Allows users of the Low Level REST client to specify which hosts a
request should be run on. They implement the `NodeSelector` interface
or reuse a built in selector like `NOT_MASTER_ONLY` to chose which nodes
are valid. Using it looks like:
```
Request request = new Request("POST", "/foo/_search");
RequestOptions options = request.getOptions().toBuilder();
options.setNodeSelector(NodeSelector.NOT_MASTER_ONLY);
request.setOptions(options);
...
```
This introduces a new `Node` object which contains a `HttpHost` and the
metadata about the host. At this point that metadata is just `version`
and `roles` but I plan to add node attributes in a followup. The
canonical way to **get** this metadata is to use the `Sniffer` to pull
the information from the Elasticsearch cluster.
I've marked this as "breaking-java" because it breaks custom
implementations of `HostsSniffer` by renaming the interface to
`NodesSniffer` and by changing it from returning a `List<HttpHost>` to a
`List<Node>`. It *shouldn't* break anyone else though.
Because we expect to find it useful, this also implements `host_selector`
support to `do` statements in the yaml tests. Using it looks a little
like:
```
---
"example test":
- skip:
features: host_selector
- do:
host_selector:
version: " - 7.0.0" # same syntax as skip
apiname:
something: true
```
The `do` section parses the `version` string into a host selector that
uses the same version comparison logic as the `skip` section. When the
`do` section is executed it passed the off to the `RestClient`, using
the `ElasticsearchHostsSniffer` to sniff the required metadata.
The idea is to use this in mixed version tests to target a specific
version of Elasticsearch so we can be sure about the deprecation
logging though we don't currently have any examples that need it. We do,
however, have at least one open pull request that requires something
like this to properly test it.
Closes#21888
This removes the abstract `getTranslog` method in `Engine`, instead leaving it
to the abstract implementations of the other methods that use the translog. This
allows future Engines not to have a Translog, as instead they must implement the
methods that use the translog pieces to return necessary values.
* Fully encapsulate LocalCheckpointTracker inside of the engine
This makes the Engine interface not expose the `LocalCheckpointTracker`, instead
exposing the pieces needed (like retrieving the local checkpoint) as individual
methods.
* Remove DocumentFieldMappers#simpleMatchToFullName, as it is duplicative of MapperService#simpleMatchToIndexNames.
* Rename MapperService#simpleMatchToIndexNames -> simpleMatchToFullName for consistency.
* Simplify EsIntegTestCase#assertConcreteMappingsOnAll to accept concrete fields instead of wildcard patterns.
This is related to #27260. This commit combines the AcceptingSelector
and SocketSelector classes into a single NioSelector. This change
allows the same selector to handle both server and socket channels. This
is valuable as we do not necessarily want a dedicated thread running for
accepting channels.
With this change, this commit removes the configuration for dedicated
accepting selectors for the normal transport class. The accepting
workload for new node connections is likely low, meaning that there is
no need to dedicate a thread to this process.
This commit adds a new writeBlobAtomic() method to the BlobContainer
interface that can be implemented by repository implementations which
support atomic writes operations.
When the BlobContainer implementation does not provide a specific
implementation of writeBlobAtomic(), then the writeBlob() method is used.
Related to #30680
ObjectParser should throw XContentParseExceptions, not IAE. A dedicated parsing
exception can includes the place where the error occurred.
Closes#30605
With #31020 we introduced the ability for transport clients to indicate what features they support
in order to make sure we don't serialize object to them they don't support. This PR adapts the
serialization logic of persistent tasks to be aware of those features and not serialize tasks that
aren't supported.
Also, a version check is added for the future where we may add new tasks implementations and
need to be able to indicate they shouldn't be serialized both to nodes and clients.
As the implementation relies on the interface of `PersistentTaskParams`, these are no longer
optional. That's acceptable as all current implementation have them and we plan to make
`PersistentTaskParams` more central in the future.
Relates to #30731
This commit introduces the ability for a client to communicate to the
server features that it can support and for these features to be used in
influencing the decisions that the server makes when communicating with
the client. To this end we carry the features from the client to the
underlying stream as we carry the version of the client today. This
enables us to enhance the logic where we make protocol decisions on the
basis of the version on the stream to also make protocol decisions on
the basis of the features on the stream. With such functionality, the
client can communicate to the server if it is a transport client, or if
it has, for example, X-Pack installed. This enables us to support
rolling upgrades from the OSS distribution to the default distribution
without breaking client connectivity as we can now elect to serialize
customs in the cluster state depending on whether or not the client
reports to us using the feature capabilities that it can under these
customs. This means that we would avoid sending a client pieces of the
cluster state that it can not understand. However, we want to take care
and always send the full cluster state during node-to-node communication
as otherwise we would end up with different understanding of what is in
the cluster state across nodes depending on which features they reported
to have. This is why when deciding whether or not to write out a custom
we always send the custom if the client is not a transport client and
otherwise do not send the custom if the client is transport client that
does not report to have the feature required by the custom.
Co-authored-by: Yannick Welsch <yannick@welsch.lu>
This change adds an option named `split_queries_on_whitespace` to the `keyword`
field type. When set to true full text queries (`match`, `multi_match`, `query_string`, ...) that target the field will split the input on whitespace to build the query terms. Defaults to `false`.
Closes#30393
This modifies the high level rest client to allow calling code to
customize per request options for the bulk API. You do the actual
customization by passing a `RequestOptions` object to the API call
which is set on the `Request` that is generated by the high level
client. It also makes the `RequestOptions` a thing in the low level
rest client. For now that just means you use it to customize the
headers and the `httpAsyncResponseConsumerFactory` and we'll add
node selectors and per request timeouts in a follow up.
I only implemented this on the bulk API because it is the first one
in the list alphabetically and I wanted to keep the change small
enough to review. I'll convert the remaining APIs in a followup.
This commit removes the RequestBuilder generic type from Action. It was
needed to be used by the newRequest method, which in turn was used by
client.prepareExecute. Both of these methods are now removed, along with
the existing users of prepareExecute constructing the appropriate
builder directly.
Include size of snapshot in snapshot metadata
Adds difference of number of files (and file sizes) between prev and current snapshot. Total number/size reflects total number/size of files in snapshot.
Closes#18543
Currently nio and netty modules use the CompletableFuture class for
managing listeners. This is unfortunate as that class accepts
Throwable. This commit adds a class CompletableContext that wraps
the CompletableFuture but does not accept Throwable. This allows the
modification of netty and nio logic to no longer handle Throwable.
Today, the `ClusterApplier` and `MasterService` both use the
`ClusterStateTaskListener` interface to notify their callers when asynchronous
activities have completed. However, this is not wholly appropriate: none of the
callers into the `ClusterApplier` care about the `ClusterState` arguments that
they receive. This change introduces a dedicated ClusterApplyListener
interface for callers into the `ClusterApplier`, to distinguish these listeners
from the real `ClusterStateTaskListener`s that are waiting for responses from
the `MasterService`.
This commit reintroduces 31251c9 and 63a5799. These commits introduced a
memory leak and were reverted. This commit brings those commits back
and fixes the memory leak by removing unnecessary retain method calls.
This reverts commit 31251c9 introduced in #30695.
We suspect this commit is causing the OOME's reported in #30811 and we will use this PR to test this assertion.
When doing a node restart using the test framework, the restarted node does not only use the
settings provided to the original node, but also additional settings provided by plugin extensions,
which does not correspond to the settings that a node would have on a true restart.
This is related to #29500. We are removing the ability to disable http
pipelining. This PR removes the references to disabling pipelining in
the integration test case.
Adding headers rather than setting them all at once seems more
user-friendly and we already do it in a similar way for parameters
(see Request#addParameter).
The new snapshot includes LUCENE-8324 which fixes missing checkpoint
after a fully deletes segment is dropped on flush. This snapshot should
resolves failed tests in the CorruptedFileIT suite.
Closes#30741Closes#30577
This is related to #29500 and #28898. This commit removes the abilitiy
to disable http pipelining. After this commit, any elasticsearch node
will support pipelined requests from a client. Additionally, it extracts
some of the http pipelining work to the server module. This extracted
work is used to implement pipelining for the nio plugin.
This is related to #27260. The elasticsearch-nio jar is supposed to be
a library opposed to a framework. Currently it internally logs certain
exceptions. This commit modifies it to not rely on logging. Instead
exception handlers are passed by the applications that use the jar.
Meta plugins existed only for a short time, in order to enable breaking
up x-pack into multiple plugins. However, now that x-pack is no longer
installed as a plugin, the need for them has disappeared. This commit
removes the meta plugins infrastructure.
Date histograms on non-fixed timezones such as `Europe/Paris` proved much slower
than histograms on fixed timezones in #28727. This change mitigates the issue by
using a fixed time zone instead when shard data doesn't cross a transition so
that all timestamps share the same fixed offset. This should be a common case
with daily indices.
NOTE: Rewriting the aggregation doesn't work since the timezone is then also
used on the coordinating node to create empty buckets, which might be out of the
range of data that exists on the shard.
NOTE: In order to be able to get a shard context in the tests, I reused code
from the base query test case by creating a new parent test case for both
queries and aggregations: `AbstractBuilderTestCase`.
Mitigates #28727
This pipeline aggregation gives the user the ability to script functions that "move" across a window
of data, instead of single data points. It is the scripted version of MovingAvg pipeline agg.
Through custom script contexts, we expose a number of convenience methods:
- MovingFunctions.max()
- MovingFunctions.min()
- MovingFunctions.sum()
- MovingFunctions.unweightedAvg()
- MovingFunctions.linearWeightedAvg()
- MovingFunctions.ewma()
- MovingFunctions.holt()
- MovingFunctions.holtWinters()
- MovingFunctions.stdDev()
The user can also define any arbitrary logic via their own scripting, or combine with the above methods.
This change adds a `listTasks` method to the high level java
ClusterClient which allows listing running tasks through the
task management API.
Related to #27205
A 6.x node can send a deprecation message that the default number of
shards will change from five to one in 7.0.0. In a mixed cluster,
whether or not a create index request sees five or one shard and
produces a deprecation message depends on the version of the master
node. This means that during BWC tests a test can see this deprecation
message depending on the version of the master node. In 6.x when we
introduced this deprecation message we assumed that whereever we see
this deprecation message is expected. However, in a mixed cluster test
we need a similar mechanism but it would only apply if the version of
the master node is earlier than 7.0.0. This commit takes advantage of a
recent change to expose the version of the master node to do sections of
REST tests. With this in hand, we can skip asserting on the deprecation
message if the version of the master node is before 7.0.0 and otherwise
seeing that deprecation message would be completely unexpected.
This commit is related to #28898. It adds an nio driven http server
transport. Currently it only supports basic http features. Cors,
pipeling, and read timeouts will need to be added in future PRs.
This commit exposes the master version to the REST test context. This
will be needed in a follow-up where the master version will be used to
determine whether or not a certain warning header is expected.
This configures all `qa` projects to use the distribution contained in
the `tests.distribution` system property if it is set. The goal is to
create a simple way to run tests against the default distribution which
has x-pack basic features enabled while not forcing these tests on all
contributors. You run these tests by doing something like:
```
./gradlew -p qa -Dtests.distribution=zip check
```
or
```
./gradlew -p qa -Dtests.distribution=zip bwcTest
```
x-pack basic *shouldn't* get in the way of any of these tests but
nothing is ever perfect so this we have to disable a few when running
with the zip distribution.
This commit changes the default out-of-the-box configuration for the
number of shards from five to one. We think this will help address a
common problem of oversharding. For users with time-based indices that
need a different default, this can be managed with index templates. For
users with non-time-based indices that find they need to re-shard with
the split API in place they no longer need to resort only to
reindexing.
Since this has the impact of changing the default number of shards used
in REST tests, we want to ensure that we still have coverage for issues
that could arise from multiple shards. As such, we randomize (rarely)
the default number of shards in REST tests to two. This is managed via a
global index template. However, some tests check the templates that are
in the cluster state during the test. Since this template is randomly
there, we need a way for tests to skip adding the template used to set
the number of shards to two. For this we add the default_shards feature
skip. To avoid having to write our docs in a complicated way because
sometimes they might be behind one shard, and sometimes they might be
behind two shards we apply the default_shards feature skip to all docs
tests. That is, these tests will always run with the default number of
shards (one).
The following tokenizers were moved: classic, edge_ngram,
letter, lowercase, ngram, path_hierarchy, pattern, thai, uax_url_email and
whitespace.
Left keyword tokenizer factory in server module, because
normalizers directly depend on it.This should be addressed on a
follow up change.
Relates to #23658
There's no need for an extra `blobExists()` call when writing a blob to the HDFS service. The writeBlob implementation for the HDFS repository already uses the `CreateFlag.CREATE` option on the file creation, which ensures that the blob that's uploaded does not already exist. This saves one network roundtrip.
The TokenMetaData equals method compared byte arrays using `.equals` on
the arrays themselves, which is the equivalent of an `==` check. This
means that a seperate byte[] with the same contents would not be
considered equivalent to the existing one, even though it should be.
The method has been updated to use `Array#equals` and similarly the
hashcode method has been updated to call `Arrays#hashCode` instead of
calling hashcode on the array itself.
This commit removes a test that we can not restore from 1.x and 2.x
repository files. This test is not needed, the version of Elasticsearch
that this commit targets can not even read index files from those
versions.
We have a pile of documentation describing how to rebuild the built in
language analyzers and, previously, our documentation testing framework
made sure that the examples successfully built *an* analyzer but they
didn't assert that the analyzer built by the documentation matches the
built in anlayzer. Unsuprisingly, some of the examples aren't quite
right.
This adds a mechanism that tests that the analyzers built by the docs.
The mechanism is fairly simple and brutal but it seems to be working:
build a hundred random unicode sequences and send them through the
`_analyze` API with the rebuilt analyzer and then again through the
built in analyzer. Then make sure both APIs return the same results.
Each of these calls to `_anlayze` takes about 20ms on my laptop which
seems fine.
When deleting or creating a snapshot for a given shard, elasticsearch
usually starts by listing all the existing snapshotted files in the repository.
Then it computes a diff and deletes the snapshotted files that are not
needed anymore. During this deletion, an exception is thrown if the file
to be deleted does not exist anymore.
This behavior is challenging with cloud based repository implementations
like S3 where a file that has been deleted can still appear in the bucket for
few seconds/minutes (because the deletion can take some time to be fully
replicated on S3). If the deleted file appears in the listing of files, then the
following deletion will fail with a NoSuchFileException and the snapshot
will be partially created/deleted.
This pull request makes the deletion of these files a bit less strict, ie not
failing if the file we want to delete does not exist anymore. It introduces a
new BlobContainer.deleteIgnoringIfNotExists() method that can be used
at some specific places where not failing when deleting a file is
considered harmless.
Closes#28322
Upgrade to lucene-7.4.0-snapshot-1ed95c097b
This version contains:
* An Analyzer for Korean
* An IntervalQuery and IntervalsSource that retrieve minimum intervals of positional queries.
* A new API to retrieve matches (offsets and positions) of a query for a single document.
* Support for soft deletes in the index writer.
* A fixed shingle filter that handles index time synonyms.
* Support for emoji sequence in ICUTokenizer (with an upgrade to icu 61.1)
Fix NPE when CumulativeSum agg encounters null/empty bucket
If the cusum agg encounters a null value, it's because the value is
missing (like the first value from a derivative agg), the path is
not valid, or the bucket in the path was empty.
Previously cusum would just explode on the null, but this changes it
so we only increment the sum if the value is non-null and finite.
This is safe because even if the cusum encounters all null or empty
buckets, the cumulative sum is still zero (like how the sum agg returns
zero even if all the docs were missing values)
I went ahead and tweaked AggregatorTestCase to allow testing pipelines,
so that I could delete the IT test and reimplement it as AggTests.
Closes#27544
This commit removes the http.enabled setting. While all real nodes (started with bin/elasticsearch) will always have an http binding, there are many tests that rely on the quickness of not actually needing to bind to 2 ports. For this case, the MockHttpTransport.TestPlugin provides a dummy http transport implementation which is used by default in ESIntegTestCase.
closes#12792
This commit refactors VersionUtils.resolveReleasedVersions to be
simpler, and in the process fixes the behavior to match that of
VersionCollection.groovy.
closes#30133
Starting with the refactoring in https://github.com/elastic/elasticsearch/pull/22778 (released in 5.3) we may fail to properly replicate operation when a mapping update on master fails. If a bulk
operations needs a mapping update half way, it will send a request to the master before continuing
to index the operations. If that request times out or isn't acked (i.e., even one node in the cluster
didn't process it within 30s), we end up throwing the exception and aborting the entire bulk. This is
a problem because all operations that were processed so far are not replicated any more to the
replicas. Although these operations were never "acked" to the user (we threw an error) it cause the
local checkpoint on the replicas to lag (on 6.x) and the primary and replica to diverge.
This PR does a couple of things:
1) Most importantly, treat *any* mapping update failure as a document level failure, meaning only
the relevant indexing operation will fail.
2) Removes the mapping update callbacks from `IndexShard.applyIndexOperationOnPrimary` and
similar methods for simpler execution. We don't use exceptions any more when a mapping
update was successful.
I think we need to do more work here (the fact that a single slow node can prevent those mappings
updates from being acked and thus fail operations is bad), but I want to keep this as small as I can
(it is already too big).
`javadoc` will switch from detaulting to html4 to html5 in "a future
release". We should get ahead of it so we're not surprised. Also, HTML5
is the future! Er, the present. Anyway, this follows up from #30220 to
make the Javadoc for two of the four remaining projects HTML5
compatible.
The internal test cluster can sometimes have 0 nodes. In this situation,
the http.enabled flag will never be read, and thus no deprecation
warning will be emitted. This commit guards the deprecation warning
check in this case.
Today the translog of an engine is exposed and can be accessed directly.
While this exposure offers much flexibility, it also causes these troubles:
- Inconsistent behavior between translog method and engine method.
For example, rolling a translog generation via an engine also trims
unreferenced files, but translog's method does not.
- An engine does not get notified when critical errors happen in translog
as the access is direct.
This change isolates translog of an engine and enforces all accesses to
translog via the engine.
The index thread pool is no longer needed as its primary use-case for
single-document indexing requests has been relieved now that
single-document indexing requests are converted to bulk indexing
requests (with a single document payload).
This adds 2 testcases that test if a shard goes idle
pending (uncommitted) segments are committed and unreferenced
files will be freed.
Relates to #29482
This change adds the current primary term to the header of the current
translog file. Having a term in a translog header is a prerequisite step
that allows us to trim translog operations given the max valid seq# for
that term.
This commit also updates tests to conform the primary term invariant
which guarantees that all translog operations in a translog file have
its terms at most the term stored in the translog header.
* Add a helper method to get a random java.util.TimeZone
This adds a helper method to ESTestCase that returns a randomized
`java.util.TimeZone`. This can be used when transitioning code from Joda to the
JDK's time classes.
Some features have been deprecated since `6.0` like the `_parent` field or the
ability to have multiple types per index. This allows to remove quite some
code, which in-turn will hopefully make it easier to proceed with the removal
of types.
Currently rest-based tests do not work from the IDE, as the security
manager is configured to permit certain network operations when
using the snapshot jars compiled by gradle. We have an existing
workaround that explicitly associates a codebase with the path
from which the classes are loaded (in this case, the IDE build
directory). This PR adds the rest client to this workaround list.
* Move Streams.copy into elasticsearch-core and make a multi-release jar
This moves the method `Streams.copy(InputStream in, OutputStream out)` into the
`elasticsearch-core` project (inside the `o.e.core.internal.io` package). It
also makes this class into a multi-release class where the Java 9 equivalent
uses `InputStream#transferTo`.
This is a followup from
https://github.com/elastic/elasticsearch/pull/29300#discussion_r178147495
* Move ObjectParser into the x-content lib
This moves `ObjectParser`, `AbstractObjectParser`, and
`ConstructingObjectParser` into the libs/x-content dependency. This decoupling
allows them to be used for parsing for projects that don't want to depend on the
entire Elasticsearch jar.
Relates to #28504
* Fixes query_string query equals timezone check
This change fixes a bug where two `QueryStringQueryBuilder`s were found
to be equal if they had the same timezone set even if the query string
in the builders were different
Closes#29403
* Adds mutate function to QueryStringQueryBuilderTests
* iter
This improves the way similarities are plugged in in order to:
- reject the classic similarity on 7.x indices and emit a deprecation
warning otherwise
- reject unkwown parameters on 7.x indices and emit a deprecation
warning otherwise
Even though this breaks the plugin API, I'd like to backport to 7.x so
that users can get deprecation warnings when they are doing something
that will become unsupported in the future.
Closes#23208Closes#29035
* Begin moving XContent to a separate lib/artifact
This commit moves a large portion of the XContent code from the `server` project
to the `libs/xcontent` project. For the pieces that have been moved, some
helpers have been duplicated to allow them to be decoupled from ES helper
classes. In addition, `Booleans` and `CheckedFunction` have been moved to the
`elasticsearch-core` project.
This decoupling is a move so that we can eventually make things like the
high-level REST client not rely on the entire ES jar, only the parts it needs.
There are some pieces that are still not decoupled, in particular some of the
XContent tests still remain in the server project, this is because they test a
large portion of the pluggable xcontent pieces through
`XContentElasticsearchException`. They may be decoupled in future work.
Additionally, there may be more piecese that we want to move to the xcontent lib
in the future that are not part of this PR, this is a starting point.
Relates to #28504
Removes a set of assertions in the test framework that verified that
Streamable objects could be serialized and deserialized across different
versions. When this was discussed the consensus was that this approach
has not caught many bugs in a long time and that serialization testing of
objects was best left to their respective unit and integration tests.
This commit also removes a transport interceptor that was used in
ESIntegTestCase tests to make these assertions about objects coming in
or off the wire.
Today we have a few problems with how we handle bad requests:
- handling requests with bad encoding
- handling requests with invalid value for filter_path/pretty/human
- handling requests with a garbage Content-Type header
There are two problems:
- in every case, we give an empty response to the client
- in most cases, we leak the byte buffer backing the request!
These problems are caused by a broader problem: poor handling preparing
the request for handling, or the channel to write to when the response
is ready. This commit addresses these issues by taking a unified
approach to all of them that ensures that:
- we respond to the client with the exception that blew us up
- we do not leak the byte buffer backing the request
We historically removed reading from the transaction log to get consistent
results from _GET calls. There was also the motivation that the read-modify-update
principle we apply should not be hidden from the user. We still agree on the fact
that we should not hide these aspects but the impact on updates is quite significant
especially if the same documents is updated before it's written to disk and made serachable.
This change adds back the ability to read from the transaction log but only for update calls.
Calls to the _GET API will always do a refresh if necessary to return consistent results ie.
if stored fields or DocValues Fields are requested.
Closes#26802
Once a document is deleted and Lucene is refreshed, we will not be able
to look up the `version/seq#` associated with that delete in Lucene. As
conflicting operations can still be indexed, we need another mechanism
to remember these deletes. Therefore deletes should still be stored in
the Version Map, even after Lucene is refreshed. Obviously, we can't
remember all deletes forever so a trimming mechanism is needed.
Currently, we remember deletes for at least 1 minute (the default GC
deletes cycle) and clean them periodically. This is, at the moment, the
best we can do on the primary for user facing APIs but this arbitrary
time limit is problematic for replicas. Furthermore, we can't rely on
the primary and replicas doing the trimming in a synchronized manner,
and failing to do so results in the replica and primary making different
decisions.
The following scenario can cause inconsistency between
primary and replica.
1. Primary index doc (index, id=1, v2)
2. Network packet issue causes index operation to back off and wait
3. Primary deletes doc (delete, id=1, v3)
4. Replica processes delete (delete, id=1, v3)
5. 1+ minute passes (GC deletes runs replica)
6. Indexing op is finally sent to the replica which no processes it
because it forgot about the delete.
We can reply on sequence-numbers to prevent this issue. If we prune only
deletes whose seqno at most the local checkpoint, a replica will
correctly remember what it needs. The correctness is explained as
follows:
Suppose o1 and o2 are two operations on the same document with seq#(o1)
< seq#(o2), and o2 arrives before o1 on the replica. o2 is processed
normally since it arrives first; when o1 arrives it should be discarded:
1. If seq#(o1) <= LCP, then it will be not be added to Lucene, as it was
already previously added.
2. If seq#(o1) > LCP, then it depends on the nature of o2:
- If o2 is a delete then its seq# is recorded in the VersionMap,
since seq#(o2) > seq#(o1) > LCP, so a lookup can find it and
determine that o1 is stale.
- If o2 is an indexing then its seq# is either in Lucene (if
refreshed) or the VersionMap (if not refreshed yet), so a
real-time lookup can find it and determine that o1 is stale.
In this PR, we prefer to deploy a single trimming strategy, which
satisfies both requirements, on primary and replicas because:
- It's simpler - no need to distinguish if an engine is running at
primary mode or replica mode or being promoted.
- If a replica subsequently is promoted, user experience is fully
maintained as that replica remembers deletes for the last GC cycle.
However, the version map may consume less memory if we deploy two
different trimming strategies for primary and replicas.
#28245 has introduced the utility class`EngineDiskUtils` with a set of methods to prepare/change
translog and lucene commit points. That util class bundled everything that's needed to create and
empty shard, bootstrap a shard from a lucene index that was just restored etc.
In order to safely do these manipulations, the util methods acquired the IndexWriter's lock. That
would sometime fail due to concurrent shard store fetching or other short activities that require the
files not to be changed while they read from them.
Since there is no way to wait on the index writer lock, the `Store` class has other locks to make
sure that once we try to acquire the IW lock, it will succeed. To side step this waiting problem, this
PR folds `EngineDiskUtils` into `Store`. Sadly this comes with a price - the store class doesn't and
shouldn't know about the translog. As such the logic is slightly less tight and callers have to do the
translog manipulations on their own.
This change refactors the composite aggregation to add an execution mode that visits documents in the order of the values
present in the leading source of the composite definition. This mode does not need to visit all documents since it can early terminate
the collection when the leading source value is greater than the lowest value in the queue.
Instead of collecting the documents in the order of their doc_id, this mode uses the inverted lists (or the bkd tree for numerics) to collect documents
in the order of the values present in the leading source.
For instance the following aggregation:
```
"composite" : {
"sources" : [
{ "value1": { "terms" : { "field": "timestamp", "order": "asc" } } }
],
"size": 10
}
```
... can use the field `timestamp` to collect the documents with the 10 lowest values for the field instead of visiting all documents.
For composite aggregation with more than one source the execution can early terminate as soon as one of the 10 lowest values produces enough
composite buckets. For instance if visiting the first two lowest timestamp created 10 composite buckets we can early terminate the collection since it
is guaranteed that the third lowest timestamp cannot create a composite key that compares lower than the one already visited.
This mode can execute iff:
* The leading source in the composite definition uses an indexed field of type `date` (works also with `date_histogram` source), `integer`, `long` or `keyword`.
* The query is a match_all query or a range query over the field that is used as the leading source in the composite definition.
* The sort order of the leading source is the natural order (ascending since postings and numerics are sorted in ascending order only).
If these conditions are not met this aggregation visits each document like any other agg.
* Remove BytesArray and BytesReference usage from XContentFactory
This removes the usage of `BytesArray` and `BytesReference` from
`XContentFactory`. Instead, a regular `byte[]` should be passed. To assist with
this a helper has been added to `XContentHelper` that will preserve the offset
and length from the underlying BytesReference.
This is part of ongoing work to separate the XContent parts from ES so they can
be factored into their own jar.
Relates to #28504
`$_path` is used by documentation tests to ignore a value from a
response, for example:
```
[source,js]
----
{
"count": 1,
"datafeeds": [
{
"datafeed_id": "datafeed-total-requests",
"state": "started",
"node": {
...
"attributes": {
"ml.machine_memory": "17179869184",
"ml.max_open_jobs": "20",
"ml.enabled": "true"
}
},
"assignment_explanation": ""
}
]
}
----
// TESTRESPONSE[s/"17179869184"/$body.$_path/]
```
That example shows `17179869184` in the compiled docs but when it runs
the tests generated by that doc it ignores `17179869184` and asserts
instead that there is a value in that field. This is required because we
can't predict things like "how many milliseconds will this take?" and
"how much memory will this take?".
Before this change it was impossible to use `$_path` when any component
of the path contained a `.`. This fixes the `$_path` evaluator to
properly escape `.`.
Closes#28770
Changes made in #28972 seems to have changed some assumptions about how
SMILE and CBOR write byte[] values and how this is tested. This changes
the generation of the randomized DocumentField values back to BytesArray
while expecting the JSON and YAML deserialisation to produce Base64
encoded strings and SMILE and CBOR to parse back BytesArray instances.
Closes#29080
Currently we have a fairly complicated logic in the engine constructor logic to deal with all the
various ways we want to mutate the lucene index and translog we're opening.
We can:
1) Create an empty index
2) Use the lucene but create a new translog
3) Use both
4) Force a new history uuid in all cases.
This leads complicated code flows which makes it harder and harder to make sure we cover all the
corner cases. This PR tries to take another approach. Constructing an InternalEngine always opens
things as they are and all needed modifications are done by static methods directly on the
directory, one at a time.
* Decouple XContentBuilder from BytesReference
This commit removes all mentions of `BytesReference` from `XContentBuilder`.
This is needed so that we can completely decouple the XContent code and move it
into its own dependency.
While this change appears large, it is due to two main changes, moving
`.bytes()` and `.string()` out of XContentBuilder itself into static methods
`BytesReference.bytes` and `Strings.toString` respectively. The rest of the
change is code reacting to these changes (the majority of it in tests).
Relates to #28504
As we have factored Elasticsearch into smaller libraries, we have ended
up in a situation that some of the dependencies of Elasticsearch are not
available to code that depends on these smaller libraries but not server
Elasticsearch. This is a good thing, this was one of the goals of
separating Elasticsearch into smaller libraries, to shed some of the
dependencies from other components of the system. However, this now
means that simple utility methods from Lucene that we rely on are no
longer available everywhere. This commit copies IOUtils (with some small
formatting changes for our codebase) into the fold so that other
components of the system can rely on these methods where they no longer
depend on Lucene.
I have long wanted an actual test that dying with dignity works. It is
tricky because if dying with dignity works, it means the test JVM dies
which is usually an abnormal condition. And anyway, how does one force a
fatal error to be thrown. I was motivated to investigate this again by
the fact that I missed a backport to one branch leading to an issue
where Elasticsearch would not successfully die with dignity. And now we
have a solution: we install a plugin that throws an out of memory error
when it receives a request. We hack the standalone test infrastructure
to prevent this from failing the test. To do this, we bypass the
security manager and remove the PID file for the node; this tricks the
test infrastructure into thinking that it does not need to stop the
node. We also bypass seccomp so that we can fork jps to make sure that
Elasticsearch really died. And to be extra paranoid, we parse the logs
of the dead Elasticsearch process to make sure it died with
dignity. Never forget.
Today we have two test base classes that have a lot in common when it comes to testing wire and xcontent serialization: `AbstractSerializingTestCase` and `AbstractXContentStreamableTestCase`. There are subtle differences though between the two, in the way they work, what can be overridden and features that they support (e.g. insertion of random fields).
This commit introduces a new base class called `AbstractWireTestCase` which holds all of the serialization test code in common between `Streamable` and `Writeable`. It has two minimal subclasses called `AbstractWireSerializingTestCase` and `AbstractStreamableTestCase` which are specialized for `Writeable` and `Streamable`.
This commit also introduces a new test class called `AbstractXContentTestCase` for all of the xContent testing, which holds a testFromXContent method for parsing and rendering to xContent. This one can be delegated to from the existing `AbstractStreamableXContentTestCase` and `AbstractSerializingTestCase` so that we avoid code duplicate as much as possible and all these base classes offer the same functionalities in the same way. Having this last base class decoupled from the serialization testing may also help with the REST high-level client testing, as there are some classes where it's hard to implement equals/hashcode and this makes it possible to override `assertEqualInstances` for custom equality comparisons (also this base class doesn't require implementing equals/hashcode as it doesn't test such methods.
This commit is related to #27260. Currently there is a weird
relationship between channel contexts and nio channels. The selectors
use the context for read and writing. But the selector operates directly
on the nio channel for registering, closing, and connecting.
This commit works on improving this relationship. The selector operates
directly on the context which wraps the low level java.nio.channels. The
NioChannel class is simply an API that is used to interact with the
channel (sending messages from outside the selector event loop,
scheduling a close, adding listeners, etc). The context is only used
internally by the channel to implement these apis and by the selector to
perform these operations.
This allows us to save a bit of code, but also adds more coverage as it tests serialization which was missing in some of the existing tests. Also it requires implementing equals/hashcode and we get the corresponding tests for them for free from the base test class.
* Pass InputStream when creating XContent parser
Rather than passing the raw `BytesReference` in when creating the xcontent
parser, this passes the StreamInput (which is an InputStream), this allows us to
decouple XContent from BytesReference.
This also removes the use of `commons.Booleans` so it doesn't require more
external commons classes.
Related to #28504
* Undo boolean removal
* Enhance deprecation javadoc
Add support version and version_type in ingest pipelines
Add support for setting document version and version type in set
processor of an ingest pipeline.
* Remove log4j dependency from elasticsearch-core
This removes the log4j dependency from our elasticsearch-core project. It was
originally necessary only for our jar classpath checking. It is now replaced by
a `Consumer<String>` so that the es-core dependency doesn't have external
dependencies.
The parts of #28191 which were moved in conjunction (like `ESLoggerFactory` and
`Loggers`) have been moved back where appropriate, since they are not required
in the core jar.
This is tangentially related to #28504
* Add javadocs for `output` parameter
* Change @code to @link
Today we have several levels of indirection to acquire an Engine.Searcher.
We first acquire a the reference manager for the scope then acquire an
IndexSearcher and then create a searcher for the engine based on that.
This change simplifies the creation into a single method call instead of
3 different ones.
Previously we introduced a new parameter to `acquireIndexCommit` to
allow acquire either a safe commit or a last commit. However with the
new parameters, callers can provide a nonsense combination - flush first
but acquire the safe commit. This commit separates acquireIndexCommit
method into two different methods to avoid that problem. Moreover, this
change should also improve the readability.
Relates #28038
The REST high-level client supports now encoding of path parts, so that for instance documents with valid ids, but containing characters that need to be encoded as part of urls (`#` etc.), are properly supported. We also make sure that each path part can contain `/` by encoding them properly too.
Closes#28625
Currently the Translog constructor is capable both of opening an existing translog and creating a
new one (deleting existing files). This PR separates these two into separate code paths. The
constructors opens files and a dedicated static methods creates an empty translog.
* Move more XContent.createParser calls to non-deprecated version
Part 2
This moves more of the callers to pass in the DeprecationHandler.
Relates to #28504
* Use parser's deprecation handler where appropriate
* Use logging handler in test that uses deprecated field on purpose
* Move more XContent.createParser calls to non-deprecated version
This moves more of the callers to pass in the DeprecationHandler.
Relates to #28504
* Use parser's deprecation handler where available
Version Utils did not previously have logic that removed the last majors
minor snapshot if there was a next bugfix and maintenance bugfix
release. This adds the logic and fixes some broken assumptions in tests
as well.
relates #28505
The build.snapshot was mistakenly passed in to every snapshot version,
so when release tests were run, these versions were mistaken as released
entities and could not be found in maven, because they do not
exist. This fix removes that bug in logic, and always makes them proper
snapshots. This has a benefit of cleaning up the VersionUtilsTests
because they no longer rely on different sets of versions to check
against, which was also a bug.
Currently if a yaml test has a teardown and a test is failing then
a stash dump of a request in the teardown is logged instead of
a stash dump of a request in the test itself.
By handling the logging of stash dumps separately for setup, tests and
teardown yaml sections we shouldn't miss the stash dump of request/response
that is actually causing the yaml test to fail.
The is a follow up to #28567 changing the method used to capture stack traces, as requested
during the review. Instead of creating a throwable, we explicitly capture the stack trace of the
current thread. This should Make Jason Happy Again ™️ .
Generalizing BWC building so that there is less code to modify for a release. This ensures we do not
need to think about what major or minor version is in the gradle code. It follows the general rules of the
elastic release structure. For more information on the rules, see the VersionCollection's javadoc.
This also removes the additional bwc snapshots that will never be released, such as 6.0.2, which were
being built and tested against every time we ran bwc tests.
Additionally, it creates 4 new projects that correspond to the different types of snapshots that may exist
for a given version. Its possible to now run those individual tasks to work out bwc logic whereas
previously it was impossible and the entire suite of bwc tests had to be run to work out any logic
changes in the build tools' bwc project. Please note that if the project does not make sense for the
version that is current, that an error will be thrown from that individual project if an attempt is made to
run it.
This should allow for automating the version bumps as well, since it removes all the hardcoded version
logic from the configs.
Today we acquire a permit from the shard to coordinate between indexing operations, recoveries and other state transitions. When we leak an permit it's practically impossible to find who the culprit is. This PR add stack traces capturing for each permit so we can identify which part of the code is responsible for acquiring the unreleased permit. This code is only active when assertions are active.
The output is something like:
```
java.lang.AssertionError: shard [test][1] on node [node_s0] has pending operations:
--> java.lang.RuntimeException: something helpful 2
at org.elasticsearch.index.shard.IndexShardOperationPermits.acquire(IndexShardOperationPermits.java:223)
at org.elasticsearch.index.shard.IndexShard.<init>(IndexShard.java:322)
at org.elasticsearch.index.IndexService.createShard(IndexService.java:382)
at org.elasticsearch.indices.IndicesService.createShard(IndicesService.java:514)
at org.elasticsearch.indices.IndicesService.createShard(IndicesService.java:143)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.createShard(IndicesClusterStateService.java:552)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.createOrUpdateShards(IndicesClusterStateService.java:529)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.applyClusterState(IndicesClusterStateService.java:231)
at org.elasticsearch.cluster.service.ClusterApplierService.lambda$callClusterStateAppliers$6(ClusterApplierService.java:498)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at org.elasticsearch.cluster.service.ClusterApplierService.callClusterStateAppliers(ClusterApplierService.java:495)
at org.elasticsearch.cluster.service.ClusterApplierService.applyChanges(ClusterApplierService.java:482)
at org.elasticsearch.cluster.service.ClusterApplierService.runTask(ClusterApplierService.java:432)
at org.elasticsearch.cluster.service.ClusterApplierService$UpdateTask.run(ClusterApplierService.java:161)
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:566)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:244)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:207)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.base/java.lang.Thread.run(Thread.java:844)
--> java.lang.RuntimeException: something helpful
at org.elasticsearch.index.shard.IndexShardOperationPermits.acquire(IndexShardOperationPermits.java:223)
at org.elasticsearch.index.shard.IndexShard.<init>(IndexShard.java:311)
at org.elasticsearch.index.IndexService.createShard(IndexService.java:382)
at org.elasticsearch.indices.IndicesService.createShard(IndicesService.java:514)
at org.elasticsearch.indices.IndicesService.createShard(IndicesService.java:143)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.createShard(IndicesClusterStateService.java:552)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.createOrUpdateShards(IndicesClusterStateService.java:529)
at org.elasticsearch.indices.cluster.IndicesClusterStateService.applyClusterState(IndicesClusterStateService.java:231)
at org.elasticsearch.cluster.service.ClusterApplierService.lambda$callClusterStateAppliers$6(ClusterApplierService.java:498)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at org.elasticsearch.cluster.service.ClusterApplierService.callClusterStateAppliers(ClusterApplierService.java:495)
at org.elasticsearch.cluster.service.ClusterApplierService.applyChanges(ClusterApplierService.java:482)
at org.elasticsearch.cluster.service.ClusterApplierService.runTask(ClusterApplierService.java:432)
at org.elasticsearch.cluster.service.ClusterApplierService$UpdateTask.run(ClusterApplierService.java:161)
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:566)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:244)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:207)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.base/java.lang.Thread.run(Thread.java:844)
```
This commit modifies the transport stats with exception test to remove
the requirement that we calculate the published address size when
comparing bytes received. This is tricky and is currently broken as we
also place the address string in the transport exception, however we do
not adjust the bytes for that.
The solution in this commit is to just serialize the transport exception
in the test and use that for the calculation.
* Move to non-deprecated XContentHelper.createParser(...)
This moves away from one of the now-deprecated XContentHelper.createParser
methods in favor of specifying the deprecation logger at parser creation time.
Relates to #28449
Note that this doesn't move all the `createParser` calls because some of them
use the already-deprecated method that doesn't specify the XContentType.
* Remove the deprecated (and now non-needed) createParser method
This commit switches all the modules and server test code to use the
non-deprecated `ParseField.match` method, passing in the parser's deprecation
handler or the logging deprecation handler when a parser is not available (like
in tests).
Relates to #28449
The primary currently replicates writes to all other shard copies as soon as they're added to the routing table. Initially those shards are not even ready yet to receive these replication requests, for example when undergoing a file-based peer recovery. Based on the specific stage that the shard copies are in, they will throw different kinds of exceptions when they receive the replication requests. The primary then ignores responses from shards that match certain exception types. With this mechanism it's not possible for a primary to distinguish between a situation where a replication target shard is not allocated and ready yet to receive requests and a situation where the shard was successfully allocated and active but subsequently failed.
This commit changes replication so that only initializing shards that have successfully opened their engine are used as replication targets. This removes the need to replicate requests to initializing shards that are not even ready yet to receive those requests. This saves on network bandwidth and enables features that rely on the distinction between a "not-yet-ready" shard and a failed shard.
This change adds a shallow copy method for aggregation builders. This method returns a copy of the builder replacing the factoriesBuilder and metaDada
This method is used when the builder is rewritten (AggregationBuilder#rewrite) in order to make sure that we create a new instance of the parent builder when sub aggregations are rewritten.
Relates #27782
Adds allow_partial_search_results flag to search requests with default setting = true.
When false, will error if search either timeouts, has partial errors or has missing shards rather
than returning partial search results. A cluster-level setting provides a default for search requests with no flag.
Closes#27435
This change makes sure that this function does not create field names that end with a '.', more precisely it only allows
alpha-numeric characters to compose the leaf field name.
Closes#27373
The MockUncasedHostProvider accesses nodes that are not fully built yet, where TransportService.getNode() returns null, which means that the null entries end up in the list of seedNodes that UnicastZenPing then uses.
Cluster settings shouldn't leak into the next test.
I played with failing the test if it left over any settings but that
felt like it added more ceremony then it was worth. The advantage is
that any test that intentionally wants to leave settings in place after
the test would fail and require looking at but, so far as I can tell, we
don't have any such tests.
Currently meta plugins will ask for confirmation of security policy
exceptions for each bundled plugin. This commit collects the necessary
permissions of each bundled plugin, and asks for confirmation of all of
them at the same time.
This change adds the test name to the exceptions thrown by the MockPageCacheRecycler and MockBigArrays. Also, if there is more than one page/array which are not released it will add the first one as the cause of the thrown exception and the others as suppressed exceptions.
Relates to #21315
This introduces a settings updater that allows to specify a list of
settings. Whenever one of those settings changes, the whole block of
settings is passed to the consumer.
This also fixes an issue with affix settings, when used in combination
with group settings, which could result in no found settings when used
to get a setting for a namespace.
Lastly logging has been slightly changed, so that filtered settings now
only log the setting key.
Another bug has been fixed for the mock log appender, which did not
work, when checking for the exact message.
Closes#28047
The tests for those field types were removed in #26549 because the range mapper
was moved to a module, but later this mapper was moved back to core in #27854.
This change adds back those two field types like before to the general setup in
AbstractQueryTestCase and adds some specifics to the RangeQueryBuilder and
TermsQueryBuilder tests. Also adding back an integration test in SearchQueryIT that
has been removed before but that can be kept with the mapper back in core now.
Relates to #28147
In many cases we use the `ShardOperationFailedException` interface to abstract an exception that can only be of one type, namely `DefaultShardOperationException`. There is no need to use the interface in such cases, the concrete type should be used instead. That has the additional advantage of simplifying parsing such exceptions back from rest responses for the high-level REST client
This commit is related to #27260. Currently have a channel context that
implements reading and writing logic for socket channels. Additionally,
we have exception contexts to handle exceptions. And accepting contexts
to handle accepted channels. This PR introduces a ChannelContext that
handles close and exception handling for all channel types.
Additionally, it has implementers that provide specific functionality
for socket channels (read and writing). And specific functionality for
server channels (accepting).
There a number of tests in `AbstractSimpleTransportTestCase` that
create `MockTcpTransport` impls. This commit modifies two of these tests
to use the transport implementation that is being tested.
This commit is related to #27260. Right now we have separate read and
write contexts for implementing specific protocol logic. However, some
protocols require a closer relationship between read and write
operations than is allowed by our current model. An example is HTTP
which might require a write if some problem with request parsing was
encountered.
Additionally, some protocols require close messages to be sent when a
channel is shutdown. This is also problematic in our current model,
where we assume that channels should simply be queued for close and
forgotten.
This commit transitions to a single ChannelContext which implements
all read, write, and close logic for protocols. It is the job of the
context to tell the selector when to close the channel. A channel can
still be manually queued for close with a selector. This is how server
channels are closed for now. And this route allows timeout mechanisms on
normal channel closes to be implemented.
This logging message adds considerable noise to many REST tests, if you
are using something like HTTP basic auth in every API call or set any custom
header.
The log level moves from info to debug, so can still be seen if wanted.
The composite aggregation defers the collection of sub-aggregations to a second pass that visits documents only if they
appear in the top buckets. Though the scorer for sub-aggregations is not set on this second pass and generates an NPE if any sub-aggregation
tries to access the score. This change creates a scorer for the second pass and makes sure that sub-aggs can use it safely to check the score of
the collected documents.
The method `initiateChannel` on `TcpTransport` is explicit in that
channels can be connect asynchronously. All production implementations
do connect asynchronously. Only the blocking `MockTcpTransport`
connects in a synchronous manner. This avoids testing some of the
blocking code in `TcpTransport` that waits on connections to complete.
Additionally, it requires a more extensive method signature than
required for other transports.
This commit modifies the `MockTcpTransport` to make these connections
asynchronously on a different thread. Additionally, it simplifies that
`initiateChannel` method signature.
This is related to #27933. It introduces a jar named elasticsearch-core
in the lib directory. This commit moves the JarHell class from server to
elasticsearch-core. Additionally, PathUtils and some of Loggers are
moved as JarHell depends on them.
Today a primary shard transfers the most recent commit point to a
replica shard in a file-based recovery. However, the most recent commit
may not be a "safe" commit; this causes a replica shard not having a
safe commit point until it can retain a safe commit by itself.
This commits collapses the snapshot deletion policy into the combined
deletion policy and modifies the peer recovery source to send a safe
commit.
Relates #10708
We set the watermarks to low values in other test cases to prevent test
failures on nodes with low disk space (if the disk space is too low, the
test will fail anyway but we should not prematurely fail). This commit
sets the watermarks in the single-node test cases to avoid test failures
in such situations.
Relates #28134
This commit adds the ability to package multiple plugins in a single zip.
The zip file for a meta plugin must contains the following structure:
|____elasticsearch/
| |____ <plugin1> <-- The plugin files for plugin1 (the content of the elastisearch directory)
| |____ <plugin2> <-- The plugin files for plugin2
| |____ meta-plugin-descriptor.properties <-- example contents below
The meta plugin properties descriptor is mandatory and must contain the following properties:
description: simple summary of the meta plugin.
name: the meta plugin name
The installation process installs each plugin in a sub-folder inside the meta plugin directory.
The example above would create the following structure in the plugins directory:
|_____ plugins
| |____ <name_of_the_meta_plugin>
| | |____ meta-plugin-descriptor.properties
| | |____ <plugin1>
| | |____ <plugin2>
If the sub plugins contain a config or a bin directory, they are copied in a sub folder inside the meta plugin config/bin directory.
|_____ config
| |____ <name_of_the_meta_plugin>
| | |____ <plugin1>
| | |____ <plugin2>
|_____ bin
| |____ <name_of_the_meta_plugin>
| | |____ <plugin1>
| | |____ <plugin2>
The sub-plugins are loaded at startup like normal plugins with the same restrictions; they have a separate class loader and a sub-plugin
cannot have the same name than another plugin (or a sub-plugin inside another meta plugin).
It is also not possible to remove a sub-plugin inside a meta plugin, only full removal of the meta plugin is allowed.
Closes#27316
This commit changes IndexShardSnapshotStatus so that the Stage is updated
coherently with any required information. It also provides a asCopy()
method that returns the status of a IndexShardSnapshotStatus at a given
point in time, ensuring that all information are coherent.
Closes#26480
Several responses include the shards_acknowledged flag (indicating whether the
requisite number of shard copies started before the completion of the operation)
and there are two different getters used : isShardsAcknowledged() and isShardsAcked().
This PR deprecates the isShardsAcked() in favour of isShardsAcknowledged() in
CreateIndexResponse, RolloverResponse and CreateIndexClusterStateUpdateResponse.
Closes#27784
This is related to #27260. This commit moves the NioTransport from
:test:framework to a new nio-transport plugin. Additionally, supporting
tcp decoding classes are moved to this plugin. Generic byte reading and
writing contexts are moved to the nio library.
Additionally, this commit adds a basic MockNioTransport to
:test:framework that is a TcpTransport implementation for testing that
is driven by nio.
This commit sets the elasticsearch-nio code base in the
BootstrapForTesting class. This is necessary as that codebase needs
socket permissions. Setting the codebase manually is necessary as
intellij does not package our internal libraries when running tests.
Allows TransportResponse objects not to implement Streamable anymore. As an example, I've adapted the response handler for ShardActiveResponse, allowing the fields in that class to become final.
This commit adds the infrastructure to plugin building and loading to
allow one plugin to extend another. That is, one plugin may extend
another by the "parent" plugin allowing itself to be extended through
java SPI. When all plugins extending a plugin are finished loading, the
"parent" plugin has a callback (through the ExtensiblePlugin interface)
allowing it to reload SPI.
This commit also adds an example plugin which uses as-yet implemented
extensibility (adding to the painless whitelist).
This commit disables the nio transport as an option for the test
transport in integration tests. This is because it does not currently
run properly in intellij due to socket permissions. It should be
reenabled once #27881 is merged (and the proper permissions are added).
* Adds task dependenciesInfo to BuildPlugin to generate a CSV file with dependencies information (name,version,url,license)
* Adds `ConcatFilesTask.groovy` to concatenates multiple files into one
* Adds task `:distribution:generateDependenciesReport` to concatenate `dependencies.csv` files into a single file (`es-dependencies.csv` by default)
# Examples:
$ gradle dependenciesInfo :distribution:generateDependenciesReport
## Use `csv` system property to customize the output file path
$ gradle dependenciesInfo :distribution:generateDependenciesReport -Dcsv=/tmp/elasticsearch-dependencies.csv
## When branch is not master, use `build.branch` system property to generate correct licenses URLs
$ gradle dependenciesInfo :distribution:generateDependenciesReport -Dbuild.branch=6.x -Dcsv=/tmp/elasticsearch-dependencies.csv
Today we always recover a primary from the last commit point. However
with a new deletion policy, we keep multiple commit points in the
existing store, thus we have chance to find a good starting commit
point. With a good starting commit point, we may be able to throw away
stale operations. This PR rollbacks a primary to a starting commit then
recovering from translog.
Relates #10708
This is related to #27802. This commit adds a jar called
elasticsearch-nio that contains the base nio classes that will be used
for the tcp nio transport and eventually the http nio transport.
The jar does not depend on elasticsearch:core, so all references to core
have been removed.
Today when we get a metadata snapshot directly from a store directory,
we acquire a metadata lock, then acquire an IndexWriter lock. However,
we create a CheckIndex in IndexShard without acquiring the metadata lock
first. This causes a recovery failed because the IndexWriter lock can be
still held by method snapshotStoreMetadata. This commit makes sure to
create a CheckIndex under the metadata lock.
Closes#24481Closes#27731
Relates #24787
The last operation executed in IndicesClientDocumentationIT.testCreate()
is an asynchronous index creation. Because nothing waits for its
completion, on slow machines the index can sometimes be created after
the testCreate() test is finished, and it can fail the following test.
Closes#27754
When the first parameter of `ESTestCase#randomValueOtherThan` is `null`
then run the supplier until it returns non-`null`. Previously,
`randomValueOtherThan` just ran the supplier one time which was
confusing.
Unexpectedly, it looks like not tests rely on the original `null`
handling.
Closes#27821
We currently have a complicated port assignment scheme to make sure that the nodes span off by the internal test cluster will be assigned fixed port ranges that will also not collide between clusters. The port ranges need to be fixed in advance so that the nodes will be able to find each other via `UnicastZenPing`.
This approach worked well for the last few years but we are now at a point that our testing has grown beyond it and we exceed the 5 reusable ranges per JVM. This means that nodes are not always assigned the first 5 ports in their range which causes cluster formation issues. On top of that, most of the clusters that are span up don't even rely on `UnicastZenPing` but rather `MockZenPings` that uses in memory maps for discovery (with the down side that they are not influenced by network disruption simulations).
This PR changes `InternalTestCluster` to use port 0 as a fixed assignment. This will allow the OS to manage ports and will ensure we don't have collisions. For tests that need to simulate network disruptions (and thus can't use `MockZenPings`), a new `UnicastHostProvider` is introduced that is based on the current state of the test cluster. Since that is only resolved at run time, it is aware of the port assignments of the OS.
Closes#27818Closes#27762
This commit moves GlobalCheckpointTracker from the engine to IndexShard, where it better fits logically: Tracking the global checkpoint based on the local checkpoints of all shards in the replication group is not a property of the engine, but rather a property fulfilled by the current primary shard. The LocalCheckpointTracker on the other hand is driven by the contents of the local translog. By moving GlobalCheckpointTracker to IndexShard, it makes little sense to keep the SequenceNumbersService class around - it would only wrap the LocalCheckpointTracker. This commit therefore removes the class and replaces occurrences of SequenceNumbersService in the engine directly by LocalCheckpointTracker.
AnalysisFactoryTestCase checks that the ES custom token filter multi-term
awareness matches the underlying lucene factory. For the trim filter this
won't be the case until LUCENE-8093 is released in 7.3, so we add a
temporary exclusion
Closes#27310
This commit fixes the version tests for release tests. The problem here
is that during release tests all version should be treated as released
so the assertions must be modified accordingly.
Relates #27815
When snapshotting the primary we capture a lucene commit at an arbitrary moment from a sequence number perspective. This means that it is possible that the commit misses operations and that there is a gap between the local checkpoint in the commit and the maximum sequence number.
When we restore, this will create a primary that "misses" operations and currently will mean that the sequence number system is stuck (i.e., the local checkpoint will be stuck). To fix this we should fill in gaps when we restore, in a similar fashion to normal store recovery.
Currently randomNonNegativeLong() returns 0 half as often as any positive long,
but random number generators are typically expected to return
uniformly-distributed values unless otherwise specified. This fixes this issue
by mapping Long.MIN_VALUE directly onto 0 rather than resampling.
This commit is related to #27260. It adds a base NioGroup for use in
different transports. This class creates and starts the underlying
selectors. Different protocols or transports are established by passing
the ChannelFactory to the bindServerChannel or openChannel
methods. This allows a TcpChannelFactory to be passed which will
create and register channels that support the elasticsearch tcp binary
protocol or a channel factory that will create http channels (or other).
When an ESSelector is created an underlying nio selector is opened. This
selector is closed by the event loop after close has been signalled by
another thread.
However, there is a possibility that an ESSelector is created and some
exception in the startup process prevents it from ever being started
(however, close will still be called). The allows the selector to leak.
This commit addresses this issue by having the signalling thread close
the selector if the event loop is not running when close is signalled.
Allowing `_doc` as a type will enable users to make the transition to 7.0
smoother since the index APIs will be `PUT index/_doc/id` and `POST index/_doc`.
This also moves most of the documentation to `_doc` as a type name.
Closes#27750Closes#27751
We need to keep index commits and translog operations up to the current
global checkpoint to allow us to throw away unsafe operations and
increase the operation-based recovery chance. This is achieved by a new
index deletion policy.
Relates #10708
This commit attempts to continue unifying the logic between different
transport implementations. As transports call a `TcpTransport` callback
when a new channel is accepted, there is no need to internally track
channels accepted. Instead there is a set of accepted channels in
`TcpTransport`. This set is used for metrics and shutting down channels.
This is related to #27563. This commit modifies the
InboundChannelBuffer to support releasable byte pages. These byte
pages are provided by the PageCacheRecycler. The PageCacheRecycler
must be passed to the Transport with this change.
This is a follow up to #27695. This commit adds a test checking that
across multiple writes using multiple buffers, a write operation
properly keeps track of which buffers still need to be written.
This is a followup to #27551. That commit introduced a bug where the
incorrect byte buffers would be returned when we attempted a write. This
commit fixes the logic.
This is related to #27563. In order to interface with java nio, we must
have buffers that are compatible with ByteBuffer. This commit introduces
a basic ByteBufferReference to easily allow transferring bytes off the
wire to usage in the application.
Additionally it introduces an InboundChannelBuffer. This is a buffer
that can internally expand as more space is needed. It is designed to
be integrated with a page recycler so that it can internally reuse pages.
The final piece is moving all of the index work for writing bytes to a
channel into the WriteOperation.
This commit adds a new dynamic cluster setting named `search.max_buckets` that can be used to limit the number of buckets created per shard or by the reduce phase. Each multi bucket aggregator can consume buckets during the final build of the aggregation at the shard level or during the reduce phase (final or not) in the coordinating node. When an aggregator consumes a bucket, a global count for the request is incremented and if this number is greater than the limit an exception is thrown (TooManyBuckets exception).
This change adds the ability for multi bucket aggregator to "consume" buckets in the global limit, the default is 10,000. It's an opt-in consumer so each multi-bucket aggregator must explicitly call the consumer when a bucket is added in the response.
Closes#27452#26012
Add support for filtering fields returned as part of mappings in get index, get mappings, get field mappings and field capabilities API.
Plugins can plug in their own function, which receives the index as argument, and return a predicate which controls whether each field is included or not in the returned output.
This commit adds the node name to the names of thread pool executors so
that the node name is visible in rejected execution exception messages.
Relates #27663
Today we exclude internal refreshes in the refresh stats. Yet, it's very much
confusing to not take these into account. This change includes internal refreshes
into the stats until we have a dedicated stats for this.
* Add accounting circuit breaker and track segment memory usage
This commit adds a new circuit breaker "accounting" that is used for tracking
the memory usage of non-request-tied memory users. It also adds tracking for the
amount of Lucene segment memory used by a shard as a user of the new circuit
breaker.
The Lucene segment memory is updated when the shard refreshes, and removed when
the shard relocates away from a node or is deleted. It should also be noted that
all tracking for segment memory uses `addWithoutBreaking` so as not to fail the
shard if a limit is reached.
The `accounting` breaker has a default limit of 100% and will contribute to the
parent breaker limit.
Resolves#27044
This potential issue was exposed when I saw this PR #27542. Essentially
we currently execute the write listeners all over the place without
consistently catching and handling exceptions. Some of these exceptions
will be logged in different ways (including as low as `debug`).
This commit adds a single location where these listeners are executed.
If the listener throws an execption, the exception is caught and logged
at the `warn` level.
Pull request #20220 added a change where the store files
that have the same name but are different from the ones in the
snapshot are deleted first before the snapshot is restored.
This logic was based on the `Store.RecoveryDiff.different`
set of files which works by computing a diff between an
existing store and a snapshot.
This works well when the files on the filesystem form valid
shard store, ie there's a `segments` file and store files
are not corrupted. Otherwise, the existing store's snapshot
metadata cannot be read (using Store#snapshotStoreMetadata())
and an exception is thrown
(CorruptIndexException, IndexFormatTooOldException etc) which
is later caught as the begining of the restore process
(see RestoreContext#restore()) and is translated into
an empty store metadata (Store.MetadataSnapshot.EMPTY).
This will make the deletion of different files introduced
in #20220 useless as the set of files will always be empty
even when store files exist on the filesystem. And if some
files are present within the store directory, then restoring
a snapshot with files with same names will fail with a
FileAlreadyExistException.
This is part of the #26865 issue.
There are various cases were some files could exist in the
store directory before a snapshot is restored. One that
Igor identified is a restore attempt that failed on a node
and only first files were restored, then the shard is allocated
again to the same node and the restore starts again (but fails
because of existing files). Another one is when some files
of a closed index are corrupted / deleted and the index is
restored.
This commit adds a test that uses the infrastructure provided
by IndexShardTestCase in order to test that restoring a shard
succeed even when files with same names exist on filesystem.
Related to #26865
This is related to #27260. Currently, basic nio constructs (nio
channels, the channel factories, selector event handlers, etc) implement
logic that is specific to the tcp transport. For example, NioChannel
implements the TcpChannel interface. These nio constructs at some point
will also need to support other protocols (ex: http).
This commit separates the TcpTransport logic from the nio building
blocks.
This change removes the module named aggs-composite and adds the `composite` aggs
as a core aggregation. This allows other plugins to use this new aggregation
and simplifies the integration in the HL rest client.
This is related to #27260. Currently every nio channel has a profile
field. Profile is a concept that only relates to the tcp transport. Http
channels will not have profiles. This commit moves the profile from the
nio channel to the read context. The context is the level that protocol
specific features and logic should live.
Currently we use ActionListener<TcpChannel> for connect, close, and send
message listeners in TcpTransport. However, all of the listeners have to
capture a reference to a channel in the case of the exception api being
called. This commit changes these listeners to be type <Void> as passing
the channel to onResponse is not necessary. Additionally, this change
makes it easier to integrate with low level transports (which use
different implementations of TcpChannel).
This commit removes the ability to use ${prompt.secret} and
${prompt.text} as valid config settings. Secure settings has obsoleted
the need for this, and it cleans up some of the code in Bootstrap.
Projects the depend on the CLI currently depend on core. This should not
always be the case. The EnvironmentAwareCommand will remain in :core,
but the rest of the CLI components have been moved into their own
subproject of :core, :core:cli.
Nik Everett
Nhat Nguyen
Lee Hinman
Tanguy Leroux
Julie Tibshirani
Jason Tedor
Tim Brooks
Yannick Welsch
Christoph Büscher
Boaz Leskes
Jim Ferenczi
Ryan Ernst
Martijn van Groningen
Vladimir Dolzhenko
David Turner
Colin Goodheart-Smithe
Luca Cavanna
Adrien Grand
Zachary Tong
Van0SS
Jay Modi
Stéphane Campinas
olcbean
Simon Willnauer
tomcallahan
Mayya Sharipova
Andy Bristol
Yu
Michael Basnight
markharwood
Alexander Reelsen
kel
Igor Motov
Maxime Gréau
Alan Woodward
Daniel Mitterdorfer
Christoph Büscher
Lee Hinman