This adds a NoopCircuitBreaker, and then adds the settings
`indices.breaker.fielddata.type` and `indices.breaker.request.type`,
which can be set to "noop" in order to use a breaker that will never
break, and incurs no overhead during computation.
This also refactors the tests for the CircuitBreakerService to use
@Before and @After functions as well as adding settings in
ElasticsearchIntegrationTest to occasionally use NOOP breakers for all
tests.
This is functionally equivalent to before, so there should be no
user-visible impact, except I added a NOTE in the docs warning about
the interaction of pagination and rescoring.
Closes#6232Closes#7707
This patch allows to create several netty bootstrap, each of which
listening on different ports. This will potentially allow for features
to listen to different network interfaces for node-to-node or node-to-client
communication and is also the base to listen to several interfaces, so that those
can be used to speed up cluster communication in the future.
Closes#8098
This change means that buckets can now be serialised to JSON and serialized and deserialized to the transport API outside of the aggregation that contains them. This is a required change for #8110 (Reducers framework) but should make sense on it's own since object should really take care of their own serialization rather than relying on their parent object.
It is strange to provide an example with `"store" : false` when talking about possibility of enabling the field to be stored.
Broke the line in the mapping in two lines for better readability.
More verbose sentence above the mapping.
Closes#7894
cat/nodes currently does not report any details related to file descriptors. This adds the current number in use, the maximum number available as well as their ratio (percentage) to cat/nodes as hidden-by-default metrics. In addition, this also adds current heap usage (as a non-percentage of ts max) and ram usage (as a non-percerntage of its max) to allow tools to provide more granularity.
Closes#7652
Dangling indices are indexes found on disk which are not part of the cluster state. By default, we don't delete them but rather import them into the cluster state in order to not accidentally delete data and also allow for the ease of copying index data folders from one cluster to another. Currently, the import logic doesn't check for existing aliases of the same name as the imported dangling index, causing both an index and an alias with the same name.
This commit add a protection against this. Note that the index is still kept as dangling and is only deleted from disk after `gateway.local.dangling_timeout` has passed (2 hours).
We also change the log message indicating deletion of dangling indices to a `WARN` level.
Closes#8059
This commit adds checksumming for cluster and index states. It moves
from a plain XContent based on-disk format to a more structured binary
format including a header and footer as well as a CRC32 checksum for
each of these files. Since previous versions didn't write any format
identifier etc. this commit adds a file extension `.st` for states
that have header/footer and checksum.
This commit also moves over to write temporary files and moves them into
place with an atomic move operation. This commit also serializes and
deserializes the states without materilazing them into opaque memory.
Closes#7586
Though we check that internet connection is fine and that the service is available, it could happen that some services are not available.
```java
assumeTrue(isDownloadServiceWorking("search.maven.org", 80, "/"));
singlePluginInstallAndRemove("org.elasticsearch/elasticsearch-transport-thrift/2.4.0", null);
```
In that case, the first check was successful but downloading thrift plugin from maven central download services was not successful.
This is not an issue with the plugin manager itself but sometimes the test could fail.
Adding a check that actual download service in Maven central works:
```java
assumeTrue(isDownloadServiceWorking("repo1.maven.org", 443, "/maven2/org/elasticsearch/elasticsearch-transport-thrift/2.4.0/elasticsearch-transport-thrift-2.4.0.pom"));
```
If refresh was already running when the refresh_interval is
dynamically disabled (set to a non-positive value like 0, -1, etc.),
then it's possible for the refresh thread to go into while (true)
refresh() loop.
Closes#8085Closes#8087
Lee Hinman
Ryan Grimm
Michael McCandless
Alexander Reelsen
Robert Muir
Colin Goodheart-Smithe
Lukasz Dywicki
Sergii Golubev
wmx3ng
Clinton Gormley
Chris Earle
Ryan Ernst
Andrew O'Brien
Patrick Peschlow
John Michael Luy
Josh Kuhn
Son
Derek Haynes
Jun Ohtani
Igor Motov
Spencer
Erik Ringsmuth
Boaz Leskes
Nik Everett
Henrik Nordvik
Simon Willnauer
David Pilato