lucene and restore it on recovery. The encoding of
retention leases is starting to get a little ugly. We can consider
addressing this in a follow-up.
This PR removes the temporary change we made to the yml test harness in #37285
to automatically set `include_type_name` to `true` in index creation requests
if it's not already specified. This is possible now that the vast majority of
index creation requests were updated to be typeless in #37611. A few additional
tests also needed updating here.
Additionally, this PR updates the test harness to set `include_type_name` to
`false` in index creation requests when communicating with 6.x nodes. This
mirrors the logic added in #37611 to allow for typeless document write requests
in test set-up code. With this update in place, we can remove many references
to `include_type_name: false` from the yml tests.
Currently, there are a few tests that use autoMinMasterNodes=false and
hence override addExtraClusterBootstrapSettings, mostly this is 10-30
lines of codes that are copy-pasted from class to class.
This PR introduces `InternalTestCluster.setBootstrapMasterNodeIndex`
which is suitable for all classes and copy-paste could be removed.
Removing code is always a good thing!
* Fixes two broken spots:
1. Master failover while deleting a snapshot that has no shards will get stuck if the new master finds the 0-shard snapshot in `INIT` when deleting
2. Aborted shards that were never seen in `INIT` state by the `SnapshotsShardService` will not be notified as failed, leading to the snapshot staying in `ABORTED` state and never getting deleted with one or more shards stuck in `ABORTED` state
* Tried to make fixes as short as possible so we can backport to `6.x` with the least amount of risk
* Significantly extended test infrastructure to reproduce the above two issues
* Two new test runs:
1. Reproducing the effects of node disconnects/restarts in isolation
2. Reproducing the effects of disconnects/restarts in parallel with shard relocations and deletes
* Relates #32265
* Closes#32348
Implements `geotile_grid` aggregation
This patch refactors previous implementation https://github.com/elastic/elasticsearch/pull/30240
This code uses the same base classes as `geohash_grid` agg, but uses a different hashing
algorithm to allow zoom consistency. Each grid bucket is aligned to Web Mercator tiles.
When extending ESIntegTestCase are run on the same jvm, the static field in
NodeAndClusterIdConverter will throw an AlreadySet exceptions.
overriding the configuration method from Node.configureNodeAndClusterIdStateListener in the MockNode will prevent the listener registration from happening
relates #32850
Scheduler.schedule(...) would previously assume that caller handles
exception by calling get() on the returned ScheduledFuture.
schedule() now returns a ScheduledCancellable that no longer gives
access to the exception. Instead, any exception thrown out of a
scheduled Runnable is logged as a warning.
This is a continuation of #28667, #36137 and also fixes#37708.
This commit pushes the primary term into the replication tracker. This
is a precursor to using the primary term to resolving ordering problems
for retention leases. Namely, it can be that out-of-order retention
lease sync requests arrive on a replica. To resolve this, we need a
tuple of (primary term, version). For this to be, the primary term needs
to be accessible in the replication tracker. As the primary term is part
of the replication group anyway, this change conceptually makes sense.
With #37566 we have introduced the ability to merge multiple search responses into one. That makes it possible to expose a new way of executing cross-cluster search requests, that makes CCS much faster whenever there is network latency between the CCS coordinating node and the remote clusters. The coordinating node can now send a single search request to each remote cluster, which gets reduced by each one of them. from + size results are requested to each cluster, and the reduce phase in each cluster is non final (meaning that buckets are not pruned and pipeline aggs are not executed). The CCS coordinating node performs an additional, final reduction, which produces one search response out of the multiple responses received from the different clusters.
This new execution path will be activated by default for any CCS request unless a scroll is provided or inner hits are requested as part of field collapsing. The search API accepts now a new parameter called ccs_minimize_roundtrips that allows to opt-out of the default behaviour.
Relates to #32125
Today we pass `discovery.zen.minimum_master_nodes` to nodes started up in
tests, but for 7.x nodes this setting is not required as it has no effect.
This commit removes this setting so that nodes are started with more realistic
configurations, and deprecates it.
This drops the option for tests to disable strict deprecation mode in
the low level rest client in favor of configuring expected warnings on
any calls that should expect warnings. This behavior is
paranoid-by-default which is generally the right way to handle
deprecations and tests in general.
This PR attempts to remove all typed calls from our YAML REST tests. The PR adds include_type_name: false to create index requests that use a mapping and also to put mapping requests. It also removes _type from index requests where they haven't already been removed. The PR ignores tests named *_with_types.yml since this are specifically testing typed API behaviour.
The change also includes changing the test harness to add the type _doc to index, update, get and bulk requests that do not specify the document type when the test is running against a mixed 7.x/6.x cluster.
This is related to #35975. It adds a action timeout setting that allows
timeouts to be applied to the individual transport actions that are
used during a ccr recovery.
In order to support JSON log format, a custom pattern layout was used and its configuration is enclosed in ESJsonLayout. Users are free to use their own patterns, but if smooth Beats integration is needed, they should use ESJsonLayout. EvilLoggerTests are left intact to make sure user's custom log patterns work fine.
To populate additional fields node.id and cluster.uuid which are not available at start time,
a cluster state update will have to be received and the values passed to log4j pattern converter.
A ClusterStateObserver.Listener is used to receive only one ClusteStateUpdate. Once update is received the nodeId and clusterUUid are set in a static field in a NodeAndClusterIdConverter.
Following fields are expected in JSON log lines: type, tiemstamp, level, component, cluster.name, node.name, node.id, cluster.uuid, message, stacktrace
see ESJsonLayout.java for more details and field descriptions
Docker log4j2 configuration is now almost the same as the one use for ES binary.
The only difference is that docker is using console appenders, whereas ES is using file appenders.
relates: #32850
This commit introduces retention lease syncing from the primary to its
replicas when a new retention lease is added. A follow-up commit will
add a background sync of the retention leases as well so that renewed
retention leases are synced to replicas.
* Remove empty statements
There are a couple of instances of undocumented empty statements all across the
code base. While they are mostly harmless, they make the code hard to read and
are potentially error-prone. Removing most of these instances and marking blocks
that look empty by intention as such.
* Change test, slightly more verbose but less confusing
This commit changes the default for the `track_total_hits` option of the search request
to `10,000`. This means that by default search requests will accurately track the total hit count
up to `10,000` documents, requests that match more than this value will set the `"total.relation"`
to `"gte"` (e.g. greater than or equals) and the `"total.value"` to `10,000` in the search response.
Scroll queries are not impacted, they will continue to count the total hits accurately.
The default is set back to `true` (accurate hit count) if `rest_total_hits_as_int` is set in the search request.
I choose `10,000` as the default because that's also the number we use to limit pagination. This means that users will be able to know how far they can jump (up to 10,000) even if the total number of hits is not accurate.
Closes#33028
From #29453 and #37285, the include_type_name parameter was already present and defaulted to false. This PR makes the following updates:
* Add deprecation warnings to RestCreateIndexAction, plus tests in RestCreateIndexActionTests.
* Add a typeless 'create index' method to the Java HLRC, and deprecate the old typed version. To do this cleanly, I created new CreateIndexRequest and CreateIndexResponse objects that differ from the existing server ones.
elasticsearch-node tool helps to restore cluster if half or more of
master eligible nodes are lost. Of course, all bets are off, regarding
data consistency.
There are two parts of the tool: unsafe-bootstrap to be used when there
is still at least one master-eligible node alive and detach-cluster,
when there are no master-eligible nodes left.
This commit implements the first part.
Docs for the tool will be added separately as a part of #37812.
This change split out all the specific GeoHash
classes for the geohash_grid aggregation into
abstract GeoGrid classes that can be re-used for
specific hashing types, like `geohash`
* Testing conventions now checks for tests in main
This is the last outstanding feature of the old NamingConventionsTask,
so time to remove it.
* PR review
The assertion `assertOpsOnPrimary` does not store seq_no and primary
term of successful deletes to the `lastOpSeqNo` and `lastOpTerm`. This
leads to failures of the subsequence CAS deletes or indexes with seq_no
and term. Moreover, this assertion trips a translog assertion because it
bumps the primary term of some operations but not the primary term of
the engine.
Relates #36467Closes#37684
Exceptions thrown by the cluster applier service's settings and cluster appliers are bubbled up, and
block the state from being applied instead of silently being ignored. In combination with the cluster
state publishing lag detector, this will throw a node out of the cluster that can't properly apply
cluster state updates.
This commit moves the aggregation and mapping code from joda time to
java time. This includes field mappers, root object mappers, aggregations with date
histograms, query builders and a lot of changes within tests.
The cut-over to java time is a requirement so that we can support nanoseconds
properly in a future field mapper.
Relates #27330
Users may require the sequence number and primary terms to perform optimistic concurrency control operations. Currently, you can get the sequence number via the `docvalues_fields` API but the primary term is not accessible because it is maintained by the `SeqNoFieldMapper` and the infrastructure can't find it.
This commit adds a dedicated sub fetch phase to return both numbers that is connected to a new `seq_no_primary_term` parameter.
* Fail start of non-data node if node has data
Check that nodes started with node.data=false cannot start if they have
shard data to avoid (old) indexes being resurrected into the cluster in red status.
Issue #27073
This commit introduces a NetworkMessage class. This class has two
subclasses - InboundMessage and OutboundMessage. These messages can
be serialized and deserialized independent of the transport. This allows
more granular testing. Additionally, the serialization mechanism is now
a simple Supplier. This builds the framework to eventually move the
serialization of transport messages to the network thread. This is the
one serialization component that is not currently performed on the
network thread (transport deserialization and http serialization and
deserialization are all on the network thread).
Currently we create dedicated network threads for both the http and
transport implementations. Since these these threads should never
perform blocking operations, these threads could be shared. This commit
modifies the nio-transport to have 0 http workers be default. If the
default configs are used, this will cause the http transport to be run
on the transport worker threads. The http worker setting will still exist
in case the user would like to configure dedicated workers. Additionally,
this commmit deletes dedicated acceptor threads. We have never had these
for the netty transport and they can be added back if a need is
determined in the future.
From #29453 and #37285, the `include_type_name` parameter was already present and defaulted to false. This PR makes the following updates:
- Add deprecation warnings to `RestPutMappingAction`, plus tests in `RestPutMappingActionTests`.
- Add a typeless 'put mappings' method to the Java HLRC, and deprecate the old typed version. To do this cleanly, I opted to create a new `PutMappingRequest` object that differs from the existing server one.
Some tests (e.g. testRestoreIndexWithShardsMissingInLocalGateway) were split-braining since
being switched to Zen2 because the bootstrap setting was left around when nodes got restarted
with data folders wiped.
The test in question here was starting one node (which autobootstrapped to that single node), then
another node. The first node was then shut down (after excluding it from the voting configuration),
its data folder wiped, and restarted. After restart, the node had an empty data folder yet
initial_master_nodes set to itself (i.e. same name). This made the node sometimes form a cluster of
its own, and not rejoin the existing cluster with the other node.
This commit removes some leniency from REST handling where we move to
reject all requests that have a body where the body is not used during
the course of handling the request. For example,
DELETE /index
{
"query" : {
"term" : {
"field" : "value"
}
}
}
is now rejected.
The AbstracLifecycleComponent used to extend AbstractComponent, so it had to pass settings to the constractor of its supper class.
It no longer extends the AbstractComponent so there is no need for this constructor
There is also no need for AbstracLifecycleComponent subclasses to have Settings in their constructors if they were only passing it over to super constructor.
This is part 1. which will be backported to 6.x with a migration guide/deprecation log.
part 2 will have this constructor removed in 7
relates #35560
relates #34488
This commit fixes the IndexShardTestCase.recoverReplica(IndexShard, IndexShard, boolean)
method where the startReplica parameter was not correctly propagated and the value
true always used instead.
This commit reformats some classes in the index universe with the
purpose of breaking some long method definitions and invocations into a
line per parameter. This has the advantage that for an upcoming change
to these definitions and invocations, the diff for that change will be a
single line per definition or invocation. That makes these sorts of
changes easier to read.
* Default include_type_name to false for get and put mappings.
* Default include_type_name to false for get field mappings.
* Add a constant for the default include_type_name value.
* Default include_type_name to false for get and put index templates.
* Default include_type_name to false for create index.
* Update create index calls in REST documentation to use include_type_name=true.
* Some minor clean-ups around the get index API.
* In REST tests, use include_type_name=true by default for index creation.
* Make sure to use 'expression == false'.
* Clarify the different IndexTemplateMetaData toXContent methods.
* Fix FullClusterRestartIT#testSnapshotRestore.
* Fix the ml_anomalies_default_mappings test.
* Fix GetFieldMappingsResponseTests and GetIndexTemplateResponseTests.
We make sure to specify include_type_name=true during xContent parsing,
so we continue to test the legacy typed responses. XContent generation
for the typeless responses is currently only covered by REST tests,
but we will be adding unit test coverage for these as we implement
each typeless API in the Java HLRC.
This commit also refactors GetMappingsResponse to follow the same appraoch
as the other mappings-related responses, where we read include_type_name
out of the xContent params, instead of creating a second toXContent method.
This gives better consistency in the response parsing code.
* Fix more REST tests.
* Improve some wording in the create index documentation.
* Add a note about types removal in the create index docs.
* Fix SmokeTestMonitoringWithSecurityIT#testHTTPExporterWithSSL.
* Make sure to mention include_type_name in the REST docs for affected APIs.
* Make sure to use 'expression == false' in FullClusterRestartIT.
* Mention include_type_name in the REST templates docs.
If the checking node no longer holds the shard copy, the assertion
assertSameDocIdsOnShards might fail. This is too harsh since the
assertion is to ensure the consistency between active copies.
Today file-chunks are sent sequentially one by one in peer-recovery. This is a
correct choice since the implementation is straightforward and recovery is
network bound in most of the time. However, if the connection is encrypted, we
might not be able to saturate the network pipe because encrypting/decrypting
are cpu bound rather than network-bound.
With this commit, a source node can send multiple (default to 2) file-chunks
without waiting for the acknowledgments from the target.
Below are the benchmark results for PMC and NYC_taxis.
- PMC (20.2 GB)
| Transport | Baseline | chunks=1 | chunks=2 | chunks=3 | chunks=4 |
| ----------| ---------| -------- | -------- | -------- | -------- |
| Plain | 184s | 137s | 106s | 105s | 106s |
| TLS | 346s | 294s | 176s | 153s | 117s |
| Compress | 1556s | 1407s | 1193s | 1183s | 1211s |
- NYC_Taxis (38.6GB)
| Transport | Baseline | chunks=1 | chunks=2 | chunks=3 | chunks=4 |
| ----------| ---------| ---------| ---------| ---------| -------- |
| Plain | 321s | 249s | 191s | * | * |
| TLS | 618s | 539s | 323s | 290s | 213s |
| Compress | 2622s | 2421s | 2018s | 2029s | n/a |
Relates #33844
This is related to #35975. It implements a file based restore in the
CcrRepository. The restore transfers files from the leader cluster
to the follower cluster. It does not implement any advanced resiliency
features at the moment. Any request failure will end the restore.
Today a peer-recovery may run into a deadlock if the value of
node_concurrent_recoveries is too high. This happens because the
peer-recovery is executed in a blocking fashion. This commit attempts
to make the recovery source partially non-blocking. I will make three
follow-ups to make it fully non-blocking: (1) send translog operations,
(2) primary relocation, (3) send commit files.
Relates #36195
* Fix PrimaryAllocationIT Race Condition
* Forcing a stale primary allocation on a green index was tripping the assertion that was removed
* Added a test that this case still errors out correctly
* Made the ability to wipe stopped datanode's data public on the internal test cluster and used it to ensure correct behaviour on the fixed test
* Previously it simply passed because the test finished before the index went green and would NPE when the index was green at the time of the shard store status request, that would then come up empty
* Closes#37345
This commit moves DisruptableMockTransport to use a more accurate representation of connection
management, which allows to use the full connection manager and does not require mocking out
any behavior. With this, we can implement restarting nodes in CoordinatorTests.
This commit makes the use of empty retention lease suppliers to always
be an empty list as opposed to in some cases an empty set. This commit
is solely for consistency reasons, there is no functional change here.
Adds join validation to Zen2, which prevents a node from joining a cluster when the node does not
have the right ES version or does not satisfy any other of the join validation constraints.
* Tests: Add ElasticsearchAssertions.awaitLatch method
Some tests are using assertTrue(latch.await(...)) in their code. This
leads to an assertion error without any error message. This adds a
method which has a nicer error message and can be used in tests.
* fix forbidden apis
* fix spaces
* TESTS: Real Coordinator in SnapshotServiceTests
* Introduce real coordinator in SnapshotServiceTests to be able to test network disruptions realistically
* Make adjustments to cluster applier service so that we can pass a mocked single threaded executor for tests
This commit implements a straightforward approach to retention lease
expiration. Namely, we inspect which leases are expired when obtaining
the current leases through the replication tracker. At that moment, we
clean the map that persists the retention leases in memory.
The `cluster.unsafe_initial_master_node_count` setting was introduced as a
temporary measure while the design of `cluster.initial_master_nodes` was being
finalised. This commit removes this temporary setting, replacing it with usages
of `cluster.initial_master_nodes` where appropriate.
This commit adds a unique id to cluster blocks, so that they can be uniquely
identified if needed. This is important for the Close Index API where multiple
concurrent closing requests can be executed at the same time. By adding a
UUID to the cluster block, we can generate unique "closing block" that can
later be verified on shards and then checked again from the cluster state
before closing the index. When the verification on shard is done, the closing
block is replaced by the regular INDEX_CLOSED_BLOCK instance.
If something goes wrong, calling the Open Index API will remove the block.
Related to #33888
This commit is the first in a series which will culminate with
fully-functional shard history retention leases.
Shard history retention leases are aimed at preventing shard history
consumers from having to fallback to expensive file copy operations if
shard history is not available from a certain point. These consumers
include following indices in cross-cluster replication, and local shard
recoveries. A future consumer will be the changes API.
Further, index lifecycle management requires coordinating with some of
these consumers otherwise it could remove the source before all
consumers have finished reading all operations. The notion of shard
history retention leases that we are introducing here will also be used
to address this problem.
Shard history retention leases are a property of the replication group
managed under the authority of the primary. A shard history retention
lease is a combination of an identifier, a retaining sequence number, a
timestamp indicating when the lease was acquired or renewed, and a
string indicating the source of the lease. Being leases they have a
limited lifespan that will expire if not renewed. The idea of these
leases is that all operations above the minimum of all retaining
sequence numbers will be retained during merges (which would otherwise
clear away operations that are soft deleted). These leases will be
periodically persisted to Lucene and restored during recovery, and
broadcast to replicas under certain circumstances.
This commit is merely putting the basics in place. This first commit
only introduces the concept and integrates their use with the soft
delete retention policy. We add some tests to demonstrate the basic
management is correct, and that the soft delete policy is correctly
influenced by the existence of any retention leases. We make no effort
in this commit to implement any of the following:
- timestamps
- expiration
- persistence to and recovery from Lucene
- handoff during primary relocation
- sharing retention leases with replicas
- exposing leases in shard-level statistics
- integration with cross-cluster replication
These will occur individually in follow-up commits.
The initialization of a suite scope cluster had some sideffects on
subsequent runs which causes issues when tests must be reproduced.
This moves the suite scope initialization to a privte random context.
Closes#36202
In Lucene 8 searches can skip non-competitive hits if the total hit count is not requested.
It is also possible to track the number of hits up to a certain threshold. This is a trade off to speed up searches while still being able to know a lower bound of the total hit count. This change adds the ability to set this threshold directly in the track_total_hits search option. A boolean value (true, false) indicates whether the total hit count should be tracked in the response. When set as an integer this option allows to compute a lower bound of the total hits while preserving the ability to skip non-competitive hits when enough matches have been collected.
Relates #33028
Now that we unwrap mappings in DocumentMapperParser#extractMappings, it is not
necessary for the mapping definition to always be nested under the type. This
leniency around the mapping format was added in 2341825358.
With the upcoming cross-cluster search alternate execution mode, the CCS
node will be able to split a CCS request into multiple search requests,
one per remote cluster involved. In order to do that, the CCS node has
to be able to signal to each remote cluster that such sub-requests are
part of a CCS request. Each cluster does not know about the other
clusters involved, and does not know either what alias it is given in
the CCS node, hence the CCS coordinating node needs to be able to provide
the alias as part of the search request so that it is used as index prefix
in the returned search hits.
The cluster alias is a notion that's already supported in the search shards
iterator and search shard target, but it is currently used in CCS as both
index prefix and connection lookup key when fanning out to all the shards.
With CCS alternate execution mode the provided cluster alias needs to be
used only as index prefix, as shards are local to each cluster hence no
cluster alias should be used for connection lookups.
The local cluster alias can be set to the SearchRequest at the transport layer
only, and its constructor/getter methods are package private.
Relates to #32125
Today InternalTestClusterTests is still using zen1.
This commit fixes it.
Two types of changes were required:
1. Explicitly pass file discovery host provider setting. It's done in
ESIntegTestCase as a part of the Zen2 feature and should be done here
as well.
2. For the test, that uses autoManageMinMasterNodes = false perform
cluster bootstrap.
Today the routing of a SourceToParse is assigned in a separate step
after the object is created. We can easily forget to set the routing.
With this commit, the routing must be provided in the constructor of
SourceToParse.
Relates #36921
This is a follow-up to some discussions around #36399. Currently we have
relatively confusing compression behavior where compression can be
configured for requests based on transport.compress or a specific
setting for a remote cluster. However, we can only compress responses
based on transport.compress as we do not know where a request is
coming from (currently).
This commit modifies the behavior to NEVER compress responses based on
settings. Instead, a response will only be compressed if the request was
compressed. This commit also updates the documentation to more clearly
described transport level compression.
This commit modifies ESSingleNodeTestCase and ESIntegTestCase and
several concrete test classes to use node names when bootstrapping the
cluster.
Today ClusterBootstrapService.INITIAL_MASTER_NODE_COUNT_SETTING
setting is used to bootstrap clusters in tests. Instead, we want to use
ClusterBootrstapService.INITIAL_MASTER_NODES_SETTING and get rid of
the former setting eventually.
There were two main problems when refactoring InternalTestCluster:
1. Nodes are created one-by-one in buildNode method. And node.name
is created in this method as well. It's not suitable for bootstrapping,
because we need to have the names of all master eligible nodes in
advance, before creating the node with bootstrapping configuration set.
We address this issue by separating buildNode into two methods:
getNodeSettings and buildNode. We first iterate over all nodes to
get nodes settings, then change the setting for the bootstrapping node
and then proceed with building the node.
2. If autoManageMinMasterNodes = false, there is no way for the test to
set the list of bootstrapping nodes because node names are not known in
advance. This problem is solved by adding updateNodesSettings method
to NodeConfigurationSource and ESIntegTestCase (which could be
overridden by concrete integration test class). Once we have the list
of settings for all nodes, the integration test class is allowed to
update it. In our case, we update the
ClusterBootrstapService.INITIAL_MASTER_NODES_SETTING setting.
Single-node discovery is not persisting cluster states, which was caused by a recent 7.0-only
refactoring. This commit ensures that the cluster state is properly persisted when using single-node
discovery and adds a corresponding test.
This is related to #36652. In 7.0 we plan to deprecate a number of
settings that make reference to the concept of a tcp transport. We
mostly just have a single transport type now (based on tcp). Settings
should only reference tcp if they are referring to socket options. This
commit updates the settings in the docs. And removes string usages of
the old settings. Additionally it adds a missing remote compress setting
to the docs.
This commit removes the originalSettings member from Node. It was only
needed to allows test clusters to recreate the node in certain
situations. Instead, the test cluster now keeps track of these settings.
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 each `SearchHit`. Sort values are already present but they are formatted according to the provided `DocValueFormat` provided. The CCS node needs to be able to reconstruct the lucene `FieldDoc` to include in the `TopFieldDocs` and `CollapseTopFieldDocs` which will feed the `mergeTopDocs` method used to reduce multiple search responses (one per cluster) into one.
This commit adds such information to the `SearchSortValues` and exposes it through a new getter method added to `SearchHit` for retrieval. This info is only serialized at transport and never printed out at REST.
This commit exposes lucene's LatLonShape field as the
default type in GeoShapeFieldMapper. To use the new
indexing approach, simply set "type" : "geo_shape" in
the mappings without setting any of the strategy, precision,
tree_levels, or distance_error_pct parameters. Note the
following when using the new indexing approach:
* geo_shape query does not support querying by
MULTIPOINT.
* LINESTRING and MULTILINESTRING queries do not
yet support WITHIN relation.
* CONTAINS relation is not yet supported.
The tree, precision, tree_levels, distance_error_pct,
and points_only parameters are deprecated.
This commit fixes a test bug introduced with #36597. This caused some
test failure as stored field values comparisons would not work when CBOR
xcontent type was used.
Closes#29080
This commit add support for using sequence numbers to power [optimistic concurrency control](http://en.wikipedia.org/wiki/Optimistic_concurrency_control)
in the delete and index transport actions and requests. A follow up will come with adding sequence
numbers to the update and get results.
Relates #36148
Relates #10708
This commit updates our transport settings for 7.0. It generally takes a
few approaches. First, for normal transport settings, it usestransport.
instead of transport.tcp. Second, it uses transport.tcp, http.tcp,
or network.tcp for all settings that are proxies for OS level socket
settings. Third, it marks the network.tcp.connect_timeout setting for
removal. Network service level settings are only settings that apply to
both the http and transport modules. There is no connect timeout in
http. Fourth, it moves all the transport settings to a single class
TransportSettings similar to the HttpTransportSettings class.
This commit does not actually remove any settings. It just adds the new
renamed settings and adds todos for settings that will be deprecated.
SearchSortValuesTests extends now `AbstractSerializingTestCase` which removes some code duplication and standardizes the way we test `fromXContent`, serialization and equals/hashcode.
Also, we were never creating `SearchSortValues` through their public constructor that accept an array of `DocValueFormat` together with the array of raw sort values. That is covered now, which involved some conversion from `BytesRef` to String in the test.
Also, the previous test was not using doing any equality check against the original and parsed versions in `testFromXContent` due to values being parsed with different types in some cases, which is now covered by converting those values using a new method added to `RandomObjects`. The code was already there as part of `randomStoredFieldValues`, but it is now exposed to be used in other scenarios.
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
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 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.
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
`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.
Redeprecates the `/_xpack/rollup` endpoints in favor of `/_rollup`.
When we cleanup the rollup in a cluster containing 6.x nodes we need to
use `/_xpack/rollup` instead of `/_rollup` because the 6.x nodes don't
know about `/_rollup`. In those cases we must ignore the deprecation
warnings that the 7.0 node will return for the end point.
Closes#36044
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 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.
Added helper methods to ESRestTestCase for checking warnings in mixed and current-version-only clusters.
This is supported by a new VersionSpecificWarningsHandler class with associated unit test.
Closes#36251
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.
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).
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.
This allows you to plug the behavior that the LLRC uses to handle
warnings on a per request basis.
We entertained the idea of allowing you to set the warnings behavior to
strict mode on a per request basis but that wouldn't allow the high
level rest client to fail when it sees an unexpected warning.
We also entertained the idea of adding a list of "required warnings" to
the `RequestOptions` but that won't work well with failures that occur
*sometimes* like those we see in mixed clusters.
Adding a list of "allowed warnings" to the `RequestOptions` would work
for mixed clusters but it'd leave many of the assertions in our tests
weaker than we'd like.
This behavior plugging implementation allows us to make a "required
warnings" option when we need it and an "allowed warnings" behavior when
we need it.
I don't think this behavior is going to be commonly used by used outside
of the Elasticsearch build, but I expect they'll be a few commendably
paranoid folks who could use this behavior.
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 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.
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
Today the InternalTestClusterTests sometimes set up a cluster with a single
master, start some other ndoes, shut the original master down, and then reset
the cluster. This doesn't really work, because the original master may be
stale. This change avoids shutting down the only master in this situation.
This commit changes the format of the `hits.total` in the search response to be an object with
a `value` and a `relation`. The `value` indicates the number of hits that match the query and the
`relation` indicates whether the number is accurate (in which case the relation is equals to `eq`)
or a lower bound of the total (in which case it is equals to `gte`).
This change also adds a parameter called `rest_total_hits_as_int` that can be used in the
search APIs to opt out from this change (retrieve the total hits as a number in the rest response).
Note that currently all search responses are accurate (`track_total_hits: true`) or they don't contain
`hits.total` (`track_total_hits: true`). We'll add a way to get a lower bound of the total hits in a
follow up (to allow numbers to be passed to `track_total_hits`).
Relates #33028
The shard deletion logic (triggered by IndicesStore), which also leads to index metadata deletion on
non-master-eligible data nodes, currently races against the new cluster state persistence logic
triggered by accepting cluster states. One thread is writing the index metadata while another one is
deleting the index metadata, leading to exceptions and assertions tripping (see below). The solution
proposed by this PR is to move the cluster state persistence of non-master-eligible nodes back to
the cluster applier service, just as it used to be for Zen1. This ensures that the index metadata
deletion logic, which is triggered by the shard deletion logic, runs on the same thread on which we
persist the cluster state.
Closes#35435
- make it easier to add additional testing tasks with the proper configuration and add some where they were missing.
- mute or fix failing tests
- add a check as part of testing conventions to find classes not included in any testing task.
It is important that all shards of a given index have the same
`indexCreatedVersionMajor` to Lucene, or eg. merging those shards is going to
be considered illegal. At the moment, we use the latest Lucene version when
creating a shard, which could cause shards to have different created versions
eg. in case of forced allocation. This commit makes sure to reuse the
appropriate Lucene version in order to avoid such issues.
Closes#33826
Today we configure the soft-deletes field iff soft-deletes enabled.
Although this choice was correct, it prevents an engine with
soft-deletes disabled from opening a Lucene index with soft-deletes.
Moreover, this change should not have any side-effect if a Lucene index
does not have any soft-deletes.
Relates #36141
This commit implements proper metadata recovery for Zen2.
GatewayService is responsible for the recovery. In Zen1 GatewayService
creates an instance of Gateway, that is used to reach out to other cluster
nodes, get their state and calculate the most up-to-date state based on
versions. After that Gateway performs upgrade and archival of
ClusterSettings and closes bad indices. Then recovered state is passed to GatewayService.GatewayRecoveryListener that mixes up current state
and restored state, removes state not recovered block, creates the
routing table and performs re-routing.
In Zen2 we should perform this kind of logic on cluster startup, except
mixing state (because there is nothing to mix) and opening routing table.
This commit refactors out all `ClusterUpdate` functions in a separate class
`ClusterStateUpdaters`, which is used by `Gateway` and `GatewayService`
in case of Zen1, and by `GatewayMetaState` and `GatewayService` in case of
Zen2.
This commit also switches all integration tests that are already using Zen2 from
InMemoryPersistedState to GatewayMetaState.
This test suite can stop all the shared master-eligible nodes, which breaks the
cluster since any non-shared master-eligible nodes are stopped first in the
reset process between tests.
Since this test suite can leave the cluster in this somewhat broken state, it
seems best that it uses a new cluster for each test.
When building a query Lucene distinguishes two cases, queries that require to produce a score and queries that only need to match. We cloned this mechanism in the QueryBuilders in order to be able to produce different queries based on whether they need to produce a score or not. However the only case in es that require this distinction is the BoolQueryBuilder that sets a different minimum_should_match when a `bool` query is built in a filter context..
This behavior doesn't seem right because it makes the matching of `should` clauses different when the score is not required.
Closes#35293
This fixes a failure of InternalTestClusterTests#testBeforeTest which checks
that the cluster is set up the same when starting from the same seed. Trappily,
using ESTestCase#randomIntBetween() is no good, we have to use
InternalTestCluster#random via RandomNumbers#randomIntBetween() instead.
Today, we allow all nodes in an integration test to bootstrap. However this
seems to lead to test failures due to post-election instability. The change
avoids this instability by only bootstrapping a single node in the cluster.
Empty buckets don't need to be added when performing an incremental reduction step, they can be added later in the final reduction step. This will allow us to later remove the max buckets limit when performing non final reduction.
This is a follow-up to #35144. That commit made the underlying
connection opening process in TcpTransport asynchronous. However the
method still blocked on the process being complete before returning.
This commit moves the blocking to the ConnectionManager level. This is
another step towards the top-level TransportService api being async.
This commit removes the `MockTcpTransport` as a transport option for
`ESIntegTestCase`. It is the first step in replacing the usages of
`MockTcpTransport` with `MockNioTransport`.
CompositeBytesReference#slice has two bugs:
- One that makes it fail if the reference is empty and an empty slice is
created, this is #35950 and is fixed by special-casing empty-slices.
- One performance bug that makes it always create a composite slice when
creating a slice that ends on a boundary, this is fixed by computing `limit`
as the index of the sub reference that holds the last element rather than
the next element after the slice.
Closes#35950
This is related to #34405 and a follow-up to #34753. It makes a number
of changes to our current keepalive pings.
The ping interval configuration is moved to the ConnectionProfile.
The server channel now responds to pings. This makes the keepalive
pings bidirectional.
On the client-side, the pings can now be optimized away. What this
means is that if the channel has received a message or sent a message
since the last pinging round, the ping is not sent for this round.
When wiping rollup jobs, if we are in a mixed cluster with < v7.0 nodes
we need to fall back to the deprecated endpoint because we may talk
to a 6.x node.
Today the default for USE_ZEN2 is false and it is overridden in many places. By
defaulting it to true we can be sure that the only places in which Zen2 does
not work are those in which it is explicitly set to false.
This commit removes the dedicated `setSoLinger` method. This simplifies
the `TcpChannel` interface. This method has very little effect as the
SO_LINGER is not set prior to the channels being closed in the abstract
transport test case. We still will set SO_LINGER on the
`MockNioTransport`. However we can do this manually.
Today GatewayMetaState is capable of atomically storing MetaData to
disk. We've also moved fields that are needed to be persisted in Zen2
from ClusterState to ClusterState.MetaData.CoordinationMetaData.
This commit implements PersistedState interface.
version and currentTerm are persisted as a part of Manifest.
GatewayMetaState now implements both ClusterStateApplier and
PersistedState interfaces. We started with two descendants
Zen1GatewayMetaState and Zen2GatewayMetaState, but it turned
out to be not easy to glue it.
GatewayMetaState now constructs previousClusterState (including
MetaData) and previousManifest inside the constructor so that all
PersistedState methods are usable as soon as GatewayMetaState
instance is constructed. Also, loadMetaData is renamed to
getMetaData, because it just returns
previousClusterState.metaData().
Sadly, we don't have access to localNode (obtained from
TransportService in the constructor, so getLastAcceptedState
should be called, after setLocalNode method is invoked.
Currently, when deciding whether to write IndexMetaData to disk,
we're comparing current IndexMetaData version and received
IndexMetaData version. This is not safe in Zen2 if the term has changed.
So updateClusterState now accepts incremental write
method parameter. When it's set to false, we always write
IndexMetaData to disk.
Things that are not covered by GatewayMetaStateTests are covered
by GatewayMetaStatePersistedStateTests.
This commit also adds an option to use GatewayMetaState instead of
InMemoryPersistedState in TestZenDiscovery. However, by default
InMemoryPersistedState is used and only one test in PersistedStateIT
used GatewayMetaState. In order to use it for other tests, proper
state recovery should be implemented.
Today we have a way to atomically persist global MetaData and
IndexMetaData to disk when new ClusterState is received. All other
ClusterState fields are not persisted.
However, there are other parts of ClusterState that should be
persisted, namely:
version
term
lastCommittedConfiguration
lastAcceptedConfiguration
votingTombstones
version is changed frequently, other fields are not. We decided
to group term, lastCommittedConfiguration,
lastAcceptedConfiguration and votingTombstones into
CoordinationMetaData class and make CoordinationMetaData a field
inside MetaData.
MetaData.toXContent and MetaData.fromXContent should take care of
CoordinationMetaData.
version stays as a top level field in ClusterState and will be
persisted as part of Manifest in a follow-up commit.
Also MetaData.isGlobalStateEquals should be extended to include
coordinationMetaData in comparison.
This commit favors exposing getters, such as getTerm directly in
ClusterState to avoid massive code changes.
An example of CoordinationMetaState.toXContent:
{
"term": 1,
"last_committed_config": [
"TiIuBcbBtpuXyDDVHXeD",
"ZIAoVbkjjLPLUuYLaTkw"
],
"last_accepted_config": [
"OwkXbXZNOZPJqccdFHdz",
"LouzsGYwmQzpeQMrboZe",
"fCKGRZdjLTqzXAqPUtGL",
"pLoxshjpJXwDhbgjfYJy",
"SjINLwFIlIEFZCbjrSFo",
"MDkVncJEVyZLJktopWje"
]
}
- Moves disruption tests to Zen2
- Registers a few missing settings
- Removes .put(TestZenDiscovery.USE_ZEN2.getKey(), true) from tests where Zen2 is now enabled
by default through the parent test class
- Moves QuorumGatewayIT back to Zen1, as it is not stable with Zen2 as it currently relies on
dangling indices due to the lack of proper CS persistence, which triggers secondary failures
This commit adds a rest endpoint for freezing and unfreezing an index.
Among other cleanups mainly fixing an issue accessing package private APIs
from a plugin that got caught by integration tests this change also adds
documentation for frozen indices.
Note: frozen indices are marked as `beta` and available as a basic feature.
Relates to #34352
Zen2 is now feature-complete enough to run most ESIntegTestCase tests. The changes in this PR
are as follows:
- ClusterSettingsIT is adapted to not be Zen1 specific anymore (it was using Zen1 settings).
- Some of the integration tests require persistent storage of the cluster state, which is not fully
implemented yet (see #33958). These tests keep running with Zen1 for now but will be switched
over as soon as that is fully implemented.
- Some very few integration tests are not running yet with Zen2 for other reasons, depending on
some of the other open points in #32006.
Removed extending of AbstractComponent and changed logger usage to
explicit declaration. Abstract classes still have logger
declaration using this.getClass() in order to show implementation class
name in its logs.
See #34488
This changes the test to not use a `CountDownlatch`, instead adding an assertion
for the final logging message and waiting until the `MockAppender` has seen it
before proceeding.
Resolves#23739
Today, the bootstrapping of a Zen2 cluster is driven externally, requiring
something else to wait for discovery to converge and then to inject the initial
configuration. This is hard to use in some situations, such as REST tests.
This change introduces the `ClusterBootstrapService` which brings the bootstrap
retry logic within each node and allows it to be controlled via an (unsafe)
node setting.
This pull request replaces some blocks of code that must be run once
and that are currently based on AtomicBoolean by the convient RunOnce
class added in #35489.
Refactors and simplifies the logic around stopping nodes, making sure that for a full cluster restart
onNodeStopped is only called after the nodes are actually all stopped (and in particular not while
starting up some nodes again). This change also ensures that a closed node client is not being used
anymore (which required a small change to a test).
Relates to #35049
This adds a `wait_for_completion` flag which allows the user to block
the Stop API until the task has actually moved to a stopped state,
instead of returning immediately. If the flag is set, a `timeout` parameter
can be specified to determine how long (at max) to block the API
call. If unspecified, the timeout is 30s.
If the timeout is exceeded before the job moves to STOPPED, a
timeout exception is thrown. Note: this is just signifying that the API
call itself timed out. The job will remain in STOPPING and evenutally
flip over to STOPPED in the background.
If the user asks the API to block, we move over the the generic
threadpool so that we don't hold up a networking thread.
If shutting down half or more of the master-eligible nodes, their votes must
first be explicitly withdrawn to ensure that the cluster doesn't lose its
quorum. This works via _voting tombstones_, stored in the cluster state, which
tell the reconfigurator to remove nodes from the voting configuration.
This change introduces voting tombstones to the cluster state, together with
transport APIs for adding and removing them, and makes use of these APIs in
`InternalTestCluster` to support tests which remove at least half of the
master-eligible nodes at once (e.g. shrinking from two master-eligible nodes to
one).
AbstractComponent was deprecated in #35140 and is looking like it will be
removed at some point by #34888. Today all it does is provide a logger. This
change removes the usages of AbstractComponent that live solely in the zen2
feature branch to avoid some future merge pain, and replaces it where necessary
with some directly-created loggers.
The MockTcpTransport is not friendly in regards to memory usage. It must
allocate multiple byte arrays for every message. This improves the
memory situation by failing fast if the message is improperly formatted.
Additionally, it uses reusable big arrays for at least half of the
allocated byte arrays.
This change adds a logger for the query and fetch phases that prints all requests
before their execution at the trace level. This will help debugging cases where an issue
occurs during the execution since only completed queries are logged by the slow logs.
This is related to #34483. It introduces a namespaced setting for
compression that allows users to configure compression on a per remote
cluster basis. The transport.tcp.compress remains as a fallback
setting. If transport.tcp.compress is set to true, then all requests
and responses are compressed. If it is set to false, only requests to
clusters based on the cluster.remote.cluster_name.transport.compress
setting are compressed. However, after this change regardless of any
local settings, responses will be compressed if the request that is
received was compressed.
Enables diff-based publishing, which is an optimization where only the changing parts of the cluster
state are published to the nodes in the cluster, falling back to full cluster state publishing if the
receiver does not have the previous cluster state.
- Introduces a transport API for bootstrapping a Zen2 cluster
- Introduces a transport API for requesting the set of nodes that a
master-eligible node has discovered and for waiting until this comprises the
expected number of nodes.
- Alters ESIntegTestCase to use these APIs when forming a cluster, rather than
injecting the initial configuration directly.
This change adds a `frozen` engine that allows lazily open a directory reader
on a read-only shard. The engine wraps general purpose searchers in a LazyDirectoryReader
that also allows to release and reset the underlying index readers after any and before
secondary search phases.
Relates to #34352
With this change, `Version` no longer carries information about the qualifier,
we still need a way to show the "display version" that does have both
qualifier and snapshot. This is now stored by the build and red from `META-INF`.
This is related to #29023. Additionally at other points we have
discussed a preference for removing the need to unnecessarily block
threads for opening new node connections. This commit lays the groudwork
for this by opening connections asynchronously at the transport level.
We still block, however, this work will make it possible to eventually
remove all blocking on new connections out of the TransportService
and Transport.
Today we allow the user to set the minimum size of a voting configuration. On
reflection we would rather this was simply '3' where possible, and we can use
the retirement API to control the removal of nodes more explicitly.
This change replaces the old reconfigurator setting with a new one,
`cluster.auto_shrink_voting_configuration`, which determines whether
Elasticsearch should automatically remove nodes from the voting configuration
or not.
When the engine is asked for historical operations, we check if some of the requested operations
are not yet refreshed and if so we refresh before returning the operations. The refresh check is
based on capturing the local checkpoint before each refresh and comparing that value to the one
requested when `newChangesSnapshot` was called. If the requested range is above the captured
local checkpoint we issue a refresh.
This can currently cause unneeded extra refreshes if the method is called concurrently which may cause unwanted degradation in indexing performance. This is especially relevant for CCR where we always ask for a range below the global checkpoint. That range is guaranteed to be below the local
checkpoint of the shard and one refresh is enough to serve multiple changes requests.
This commit fixes this by introducing a dedicated mutex to make sure the test for whether a refresh
is needed actually wait for concurrents for concurrent refreshes that were caused by another
change refresh.
Note that this is not a big change in semantics as refreshes are serialized by lucene anyway. I also
opted not to keep the synchronization to the changes snapshot request only even if in theory we
can apply it to all refreshes, not matter where they come from.
Currently we create a new netty event loop group for client connections
and all server profiles. Each new group creates new threads for io
processing. This means 2 * num of processors new threads for each group.
A single group should be able to handle all io processing (for the
transports). This also brings the netty module inline with what we do
for nio.
Additionally, this PR renames the worker threads to be the same for
netty and nio.
* Introduce property to set version qualifier
- VersionProperties.elasticsearch is now a string which can have qualifier
and snapshot too
- The Version class in the build no longer cares about snapshot and
qualifier.
Stop passing `Settings` to `AbstractComponent`'s ctor. This allows us to
stop passing around `Settings` in a *ton* of places. While this change
touches many files, it touches them all in fairly small, mechanical
ways, doing a few things per file:
1. Drop the `super(settings);` line on everything that extends
`AbstractComponent`.
2. Drop the `settings` argument to the ctor if it is no longer used.
3. If the file doesn't use `logger` then drop `extends
AbstractComponent` from it.
4. Clean up all compilation failure caused by the `settings` removal
and drop any now unused `settings` isntances and method arguments.
I've intentionally *not* removed the `settings` argument from a few
files:
1. TransportAction
2. AbstractLifecycleComponent
3. BaseRestHandler
These files don't *need* `settings` either, but this change is large
enough as is.
Relates to #34488
* NETWORKING: MockTransportService Wait for Close
* Make `MockTransportService` wait `30s` for close listeners to run before failing the assertion
* Closes#34990
Today when ESIntegTestCase starts some nodes it writes out the unicast hosts
files each time a node starts its transport service. This does mean that a
number of nodes can start and perform their first pinging round without any
unicast hosts which, if the timing is unlucky and a lot of nodes are all
started at the same time, can lead to a split brain as in #35052.
Prior to #33554 this was unlikely to happen since the MockUncasedHostsProvider
would always have yielded the existing hosts, so the timing would have to have
been implausibly unlucky. Since #33554, however, it's more likely because the
race occurs between the start of the first round of pinging and the writing of
the unicast hosts file. It is realistic that new nodes will be configured with
the existing nodes from startup, so this change reinstates that behaviour.
Closes#35052.
The java yaml test runner supports sending request headers, yet not all clients support headers. This commit makes sure that we enforce adding a skip section with feature "headers" whenever headers are used in a do section as part of a test. That decreases the chance for new tests to break client builds due to the missing skip section.
Closes#34650
This PR renames the CRUD APIS for ILM
GET _ilm/<policy>, _ilm -> _ilm/policy/<policy>, _ilm/policy
PUT _ilm/<policy> -> _ilm/policy/<policy>
DELETE _ilm/<policy> -> _ilm/policy/<policy>
closes#34929.
Drops the `Settings` member from `AbstractComponent`, moving it from the
base class on to the classes that use it. For the most part this is a
mechanical change that doesn't drop `Settings` accesses. The one
exception to this is naming threads where it switches from an invocation
that passes `Settings` and extracts the node name to one that explicitly
passes the node name.
This change doesn't drop the `Settings` argument from
`AbstractComponent`'s ctor because this change is big enough as is.
We'll do that in a follow up change.
This commit filters out usage of deprecated tzs by tests. These are
tested separately and should not require checking for warnings on any
test using random timezones.
closes#34188
Validation of test sections and suites consists of checking that the proper skip features sections are in place depending on the features used in tests.
The validation logic was previously only performed on do sections included in each test section, and the skip needed to be present in the same test section. What happens often though is that the skip is added to the setup section, or the teardown section.
This commit improves the validation of test suites by validating setup and teardown section first, then looking at each test section while still eventually reading the skip section from setup or teardown.
We are also making SkipSection, SetupSection, TearDownSection, ClientYamlTestSection and ClientYamlTestSuite immutable. Previously it was possible to utilize constants like SetupSection.EMPTY, which were modifiable and affect every other future users by modifiying them. This has been corrected.
Also, validation has been improved to cumulate errors so that all the errors from a suite will be listed at once.
Relates to #34735
This commit adds a new single value metric aggregation that calculates
the statistic called median absolute deviation, which is a measure of
variability that works on more types of data than standard deviation
Our calculation of MAD is approximated using t-digests. In the collect
phase, we collect each value visited into a t-digest. In the reduce
phase, we merge all value t-digests, then create a t-digest of
deviations using the first t-digest's median and centroids
Conflicts during the merge:
1. >=140 chars line length fixed for a lot of project files and warnings
for those files are no longer suppressed
2. Node name is removed from AbstractComponent, it’s no longer taken
from settings, but is explicitly passed as constructor argument and
there were quite a few new classes on zen2 branch that require this
change
3. TransportResponseHandler interface changed (new method added) and
Zen2 makes a lot of subclasses in tests
4. Deprecated way of obtaining logger was changed
Bulk Request in High level rest client should be consistent with what is
possible in Rest API, therefore should support global parameters. Global
parameters are passed in URL in Rest API.
Some parameters are mandatory - index, type - and would fail validation
if not provided before before the bulk is executed.
Optional parameters - routing, pipeline.
The usage of these should be consistent across sync/async execution,
bulk processor and BulkRequestBuilder
closes#26026
`AbstractComponent` is trouble because its name implies that
*everything* should extend from it. It *is* useful, but maybe too
broadly useful. The things it offers access too, the `Settings` instance
for the entire server and a logger are nice to have around, but not
really needed *everywhere*. The `Settings` instance especially adds a
fair bit of ceremony to testing without any value.
This removes the `nodeName` method from `AbstractComponent` so it is
more clear where we actually need the node name.
In order to remove Streamable from the codebase, Response objects need
to be read using the Writeable.Reader interface which this change
enables. This change enables the use of Writeable.Reader by adding the
`Action#getResponseReader` method. The default implementation simply
uses the existing `newResponse` method and the readFrom method. As
responses are migrated to the Writeable.Reader interface, Action
classes can be updated to throw an UnsupportedOperationException when
`newResponse` is called and override the `getResponseReader` method.
Relates #34389
This is a forward port of a change made to clean up backwards
compatibility for the rollup cleanups. It makes the version of each node
available very early on in test execution. The 6.x version of the change
used those versions to control the cleanup backwards compatibility but
that isn't needed in this branch. But having the versions around *is*
useful. So this makes them available.
Closes#34629
This is related to #30876. The AbstractSimpleTransportTestCase initiates
many tcp connections. There are normally over 1,000 connections in
TIME_WAIT at the end of the test. This is because every test opens at
least two different transports that connect to each other with 13
channel connection profiles. This commit modifies the default
connection profile used by this test to 6. One connection for each
type, except for REG which gets 2 connections.
The contains syntax was added in #30874 but the skips were not properly
put in place.
The java runner has the feature so the tests will run as part of the
build, but language clients will be able to support it at their own
pace.
We throw parsing exception when an unknown array is found, but we don't when an unknown top-level field is found. This commit makes sure that unsupported top-level fields are not ignored in a do section.
Closes#34651
#33708 introduced a strict deprecation mode that makes a REST request
fail if there is a warning header in the response returned by
Elasticsearch (usually a deprecation message signaling that a feature
or a field has been deprecated).
This change adds the strict deprecation mode into the REST integration
tests, and makes the tests fail if a deprecated feature is used. Also
any test using a deprecated feature has been modified to pass the build.
The YAML integration tests already analyzed HTTP warnings so they do
not use this mode, keeping their "expected vs actual" behavior.
In #34407, we supposed to clone the list of replicas of ReplicationGroup
when computing replication targets, but somehow we missed it. If we
don't clone the list, a WriteReplicationAction may use an old
ReplicationTargets which consists replicas which are removed from the
current list of replicas
Relates #34407Closes#33457
- Restrict visibility of Aggregators and Factories
- Move PipelineAggregatorBuilders up a level so it is consistent with
AggregatorBuilders
- Checkstyle line length fixes for a few classes
- Minor odds/ends (swapping to method references, formatting, etc)
We should delete a job by directly talking to the allocated
task and telling it to shutdown. Today we shut down a job
via the persistent task framework. This is not ideal because,
while the job has been removed from the persistent task
CS, the allocated task continues to live until it gets the
shutdown message.
This means a user can delete a job, immediately delete
the rollup index, and then see new documents appear in
the just-deleted index. This happens because the indexer
in the allocated task is still running and indexes a few
more documents before getting the shutdown command.
In this PR, the transport action is changed to a TransportTasksAction,
and we invoke onCancelled() directly on the matching job.
The race condition still exists after this PR (albeit less likely),
but this was a precursor to fixing the issue and a self-contained
chunk of code. A second PR will followup to fix the race itself.
Integrates the failure detectors with the Connection lifecycle, to fail nodes as soon as:
- a leader detects one of his followers disconnecting.
- a follower detects its leader disconnecting.
In some of our X-Pack REST tests we have to wait for pending tasks to
complete. We are now needing this functionality in ESRestTestCase for
the docs tests where we run against X-Pack features. This commit moves
the helper method that we have in X-Pack to ESRestTestCase, and removes
duplicate logic from waiting for rollup tasks to complete.
As master-eligible nodes join or leave the cluster we should give them votes or
take them away, in order to maintain the optimal level of fault-tolerance in
the system. #33924 introduced the `Reconfigurator` to calculate the optimal
configuration of the cluster, and in this change we add the plumbing needed to
actually perform the reconfigurations needed as the cluster grows or shrinks.
Since #34288, we might hit deadlock if the FollowTask has more fetchers
than writers. This can happen in the following scenario:
Suppose the leader has two operations [seq#0, seq#1]; the FollowTask has
two fetchers and one writer.
1. The FollowTask issues two concurrent fetch requests: {from_seq_no: 0,
num_ops:1} and {from_seq_no: 1, num_ops:1} to read seq#0 and seq#1
respectively.
2. The second request which fetches seq#1 completes before, and then it
triggers a write request containing only seq#1.
3. The primary of a follower fails after it has replicated seq#1 to
replicas.
4. Since the old primary did not respond, the FollowTask issues another
write request containing seq#1 (resend the previous write request).
5. The new primary has seq#1 already; thus it won't replicate seq#1 to
replicas but will wait for the global checkpoint to advance at least
seq#1.
The problem is that the FollowTask has only one writer and that writer
is waiting for seq#0 which won't be delivered until the writer completed.
This PR proposes to replicate existing operations with the old primary
term (instead of the current term) on the follower. In particular, when
the following primary detects that it has processed an process already,
it will look up the term of an existing operation with the same seq_no
in the Lucene index, then rewrite that operation with the old term
before replicating it to the following replicas. This approach is
wait-free but requires soft-deletes on the follower.
Relates #34288
With this commit we cleanup hand-coded duplicate checks in XContent
parsing. They were necessary previously but since we reconfigured the
underlying parser in #22073 and #22225, these checks are obsolete and
were also ineffective unless an undocumented system property has been
set. As we also remove this escape hatch, we can remove the additional
checks as well.
Closes#22253
Relates #34588
Today, WriteReplicationAction uses a set of replication targets directly
from the primary shard of ReplicationGroup. It should be fine except
when we add/remove or promote a shard while a write action is executing.
We have encountered these two issues:
1. Replicas are not found in the replication targets. This happens
because we remove replicas but the WriteReplicationAction still uses the
old replication targets which include the removed replicas.
2. Access ReplicationGroup from a primary shard which hasn't activated
the primary-mode yet. This is because we won't activate the primary-mode
for a promoting shard after bumping the primary term which is executed
asynchronously.
This commit captures the replication targets when the replication group
is ready and continue using those targets until we re-compute the new
targets after the group is changed.
Closes#33457
This moves the rollup cleanup code for http tests from the high level rest
client into the test framework and then entirely removes the rollup cleanup
code for http tests that lived in x-pack. This is nice because it
consolidates the cleanup into one spot, automatically invokes the cleanup
without the test having to know that it is "about rollup", and should allow
us to run the rollup docs tests.
Part of #34530
`Engine.Searcher` is non-final today which makes it error prone
in the case of wrapping the underlying reader or lucene `IndexSearcher`
like we do in `IndexSearcherWrapper`. Yet, there is no subclass of it yet
that would be dramatic to just drop on the floor. With the start of development
of frozen indices this changed since in #34357 functionality was added to
a subclass which would be dropped if a `IndexSearcherWrapper` is installed on an index.
This change locks down the `Engine.Searcher` to prevent such a functionality trap.
The `AutoFollowTests` needs to restart the clusters between each tests, because
it is using auto follow stats in assertions. Auto follow stats are only reset
by stopping the elected master node.
Extracted the `testGetOperationsBasedOnGlobalSequenceId()` test to its own test, because it just tests the shard changes api.
* Renamed AutoFollowTests to AutoFollowIT, because it is an integration test.
Renamed ShardChangesIT to IndexFollowingIT, because shard changes it the name
of an internal api and isn't a good name for an integration test.
* move creation of NodeConfigurationSource to a seperate method
* Fixes issues after merge, moved assertSeqNos() and assertSameDocIdsOnShards() methods from ESIntegTestCase to InternalTestCluster, so that ccr tests can use these methods too.
This change disallows negative query boosts. Negative scores are not allowed in Lucene 8 so
it is easier to just disallow negative boosts entirely. We should also deprecate negative boosts
in 6x in order to ensure that users are aware when they'll upgrade to ES 7.
Relates #33309
Today we rewrite the operations from the leader with the term of the
following primary because the follower should own its history. The
problem is that a newly promoted primary may re-assign its term to
operations which were replicated to replicas before by the previous
primary. If this happens, some operations with the same seq_no may be
assigned different terms. This is not good for the future optimistic
locking using a combination of seqno and term.
This change ensures that the primary of a follower only processes an
operation if that operation was not processed before. The skipped
operations are guaranteed to be delivered to replicas via either
primary-replica resync or peer-recovery. However, the primary must not
acknowledge until the global checkpoint is at least the highest seqno of
all skipped ops (i.e., they all have been processed on every replica).
Relates #31751
Relates #31113
Since all calls to `ESLoggerFactory` outside of the logging package were
deprecated, it seemed like it'd simplify things to migrate all of the
deprecated calls and declare `ESLoggerFactory` to be package private.
This does that.
Today's CoordinatorTests have a limited amount of randomisation in how things
are scheduled. However, to be fully confident in Zen2's liveness we require the
system to stabilise after any permitted sequence of events. We can achieve
this by running the system in a much more random fashion for a while, with much
larger variation in when things are scheduled (simulating GC pressure and
network disruption) and then continuing to assert that the system stabilises as
we expect. When running randomly, we do not expect to make significant progress
and merely verify that no safety property is violated.
This change introduces the runRandomly() test method which implements this
idea. It also fixes a handful of liveness bugs that this first version of
runRandomly() exposed.
Adds support for the get rollup job to the High Level REST Client. I had
to do three interesting and unexpected things:
1. I ported the rollup state wiping code into the high level client
tests. I'll move this into the test framework in a followup and remove
the x-pack version.
2. The `timeout` in the rollup config was serialized using the
`toString` representation of `TimeValue` which produces fractional time
values which are more human readable but aren't supported by parsing. So
I switched it to `getStringRep`.
3. Refactor the xcontent round trip testing utilities so we can test
parsing of classes that don't implements `ToXContent`.
Today we schedule tasks (both immediate and future ones) exactly when
requested. In fact it is more realistic to allow for a small amount of delay in
the scheduling of tasks, and this helps to exercise more interleavings of
actions and therefore to improve test coverage.
This change adds to the DeterministicTaskQueue the ability to add a random
delay to the scheduling of tasks.
This change also provides more explicit timeouts for stabilisation in the
CoordinatorTests.
Using the randomised scheduling feature in the CoordinatorTests also found a
situation in which we could become a leader, then a candidate, and then a
leader again very quickly, causing a clash of the _BECOME_MASTER_ and
_FINISH_ELECTION_ tasks. We change their behaviour to not consider these
duplicates to be problematic.
This change introduces the indexing optimization using sequence numbers
in the FollowingEngine. This optimization uses the max_seq_no_updates
which is tracked on the primary of the leader and replicated to replicas
and followers.
Relates #33656
Fixes the equals and hash function to ignore the order of aggregations to ensure equality after serialization
and deserialization. This ensures storing configs with aggregation works properly.
This also addresses a potential issue in caching when the same query contains aggregations but in
different order. 1st it will not hit in the cache, 2nd cache objects which shall be equal might end up twice in
the cache.
The synonym filters no longer need access to the AnalysisRegistry in their
constructors, so we can remove the special-case code and move them to the
common analysis module.
This commit means that synonyms are no longer available for `server` integration tests,
so several of these are either rewritten or migrated to the common analysis module
as rest-spec-api tests
This commit adds the ability to plug in compilation of custom contexts
in mock script engine. This is needed for testing plugins which add
custom contexts like watcher.
* Handle MatchNoDocsQuery in span query wrappers
This change adds a new SpanMatchNoDocsQuery query that replaces
MatchNoDocsQuery in the span query wrappers.
The `wildcard` query now returns MatchNoDocsQuery if the target field is not
in the mapping (#34093) so we need the equivalent span query in order to
be able to pass it to other span wrappers.
Closes#34105
EngineSearcher can be easily folded into Engine.Searcher which removes
a level of inheritance that is necessary for most of it's subclasses.
This change folds it into Engine.Searcher and removes the dependency on
ReferenceManager.
This commit duplicates REST tests for the
- `indices.create`
- `indices.put_mapping`
- `indices.get_mapping`
- `index`
- `get`
- `delete`
- `update`
- `bulk`
APIs, so that we both test them when used without types (include_type_name=false)
and with types, mostly for mixed-version cluster tests.
Given a suite called `X_test_name.yml`, I first copied it to
`(X+1)_test_name_with_types.yml` and then changed `X_test_name.yml` to set
`include_type_name=false` on every API that supports it.
Relates #15613
This commits creates a DateMathParser interface, which is already
implemented for both joda and java time. While currently the java time
DateMathParser is not used, this change will allow a followup which will
create a DateMathParser from a DateFormatter, so the caller does not
need to know the internals of the DateFormatter they have.
Previously, unmapped aggs try to delegate reduction to a sibling agg that is
mapped. That delegated agg will run the reductions, and also
reduce any pipeline aggs. But because delegation comes before running
pipelines, the unmapped agg _also_ tries to run pipeline aggs.
This causes the pipeline to run twice, and potentially double it's output
in buckets which can create invalid JSON (e.g. same key multiple times)
and break when converting to maps.
This fixes by sorting the list of aggregations ahead of time so that mapped
aggs appear first, meaning they preferentially lead the reduction. If all aggs
are unmapped, the first unmapped agg simply creates a new unmapped object
and returns that for the reduction.
This means that unmapped aggs no longer defer and there is no chance for
a secondary execution of pipelines (or other side effects caused by deferring
execution).
Closes#33514
This change cleans up "unused variable" warnings. There are several cases were we
most likely want to suppress the warnings (especially in the client documentation test
where the snippets contain many unused variables). In a lot of cases the unused
variables can just be deleted though.
This commit removes the sysprop controlling whether ctx is in params for
update scripts and replaces it with use of the new ParameterMap, which
outputs a deprecation warning whenever params.ctx is used.
We start tracking max seq_no_of_updates on the primary in #33842. This
commit replicates that value from a primary to its replicas in replication
requests or the translog phase of peer-recovery.
With this change, we guarantee that the value of max seq_no_of_updates
on a replica when any index/delete operation is performed at least the
max_seq_no_of_updates on the primary when that operation was executed.
Relates #33656
Today the CoordinatorTests are not very reliable if two elections are scheduled
concurrently. Although we expect occasional failures due to this, in fact the
failures are much more common than expected due to a handful of issues. This PR
fixes these issues.
This commit introduces an AbstractSimpleSecurityTransportTestCase for
security transports. This classes provides transport tests that are
specific for security transports. Additionally, it fixes the tests referenced in
#33285.
This PR is the first step to use seq_no to optimize indexing operations.
The idea is to track the max seq_no of either update or delete ops on a
primary, and transfer this information to replicas, and replicas use it
to optimize indexing plan for index operations (with assigned seq_no).
The max_seq_no_of_updates on primary is initialized once when a primary
finishes its local recovery or peer recovery in relocation or being
promoted. After that, the max_seq_no_of_updates is only advanced internally
inside an engine when processing update or delete operations.
Relates #33656
With recent changes to the logging framework, the node name can no longer be injected into the logging output using the node.name setting, which means that for the CoordinatorTests (which are simulating a cluster in a fully deterministic fashion using a single thread), as all the different nodes are running under the same test thread, we are not able to distinguish which log lines are coming from which node. This commit readds logging for node ids in the CoordinatorTests, making two very small changes to DeterministicTaskQueue and TestThreadInfoPatternConverter.
This commit reverts most of #33157 as it introduces another race
condition and breaks a common case of watcher, when the first watch is
added to the system and the index does not exist yet.
This means, that the index will be created, which triggers a reload, but
during this time the put watch operation that triggered this is not yet
indexed, so that both processes finish roughly add the same time and
should not overwrite each other but act complementary.
This commit reverts the logic of cleaning out the ticker engine watches
on start up, as this is done already when the execution is paused -
which also gets paused on the cluster state listener again, as we can be
sure here, that the watches index has not yet been created.
This also adds a new test, that starts a one node cluster and emulates
the case of a non existing watches index and a watch being added, which
should result in proper execution.
Closes#33320
* Setting SO_LINGER for open but not connected non-blocking sockets
throws on OSX
* Fixed by only applying setting to connected sockets which will save
the same number of FDs as doing it on open sockets anyway
* closes#33879
Today we don't store the auto-generated timestamp of append-only
operations in Lucene; and assign -1 to every index operations
constructed from LuceneChangesSnapshot. This looks innocent but it
generates duplicate documents on a replica if a retry append-only
arrives first via peer-recovery; then an original append-only arrives
via replication. Since the retry append-only (delivered via recovery)
does not have timestamp, the replica will happily optimizes the original
request while it should not.
This change transmits the max auto-generated timestamp from the primary
to replicas before translog phase in peer recovery. This timestamp will
prevent replicas from optimizing append-only requests if retry
counterparts have been processed.
Relates #33656
Relates #33222
It is important that follower nodes periodically check that their leader is
still healthy and that they remain part of its cluster. If these checks fail
repeatedly then followers should attempt to find and join a new leader,
possibly electing one in the process. The LeaderChecker, introduced in this
commit, performs these periodic checks and deals with retries.
Currently, assertSeqNos assumes that the cluster is stable at the end of
the test (i.e., no more shard movement). However, this assumption does
not always hold. In these cases, we can stop the assertion instead of
failing a test.
Closes#33704
Changes the default of the `node.name` setting to the hostname of the
machine on which Elasticsearch is running. Previously it was the first 8
characters of the node id. This had the advantage of producing a unique
name even when the node name isn't configured but the disadvantage of
being unrecognizable and not being available until fairly late in the
startup process. Of particular interest is that it isn't available until
after logging is configured. This forces us to use a volatile read
whenever we add the node name to the log.
Using the hostname is available immediately on startup and is generally
recognizable but has the disadvantage of not being unique when run on
machines that don't set their hostname or when multiple elasticsearch
processes are run on the same host. I believe that, taken together, it
is better to default to the hostname.
1. Running multiple copies of Elasticsearch on the same node is a fairly
advanced feature. We do it all the as part of the elasticsearch build
for testing but we make sure to set the node name then.
2. That the node.name defaults to some flavor of "localhost" on an
unconfigured box feels like it isn't going to come up too much in
production. I expect most production deployments to at least set the
hostname.
As a bonus, production deployments need no longer set the node name in
most cases. At least in my experience most folks set it to the hostname
anyway.
Wraps all lines in our test framework at 140 characters because that is
our standard line length and removes all of the checkstyle suppressions
for the test framework.
Drops most of `ModuleTestCase` because it isn't used and we're moving
away from using guice in the way that it wants to test anyway. Also
switches a few classes that extend it but don't use it to extend
`ESTestCase` instead.
* TESTS: Set SO_LINGER = 0 for MockNioTransport
* Prevents lingering sockets in TIME_WAIT piling up during test runs and leading to port collisions that manifest as timeouts
* Fixes#32552
This change fixes a bug introduced in 6.3 that prevents fields with an explicit
similarity to be updated. It also adds a test that checks this case for similarities
but also for analyzers since they could suffer from the same problem.
Closes#33611
Today we use a special unicast hosts provider, the `MockUncasedHostsProvider`,
in many integration tests, to deal with the dynamic nature of the allocation of
ports to nodes. However #33241 allows us to use file-based discovery to achieve
the same goal, so the special test-only `MockUncasedHostsProvider` is no longer
required.
This change removes `MockUncasedHostProvider` and replaces it with file-based
discovery in tests based on `EsIntegTestCase`.
For correctness we need to verify whether the history uuid of the leader
index shards never changes while that index is being followed.
* The history UUIDs are recorded as custom index metadata in the follow index.
* The follow api validates whether the current history UUIDs of the leader
index shards are the same as the recorded history UUIDs.
If not the follow api fails.
* While a follow index is following a leader index; shard follow tasks
on each shard changes api call verify whether their current history uuid
is the same as the recorded history uuid.
Relates to #30086
Co-authored-by: Nhat Nguyen <nhat.nguyen@elastic.co>
This change adds a `_source` only snapshot repository that allows to wrap
any existing repository as a _backend_ to snapshot only the `_source` part
including live docs markers. Snapshots taken with the `source` repository
won't include any indices, doc-values or points. The snapshot will be reduced in size and
functionality such that it requires full re-indexing after it's successfully restored.
The restore process will copy the `_source` data locally starts a special shard and engine
to allow `match_all` scrolls and searches. Any other query, or get call will fail with and unsupported operation exception. The restored index is also marked as read-only.
This feature aims mainly for disaster recovery use-cases where snapshot size is
a concern or where time to restore is less of an issue.
**NOTE**: The snapshot produced by this repository is still a valid lucene index. This change doesn't allow for any longer retention policies which is out of scope for this change.
When a replica starts following a newly promoted primary, it may have
some operations which don't exist on the new primary. Thus we need to
throw those operations to align a replica with the new primary. This can
be done by first resetting an engine from the safe commit, then replaying
the local translog up to the global checkpoint.
Relates #32867
Today the full cluster restart tests do not preserve cluster settings on
restart. This is a mistake because it is not an accurate reflection of
reality, we do not expect users to clear cluster settings when they
perform a full cluster restart. This commit makes it so that all full
cluster restart tests preserve settings on upgrade.
* LeafCollector.setScorer() now takes a Scorable
* Scorers may not have null Weights
* IndexWriter.getFlushingBytes() reports how much memory is being used by IW threads writing to disk
In some cases we want to skip wiping cluster settings after a REST
test. For example, one use-case would be in the full cluster restart
tests where want to test cluster settings before and after a full
cluster restart. If we wipe the cluster settings before the restart,
then it would not be possible to assert on them after the restart.
In some cases we want to deprecate a setting, and then automatically
upgrade uses of that setting to a replacement setting. This commit adds
infrastructure for this so that we can upgrade settings when recovering
the cluster state, as well as when such settings are dynamically applied
on cluster update settings requests. This commit only focuses on cluster
settings, index settings can build on this infrastructure in a
follow-up.
This commit adds license checks for the auto-follow implementation. We
check the license on put auto-follow patterns, and then for every
coordination round we check that the local and remote clusters are
licensed for CCR. In the case of non-compliance, we skip coordination
yet continue to schedule follow-ups.
This commit ensures that we bootstrap a new history_uuid when force
allocating a stale primary. A stale primary should never be the source
of an operation-based recovery to another shard which exists before the
forced-allocation.
Closes#26712
Change the logging infrastructure to handle when the node name isn't
available in `elasticsearch.yml`. In that case the node name is not
available until long after logging is configured. The biggest change is
that the node name logging no longer fixed at pattern build time.
Instead it is read from a `SetOnce` on every print. If it is unset it is
printed as `unknown` so we have something that fits in the pattern.
On normal startup we don't log anything until the node name is available
so we never see the `unknown`s.
Instead of passing DirectoryService which causes yet another dependency
on Store we can just pass in a Directory since we will just call
`DirectoryService#newDirectory()` on it anyway.
This change collapses all metrics aggregations classes into a single package `org.elasticsearch.aggregations.metrics`.
It also restricts the visibility of some classes (aggregators and factories) that should not be used outside of the package.
Relates #22868
Yannick Welsch
Tim Brooks
Henning Andersen
Armin Braun
Nhat Nguyen
Mayya Sharipova
Andrey Ershov
Jim Ferenczi
David Turner
Jason Tedor
Alpar Torok
Simon Willnauer
Adrien Grand
Tanguy Leroux
Lee Hinman
Tal Levy
Marios Trivyzas
Ioannis Kakavas
David Roberts
Christoph Büscher
Julie Tibshirani
Tim Vernum
Luca Cavanna
Yogesh Gaikwad
markharwood
Andrey Ershov
Yuri Astrakhan
Przemyslaw Gomulka
Alexander Reelsen
Nik Everett
Colin Goodheart-Smithe
Boaz Leskes
Marios Trivyzas
Daniel Mitterdorfer
David Findley
Josh Soref
Alan Woodward
Ryan Ernst
Nicholas Knize
Jernej Klancic
Zachary Tong
Zachary Tong
Christophe Bismuth
Gordon Brown
Arthur Gavlyukovskiy
Lee Hinman
Igor Motov
Seong-hyun, Oh
Andy Bristol
Pratik Sanglikar
Jay Modi
lipsill
Martijn van Groningen
Kazuhiro Sera
Hendrik Muhs
Yogesh Gaikwad
Vladimir Dolzhenko
Tim Vernum
Or Bin