Commit Graph

39058 Commits

Author SHA1 Message Date
Alexander Reelsen 51418fc158
Watcher: Mark watcher as started only after loading watches (#30403)
Starting watcher should wait for the watcher to be started before
marking the status as started, which is now done via a callback.

Also, reloading watcher could set the execution service to paused. This could
lead to watches not being executed, when run in tests. This fix does not
change the paused flag in the execution service, just clears out the
current queue and executions.

Closes #30381
2018-05-08 17:47:01 +01:00
Stéphane Campinas b904c36036
Pass the task to broadcast actions (#29672)
Since the task is required as per line 292, give the opportunity to broadcast actions to handle tasks.
2018-05-08 17:47:00 +01:00
Boaz Leskes 245479fb49
Disable REST default settings testing until #29229 is back-ported
That PR changed the execution path of index settings default to be on the master
until the PR is back-ported the old master will not return default settings.
2018-05-08 17:47:00 +01:00
Stéphane Campinas 8fb798ffb8
Correct wording in log message (#30336) 2018-05-08 17:47:00 +01:00
Tanguy Leroux a836e79610
Do not fail snapshot when deleting a missing snapshotted file (#30332)
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
2018-05-08 17:47:00 +01:00
Nhat Nguyen eb51318b0f
AwaitsFix testCreateShrinkIndexToN
Relates #30416
2018-05-08 17:47:00 +01:00
Jason Tedor ec71144040 Merge branch 'master' into index-lifecycle
* master: (35 commits)
  DOCS: Correct mapping tags in put-template api
  DOCS: Fix broken link in the put index template api
  Add put index template api to high level rest client (#30400)
  Relax testAckedIndexing to allow document updating
  [Docs] Add snippets for POS stop tags default value
  Move respect accept header on no handler to 6.3.1
  Respect accept header on no handler (#30383)
  [Test] Add analysis-nori plugin to the vagrant tests
  [Docs] Fix bad link
  [Docs] Fix end of section in the korean plugin docs
  Expose the Lucene Korean analyzer module in a plugin (#30397)
  Docs: remove transport_client from CCS role example (#30263)
  [Rollup] Validate timezone in range queries (#30338)
  Use readFully() to read bytes from CipherInputStream (#28515)
  Fix  docs Recently merged #29229 had a doc bug that broke the doc build. This commit fixes.
  Test: remove cluster permission from CCS user (#30262)
  Add Get Settings API support to java high-level rest client (#29229)
  Watcher: Remove unneeded index deletion in tests
  Set the new lucene version for 6.4.0
  [ML][TEST] Clean up jobs in ModelPlotIT
  ...
2018-05-06 18:17:36 -04:00
Nhat Nguyen 3e58463256 DOCS: Correct mapping tags in put-template api
The mapping tags were not named consistently and not linked correctly.

Relates #30400
2018-05-06 15:56:49 -04:00
Nhat Nguyen a03e74dbae DOCS: Fix broken link in the put index template api
This commit fixes the broken doc introduced in #30400

Relates #30400
2018-05-06 14:43:17 -04:00
Nhat Nguyen eed8a3b585
Add put index template api to high level rest client (#30400)
Relates #27205
2018-05-06 09:47:36 -04:00
Boaz Leskes b46d01d409 Relax testAckedIndexing to allow document updating
The test indexes new documents and is thus correct in testing that the response result
is `CREATED`. Sadly we can't guarantee exactly once delivery just yet.

Relates #9967

Closes #21658
2018-05-06 13:06:16 +02:00
Jim Ferenczi d3ee35ef18 [Docs] Add snippets for POS stop tags default value
relates #30397
2018-05-05 07:53:50 +02:00
Jason Tedor 10fcf30ce1 Move respect accept header on no handler to 6.3.1
This commit moves the changelog entry for the change to respect the
accept header on no handler from the 7.0.0 section of the docs to 6.3.1.
2018-05-04 20:50:30 -04:00
Jason Tedor beee5fe004
Respect accept header on no handler (#30383)
Today when processing a request for a URL path for which we can not find
a handler we send back a plain-text response. Yet, we have the accept
header in our hand and can respect the accepted media type of the
request. This commit addresses this.
2018-05-04 18:13:50 -04:00
Jim Ferenczi 6a65b3b874 [Test] Add analysis-nori plugin to the vagrant tests
relates #30397
2018-05-04 22:46:04 +02:00
Jim Ferenczi ec187ed3be [Docs] Fix bad link
relates #30397
2018-05-04 22:07:12 +02:00
Jim Ferenczi d7c2a99347 [Docs] Fix end of section in the korean plugin docs
relates #30397
2018-05-04 21:41:50 +02:00
Jim Ferenczi 891d3bd9c3
Expose the Lucene Korean analyzer module in a plugin (#30397)
This change adds a new plugin called `analysis-nori` that exposes
Korean text analysis in es using the new Lucene Korean analyzer module named (`nori`).
The plugin adds:
* a Korean analyzer: `nori`
* a Korean tokenizer: `nori_tokenizer`
* a part of speech stop filter: `nori_part_of_speech`
* a filter that can replace Hanja characters with their Hangul transcription: `nori_readingform`
2018-05-04 20:46:13 +02:00
Jay Modi 13e2223680
Docs: remove transport_client from CCS role example (#30263)
This commit removes the unnecessary transport_client cluster permission
from the role that is used as an example in our documentation. This
permission is not needed to use cross cluster search.
2018-05-04 11:52:11 -06:00
Zachary Tong 1c0d339904
[Rollup] Validate timezone in range queries (#30338)
When validating the search request, we make sure any date_histogram
aggregations have timezones that match the jobs.  But we didn't
do any such validation on range queries.

While it wouldn't produce incorrect results, it would be confusing
to the user as no documents would match the aggregation (because we
add a filter clause on the timezone for the agg).

Now the user gets an exception up front, and some helpful text about
why the range query didnt match, and which timezones are acceptable
2018-05-04 10:45:16 -07:00
Ioannis Kakavas 21bc87a65b
Use readFully() to read bytes from CipherInputStream (#28515)
Changes how data is read from CipherInputStream

 Instead of using `read()` and checking that the bytes read are what we 
expect, use `readFully()` which will read exactly the number of bytes
while keep reading until the end of the stream or throw an
`EOFException` if not all bytes can be read.

This approach keeps the simplicity of using CipherInputStream while
working as expected with both JCE and BCFIPS Security Providers
2018-05-04 20:13:27 +03:00
Thomas Callahan d6a91eaa0a Fix docs
Recently merged #29229 had a doc bug that broke the doc build.
This commit fixes.
2018-05-04 12:35:15 -04:00
Jay Modi 2426d65dda
Test: remove cluster permission from CCS user (#30262)
This commit updates the multi cluster search test with security so that
the user that is simply performing a multi cluster search does not have
any cluster permissions. This is done as none are needed by this user
and excess privileges could mask a behavior change.
2018-05-04 10:14:09 -06:00
tomcallahan 0a93956194
Add Get Settings API support to java high-level rest client (#29229)
This PR adds support for the Get Settings API to the java high-level rest client.
Furthermore, logic related to the retrieval of default settings has been moved from the rest layer into the transport layer and now default settings may be retrieved consistency via both the rest API and the transport API.
2018-05-04 11:14:28 -04:00
Alexander Reelsen bf51a21b6c Watcher: Remove unneeded index deletion in tests
A leftover invalid TODO comment and `.watches` index deletion command
can be removed again.
2018-05-04 17:10:54 +02:00
Jim Ferenczi 719ab30c32 Set the new lucene version for 6.4.0 2018-05-04 12:15:51 +02:00
Dimitris Athanasiou 2751790aea [ML][TEST] Clean up jobs in ModelPlotIT
Closes #30377
2018-05-04 10:46:19 +01:00
Jim Ferenczi dbd857341f
Upgrade to 7.4.0-snapshot-1ed95c097b (#30357)
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)
2018-05-04 11:44:22 +02:00
Alexander Reelsen 0e6cbbd811
Watcher: Ensure trigger service pauses execution (#30363)
When the watcher service pauses execution due to a cluster state update,
the trigger service and its engines also need to pause properly instead
of keeping going. This is also important when the .watches index is 
deleted, so that watches don't stay in a triggered mode.
2018-05-04 09:02:04 +02:00
lcawley 137ce702a4 [DOCS] Added coming qualifiers in changelog 2018-05-03 19:38:19 -07:00
debadair 19624466e8
[DOCS] Commented out empty sections in the changelog to fix the doc build. (#30372) 2018-05-03 16:31:32 -07:00
Jay Modi aa0d7c73f8
Security: reduce garbage during index resolution (#30180)
The IndexAndAliasesResolver resolves the indices and aliases for each
request and also handles local and remote indices. The current
implementation uses the ResolvedIndices class to hold the resolved
indices and aliases. While evaluating the indices and aliases against
the user's permissions, the final value for ResolvedIndices is
constructed. Prior to this change, this was done by creating a
ResolvedIndices for the first set of indices and for each additional
addition, a new ResolvedIndices object is created and merged with
the existing one. With a small number of indices and aliases this does
not pose a large problem; however as the number of indices/aliases
grows more list allocations and array copies are needed resulting in a
large amount of garbage and severely impacted performance.

This change introduces a builder for ResolvedIndices that appends to
mutable lists until the final value has been constructed, which will
ultimately reduce the amount of garbage generated by this code.
2018-05-03 12:48:23 -06:00
Michael Basnight 5f8101a44c
Make RepositoriesMetaData contents unmodifiable (#30361)
This commit makes the RepositoriesMetaData backing list no longer
modifiable.

Ref #30333
2018-05-03 13:14:54 -05:00
Sue Gallagher 09a6ba4fea
Change quad tree max levels to 29. Closes #21191 (#29663)
* [DOCS] Changed quad tree max levels to 29. Clears 21191

* Changed QuadPrefixTree max levels to 29 and added defaults. Closes #21191
2018-05-03 09:48:21 -07:00
jaymode 9573492a9e
Test: use trial license in qa tests with security
QA tests that use security need to use a trial license instead of a
basic license. Basic licenses do not enable security so these tests are
not running in the expected configuration. This can also lead to issues
that seem completely unrelated such as authentication failures right
after cluster formation.

The authentication failure right after cluster formation happens since
a request makes it past the authentication license checks and the
request starts the authentication process. During authentication the
cluster forms and the license is updated to a basic license, which
disables all realms. The request that is being authenticated then tries
to iterate over the realms, but the realms are empty and the request
cannot be authenticated. This results in a authentication failure even
though the credentials provided are correct.

Closes #30306
2018-05-03 10:33:08 -06:00
Dimitris Athanasiou a1e23feba2
[ML] Add integration test for model plots (#30359)
Relates #30004
2018-05-03 17:02:45 +01:00
Costin Leau 65dbc17510
SQL: Fix bug caused by empty composites (#30343)
When dealing with filtering, a composite aggregation might return empty
buckets (which have been filtered) which gets sent as is to the client.
Unfortunately this interprets the response as no more data instead of
retrying.

This now has changed and the listener keeps retrying until either the
query has ended or data passes the filter.

Fix #30292
2018-05-03 17:13:32 +03:00
Dimitris Athanasiou 3b260dcfc1
[ML] Account for gaps in data counts after job is reopened (#30294)
This commit fixes an issue with the data diagnostics were
empty buckets are not reported even though they should. Once
a job is reopened, the diagnostics do not get initialized from
the current data counts (especially the latest record timestamp).
The result is that if the data that is sent have a time gap compared
to the previous ones, that gap is not accounted for in the empty bucket
count.

This commit fixes that by initializing the diagnostics with the current
data counts.

Closes #30080
2018-05-03 15:08:24 +01:00
Boaz Leskes ccd791b3b4
InternalEngineTests.testConcurrentOutOfOrderDocsOnReplica should use two documents (#30121)
We were recently looking at bugs that can only occur if two different documents were indexed concurrently. For example, what happens if the local checkpoint advances above the sequence number of  a document that's being indexed. That can only happen if another concurrent operation caused the checkpoint to advance. It has to be another document to allow concurrency as we acquire a per uid lock.While our investigation proved that the suspected bug doesn't exists, we still discovered our unit testing coverage is not good enough to cover this case. 

This PR extend the test concurrent out of order replica processing to use two documents in its history.
2018-05-03 14:57:48 +02:00
Michael Basnight bdd43fa69f
Change signature of Get Repositories Response (#30333)
The Get Repositories response object held a list of RepositoryMetaData
entries. This object does not have the from/toXContent methods that are
needed to expose this to the high level REST client. The
RepositoriesMetaData, however, does, and it also contains a list of
RepositoryMetaData objects within it. So rather than duplicate this
logic or move it (RepositoriesMetaData is a fragment object used by
cluster state), the object holding state in the Response was changed to
use the RepositoriesMetaData instead. This also cleans up the read/write
methods in the response, as they can now use the same read/write in
RepositoriesMetaData, which also were not present in the singular class.
2018-05-03 07:22:59 -05:00
Colin Goodheart-Smithe e9dc190479
Throws ElasticsearchException from cluster state tasks if something
really bad happens

If the `onFailure()` method is called on the cluster state task then
something bad happened that we can't really deal with so this change
throws an ElasticsearchException in that case and the step will be
re-executed when the policy is next triggered. If we can't submit a
cluster state task then we can't move to the error state so there isn't
really anything else we can do here. If the cluster state task fails
like this there are probably bigger issues witht he cluster anyway.

x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/ExecuteStepsUpdateTask.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTask.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToNextStepUpdateTask.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/ClusterStateUpdateStepTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/ExecuteStepsUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToNextStepUpdateTaskTests.java
2018-05-03 11:05:37 +01:00
Alexander Reelsen 18394540ab
Tests: Use different watch ids per test in smoke test (#30331)
Each test now has its own watch id that is being used.
This ensures there are no old history entries, which can potentially
lead to broken test assertions.
2018-05-03 11:41:06 +02:00
Colin Goodheart-Smithe 61d88a8fdd
Makes all step tests use `randomStepKey()`
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/AbstractStepTestCase.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/DeleteStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ForceMergeStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/InitializePolicyContextStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/PhaseAfterStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ReplicasAllocatedStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/RolloverStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/SegmentCountStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ShrinkSetAliasStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ShrinkStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ShrunkShardsAllocatedStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ShrunkenIndexCheckStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/TerminalPolicyStepTests.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/UpdateSettingsStepTests.java
2018-05-03 10:18:42 +01:00
Colin Goodheart-Smithe b5ae7a1aeb
Adds infrastructure for dealing with errors in step execution (#30341)
* Adds infrastructure for dealing with errors in step execution

This change adds a new ErrorStep which a step can move to if it
encounters an error it cannot automatically recover from by retrying on
the next execution. The error step is special in that it cannot
complete. The intention is that the user will need to call an API to man
ually mocve the step in order to progress the index's lifecycle. The
error step retains the phase and action names of the step before it but
with the step name set to `ERROR`. For this reason no ordinary step can
have this name. `AbstractStepTestCase.testStepNameNotError()` ensures
that no step uses `ERROR` as the step name for either its stepKey or
its nextStepKey.

The new `index.lifecycle.failed_step` setting is used
to store the name of the failed step so the user can know in which step
the error occured. More error information will be added shortly.

The async steps will now move to the error step if listener.onFailure()
is called.

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/LifecycleSettings.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/ErrorStep.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunner.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTask.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistry.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/ErrorStepTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunnerTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToNextStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistryTests.java

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStep.java
x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/LifecycleSettings.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/AbstractStepTestCase.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStepTests.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunner.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTask.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistry.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunnerTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToNextStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistryTests.java

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStep.java
x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/LifecycleSettings.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/AbstractStepTestCase.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStepTests.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunner.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTask.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistry.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunnerTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToErrorStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/MoveToNextStepUpdateTaskTests.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/PolicyStepsRegistryTests.java

* Addresses review comments
x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStep.java
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/indexlifec
ycle/ErrorStepTests.java
x-pack/plugin/index-lifecycle/src/main/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunner.java
x-pack/plugin/index-lifecycle/src/test/java/org/elasticsearch/xpack/inde
xlifecycle/IndexLifecycleRunnerTests.java
2018-05-03 09:42:54 +01:00
wmellouli c8d8407012 [Docs] Add term query with normalizer example 2018-05-03 10:23:14 +02:00
Colin Goodheart-Smithe 6546535a8b
Merge branch 'master' into index-lifecycle 2018-05-03 08:54:15 +01:00
Colin Goodheart-Smithe 09b918545d
Adds Eclipse config for xpack licence headers (#30299)
Uses a filter on the copy task for the eclipse settings files to
replace the token @@LICENSE_HEADER_TEXT@@ with the correct licence
header from the new buildSrc/src/main/resources/license-headers
directory
2018-05-03 08:48:49 +01:00
Alexander Reelsen 2c38d12e23
Watcher: Make start/stop cycle more predictable and synchronous (#30118)
The current implementation starts/stops watcher using an executor. This
can result in our of order operations.

This commit reduces those executor calls to an absolute minimum in order
to be able to do state changes within the cluster state listener method,
which runs in sequence.

When a state change occurs that forces the watcher service to pause
(like no watcher index, no master node, no local shards), the service is
now in a paused state.

Pausing is a super lightweight operation, which marks the
ExecutionService as paused and waits for the currently executing watches
to finish in the background via an executor. The same applies for
stopping, the potentially long running operation is outsourced in to an
executor, as waiting for executed watches is decoupled from the current
state.

The only other long running operation is starting, where watches need to
be loaded. This is also done via an executor, but has an additional
protection by checking the cluster state version it was started with. If
another cluster state version was trying to load the watches, then this
loading will not take effect.

This PR also cleans up some unused states, like the a simple boolean in
the HistoryStore/TriggeredWatchStore marking it as started or stopped,
as this can now be caught in the execution service.

Another advantage of this approach is the fact, that now only triggered
watches are not getting executed, while watches that are run via the
Execute Watch API will still be executed regardless if watcher is
stopped or not.

Lastly the TickerScheduleTriggerEngine thread now only starts on data nodes.
2018-05-03 09:47:12 +02:00
Andy Bristol 824e648662 [test] add debug logging for packaging test 2018-05-02 18:09:44 -07:00
lcawley b3516786ec [DOCS] Removed X-Pack Breaking Changes 2018-05-02 15:52:14 -07:00