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
Fixes a bug where alias creation would allow `null` for index name, which thereby
applied the alias to _all_ indices. This patch makes the validator throw an
exception if the index is null.
```bash
POST /_aliases
{
"actions": [
{
"add": {
"alias": "empty-alias",
"index": null
}
}
]
}
```
```json
{
"error": "ActionRequestValidationException[Validation Failed: 1: Alias action [add]: [index] may not be null;]",
"status": 400
}
```
The reason this bug wasn't caught by the existing tests is because
the old test for nullness only validated against a cluster which had
zero indices. The null index is translated into "_all", and since
there are no indices, this fails because the index doesn't exist.
So the test passes.
However, as soon as you add an index, "_all" resolves and you get the
situation described in the original bug report: null index is
accepted by the alias, resolves to "_all" and gets applied to everything.
Fixes#7976
Original indices were introduced in 1.4.0.Beta1 as optional, preceded by a boolean flag that told whether they were empty or not. We have to keep serializing as optional only when reading and writing from/to 1.4.0.Beta1, although the original indices are not optional whenever we go and serialize the request they belong to (which is why the boolean got removed in 1.4.0).
This particular note was about fielddata filtering but could cause confusion
that fields that have doc values enabled cannot be used for filtering (as in
a `filtered_query`).
The scripted metric aggregation is now a PER_BUCKET aggregation so that parent buckets are evaluated independently. Also the params and reduceParams are copied for each instance of the aggregator (each parent bucket) so modifications to the values are kept only within the scope of its parent bucket
Closes#8036
* `get_upgrade` => `GET _upgrade` -- Return the status
* `upgrade` => `POST _upgrade` -- Perform the operation
Original specification part of c021f22523a69583b94c56921792b727ab4030fb.
Related: #7884, #7922
short[] were mistakenly encoded as a float[]. This is not an issue for the
text-based xcontents that we have (yaml, json) since floats can represent any
short value and are serialized as strings. However, this will make the binary
xcontents serialize shorts as int instead of floats.
Close#7845
By letting the fetch phase understand the nested docs structure we can serve nested docs as hits.
The `top_hits` aggregation can because of this commit be placed in a `nested` or `reverse_nested` aggregation.
Closes#7164
In some cases a shard search request gets created on a node to be only used there and never sent over the transport. This commit clarifies that and creates a new base class called `ShardSearchLocalRequest` that can and will be only used locally. `ShardSearchTransportRequest` on the other hand delegates to the local version but extends `TransportRequest` and is `Streamable`, which means that it is supposed to be sent over the transport.
This way we can make the `OriginalIndices` only required (and mandatory now) in the transport variant.
Took the chance to remove an unused InternalScrollSearchRequest constructor and an empty else branch in `TransportSearchScrollQueryAndFetchAction`.
Closes#7855
This patch adds to `_cat/indices` information about memory usage per index by adding memory used by FieldData, IdCache, Percolate, Segments (memory, index writer, version map).
```
% curl 'localhost:9200/_cat/indices?v&h=i,tm'
i tm
wiki 8.1gb
test 30.5kb
user 1.9mb
```
Closes#7008
* Run flush in beforeIndexShardClosed to prevent an empty shard.
* Only run check index if the shard state before closing was: started, relocated or post_recovery
