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
Today we use the current version which might enable features that are
not supported. We should throw an exception if this setting is not
present for any index.
Closes#8018
Since we don't use the cache, it's okay to clear it entirely if needed,
Elasticsearch maintains its own cache for compiled scripts.
Adds loader.clearCache() into a listener, the listener is called when a
script is removed from the Guava cache.
This also lowers the amount of cached scripts to 100, since 500 is
around the limit some users have run into before hitting an out of
memory error in permgem.
Fixes#7658
Today it's easy to use the wrong version when initializing DiscoveryNode
instances. This commit adds javadocs and a utility constant to
initialize DiscoveryNode instances if the the remotes node version is
unknown.
Closes#8051
Patrick Peschlow
John Michael Luy
Josh Kuhn
Son
Derek Haynes
Colin Goodheart-Smithe
Jun Ohtani
Igor Motov
Spencer
Ryan Ernst
Erik Ringsmuth
Chris Earle
Boaz Leskes
Nik Everett
Clinton Gormley
Henrik Nordvik
Lee Hinman
Simon Willnauer
David Pilato
Michael McCandless
sp836490
Jake Buob
Hang Su
Adrien Grand
Suyog Rao