Up to now, all filters could be cached using the `_cache` flag that could be
set to `true` or `false` and the default was set depending on the type of the
`filter`. For instance, `script` filters are not cached by default while
`terms` are. For some filters, the default is more complicated and eg. date
range filters are cached unless they use `now` in a non-rounded fashion.
This commit adds a 3rd option called `auto`, which becomes the default for
all filters. So for all filters a cache wrapper will be returned, and the
decision will be made at caching time, per-segment. Here is the default logic:
- if there is already a cache entry for this filter in the current segment,
then return the cache entry.
- else if the doc id set cannot iterate (eg. script filter) then do not cache.
- else if the doc id set is already cacheable and it has been used twice or
more in the last 1000 filters then cache it.
- else if the filter is costly (eg. multi-term) and has been used twice or more
in the last 1000 filters then cache it.
- else if the doc id set is not cacheable and it has been used 5 times or more
in the last 1000 filters, then load it into a cacheable set and cache it.
- else return the uncached set.
So for instance geo-distance filters and script filters are going to use this
new default and are not going to be cached because of their iterators.
Similarly, date range filters are going to use this default all the time, but
it is very unlikely that those that use `now` in a not rounded fashion will get
reused so in practice they won't be cached.
`terms`, `range`, ... filters produce cacheable doc id sets with good iterators
so they will be cached as soon as they have been used twice.
Filters that don't produce cacheable doc id sets such as the `term` filter will
need to be used 5 times before being cached. This ensures that we don't spend
CPU iterating over all documents matching such filters unless we have good
evidence of reuse.
One last interesting point about this change is that it also applies to compound
filters. So if you keep on repeating the same `bool` filter with the same
underlying clauses, it will be cached on its own while up to now it used to
never be cached by default.
`_cache: true` has been changed to only cache on large segments, in order to not
pollute the cache since small segments should not be the bottleneck anyway.
However `_cache: false` still has the same semantics.
Close#8449
We use PlainTransportFuture as a future for our transport calls. If someone blocks on it and it is interrupted, we throw an ElasticsearchIllegalStateException. We should not set Thread.currentThread().interrupt(); in this case because we already communicate the interrupt through an exception.
Closes#9001
Add a new ignore_idle_threads boolean option (default true) to
/_nodes/hot_threads, to filter out threads in known idle places like
waiting on a socket select or on pulling the next task from an empty
queue.
Closes#8985Closes#8908
This commit makes histogram reduction a bit cleaner by expecting buckets
returned from shards to be sorted by key and merging them on-the-fly on the
coordinating node using a priority queue.
Close#8797
This commit adds support for version and version_type to the Term Vectors API.
This could be useful in the following case whereby the user gets a document
and later wants to generate its TVs. With version, this would ensure that only
the TVs of that particular document are generated, and error out if the
document has been updated in between.
Closes#7480
This commit makes histogram reduction a bit cleaner by expecting buckets
returned from shards to be sorted by key and merging them on-the-fly on the
coordinating node using a priority queue.
Close#8797
When a node tries to join a master, the master may not yet be ready to accept the join request. In such cases we retry sending the join request up to 3 times before going back to ping. To detect this the current logic uses ExceptionsHelper.unwrapCause(t) to unwrap the incoming RemoteTransportException and inspect it's source, looking for ElasticsearchIllegalStateException. However, local ElasticsearchIllegalStateException can also be thrown when the join process should be cancelled (i.e., node shut down). In this case we shouldn't retry.
This commit adds an explicit NotMasterException to indicate the remote node is not a master. A similarly named exception (but meaning something else) in the master fault detection code was given a better name. Also clean up some other exceptions while at it.
Closes#8972
This allows specifying the path an index will be at.
`index.data_path` is specified in the settings when creating an index,
and can not be dynamically changed.
An example request would look like:
POST /myindex
{
"settings": {
"number_of_shards": 2,
"data_path": "/tmp/myindex"
}
}
And would put data in /tmp/myindex/0/index/0 and /tmp/myindex/0/index/1
Since this can be used to write data to arbitrary locations on disk, it
requires enabling the `node.enable_custom_paths` setting in
elasticsearch.yml on all nodes.
This commit adds the logic necessary for supporting polygon vertex ordering per OGC standards. Exterior rings will be treated in ccw (right-handed rule) and interior rings will be treated in cw (left-handed rule). This feature change supports polygons that cross the dateline, and those that span the globe/map. The unit tests have been updated and corrected to test various situations. Greater test coverage will be provided in future commits.
Addresses #8672
This feature branch implements OGC compliance for Polygon/Multi-polygon. That is, vertex order for the exterior ring follows the right-hand rule (ccw) and all holes follow the left-hand rule (cw). While GeoJSON imposes no restrictions, a user that wants to specify a complex poly across the dateline must do so in compliance with the OGC spec, otherwise a polygon that spans the globe will be assumed.
Reference issue #8672
Fix orientation of outer and inner ring for polygon with holes. Updated unit tests. Bug exists in boundary condition on negative side of dateline.
This provides a fix to issue #7644. A new Stats object must be created, and
not a reference to the retrieved stats, before we can add stats to it.
Otherwise, we would keep on adding to the same object on subsequent calls to
IndicesStatsResponse#getPrimaries() or IndicesStatsResponse#getTotal().
Closes#7644 and #8950
The "compressed" format was removed, so this caused warnings in the log
like:
```
[WARN ][index.fielddata ] [node_0] [test] failed to find format
[compressed] for field [test-num], will use default
```
Now that we do not automatically call .cleanUp() when clearing the field
data cache, we need to call it after the cache clear in
RandomExceptionCircuitBreakerTests
We do wait for shards to be closed in IndicesService for 30 second.
Yet, if somebody holds on to a store reference ie. an open scroll request
the 30 seconds time-out and node shutdown takes very long. We should
release all other resources first before we shutdown IndicesService.
Closes#8940
The setting `mapping.date.round_ceil` (and the undocumented setting
`index.mapping.date.parse_upper_inclusive`) affect how date ranges using
`lte` are parsed. In #8556 the semantics of date rounding were
solidified, eliminating the need to have different parsing functions
whether the date is inclusive or exclusive.
This change removes these legacy settings and improves the tests
for the date math parser (now at 100% coverage!). It also removes the
unnecessary function `DateMathParser.parseTimeZone` for which
the existing `DateTimeZone.forID` handles all use cases.
Any user previously using these settings can refer to the changed
semantics and change their query accordingly. This is a breaking change
because even dates without datemath previously used the different
parsing functions depending on context.
closes#8598closes#8889
I replaced "high frequent terms" with "high frequency terms" and "low frequent terms" with "low frequency terms".
Alternatively, we could write, "highly frequent terms" and "minimally frequent terms" (or just "rare terms").
Closes#8962
In cases of heavy contention, it's possible for more than 2 threads
to race to a circuit breaking exception.
Essentially this means that if we have 3 threads all trying to add 3 and
simultaneously cause a circuit breaking exception (due to retry), when
adjusting after circuit breaking we can "rewind" past what this test
expects the child breaker to be at.
This adds leeway into the check, where it's okay to be within
NUM_THREADS from the parentLimit, because each thread should only add 1
to the breaker at a time.
We only have a single gatweway since es 1.3. There is no need to keep all
these abstractsion and nested packages. We can fold most of it into simpler
structures.
IndexEngine was an abstraction where we had index-level engines (instead
of shard-level) that could store meta information about the index. It
was never actually used by Elasticsearch, and only there for plugins.
This removes it, because it is a confusing abstraction and not needed,
no plugins should be implementing their own IndexEngines.
When a node fails (or closes), the master processes the network disconnect event and removes the node from the cluster state. If multiple nodes fail (or shut down) in rapid succession, we process the events and remove the nodes one by one. During this process, the intermediate cluster states may cause the node fault detection to signal the failure of nodes that are not yet removed from the cluster state. While this is fine, it currently causes unneeded reroutes and cluster state publishing, which can be cumbersome in big clusters.
Closes#8804Closes#8933
When we close a node all pending / active search requests need to be
cleared otherwise a node will wait up to 30 sec for shutdown sicne there
could be open scroll requests. This behavior was introduces in 1.5 such that
versions <= 1.4.x are not affected.
Closes#8940
Adrien Grand
Boaz Leskes
javanna
Michael McCandless
Alex Ksikes
Martijn Laarman
Yasir Bamarni
Pablo Díaz-López
Peter Johnson a.k.a. insertcoffee
Joao Duarte
Lee Hinman
Nicholas Knize
Simon Willnauer
Ryan Ernst
Timothy Perisho
Clinton Gormley
Robert Muir
spapin
Ayush
Simone Scarduzio