Today all search phases are inner classes of AbstractSearchAsyncAction or one of it's
subclasses. This makes unit testing of these classes practically impossible. This commit
Extracts `DfsQueryPhase` and `FetchSearchPhase` or of the code that composes the actual
query execution types and moves most of the fan-out and collect code into an `InitialSearchPhase`
class that can be used to build initial search phases (phases that retry on shards). This will
make modification to these classes simpler and allows to easily compose or add new search phases
down the road if additional roundtrips are required.
When Netty decodes a bad HTTP request, it marks the decoder result on
the HTTP request as a failure, and reroutes the request to GET
/bad-request. This either leads to puzzling responses when a bad request
is sent to Elasticsearch (if an index named "bad-request" does not exist
then it produces an index not found exception and otherwise responds
with the index settings for the index named "bad-request"). This commit
addresses this by inspecting the decoder result on the HTTP request and
dispatching the request to a bad request handler preserving the initial
cause of the bad request and providing an error message to the client.
Relates #23153
This commit adds a new method to the TransportChannel that provides access to the version of the
remote node that the response is being sent on and that the request came from. This is helpful
for serialization of data attached as headers.
* Fix total disk bytes returning negative value
This adds a workaround for JDK-8162520 -
https://bugs.openjdk.java.net/browse/JDK-8162520
Some filesystems can be so large that they return a negative value for their
free/used/available disk bytes due to being larger than `Long.MAX_VALUE`.
This adds protection for our `FsProbe` implementation and adds a test that it
does the right thing.
Today when trying to encode the location header to ASCII, we rely on the
Java URI API. This API requires a proper URI which blows up whenever the
URI contains, for example, a space (which can happen if the type, ID, or
routing contain a space). This commit addresses this issue by properly
encoding the URI. Additionally, we remove the need to create a URI
simplifying the code flow.
Relates #23133
This commit changes the RefreshPolicy enum so that string representation are exposed. This will help the high level rest client to simply use refreshPolicy.getValue() to get the corresponding parameter value of a given refresh policy.
#21817 introduced the notion of a cluster state applier and banned those for sampling the cluster state directly (as it is not applied yet). Testing has exposed one exceptional use case - if the appliers want to spawn off a follow up it may require waiting for specific new cluster state (for example, the shard started action, called by the IndicesClusterStateService, may run into trouble connecting to the master and wait for a new master to be elected). This requires creating an observer which, in turn, samples the cluster state.
An example failure can be seen at https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+periodic/1701/console
This commit allows creating an observer from a cluster state applier. The observer is adapted to exclude any potential old cluster state in its logic.
Template HEAD requests incorrectly return a content-length header of
0. This commit addresses this by removing the special handling for
template HEAD requests, and just relying on the general mechanism that
exists for handling HEAD requests in the REST layer.
Relates #23130
GraphQueries are now generated as simple clauses in BooleanQuery. So for instance a multi terms synonym will generate
a GraphQuery but only for the side paths, the other part of the query will not be impacted. This means that we cannot apply
`minimum_should_match` or `cutoff_frequency` on GraphQuery anymore (only ES 5.3 does that because we generate all possible paths if a query has at least one multi terms synonym).
Starting in 5.4 multi terms synonym will now be treated as a single term when `minimum_should_match` is computed and will be ignored when `cutoff_frequency` is set.
Fixes#23102
Limits the length of `IndexRequest#toString` which also limits the size of the task description generated for `IndexRequest`s. If the document being written is larger than 2kb we skip logging the _source entirely. This is because truncating the source is tricky and it isn't worth it.
Index HEAD requests incorrectly return a content-length header of
0. This commit addresses this by removing the special handling for index
HEAD requests, and just relying on the general mechanism that exists for
handling HEAD requests in the REST layer.
Relates #23112
Alias HEAD requests incorrectly return a content-length header of
0. This commit addresses this by removing the special handling for alias
HEAD requests, and just relying on the general mechanism that exists for
handling HEAD requests in the REST layer.
Relates #23094
This commit adds methods to the BulkProcessor that accept bytes and a XContentType to avoid content type detection. The
methods that do not accept XContentType with bytes have been deprecated by this commit.
Relates #22691
This commit is just a code cleanup of RestGetAliasesAction.java. For
example, we remove an unnecessary class, simplify a convenience method,
and simplify some code flow.
Relates #23095
This pull request reuses the typed_keys parameter added in #22965, but this time it applies it to suggesters. When set to true, the suggester names in the search response will be prefixed with a prefix that reflects their type.
EvillPeerRecoveryIT checks scenario where recovery is happening while there are on going indexing operation that already have been assigned a seq# . This is fairly hard to achieve and the test goes through a couple of hoops via the plugin infra to achieve that. This PR extends the unit tests infra to allow for those hoops to happen in unit tests. This allows the test to be moved to RecoveryDuringReplicationTests
Relates to #22484
This changes removes the SearchResponseListener that was used by the ExpandCollapseSearchResponseListener to expand collapsed hits.
The removal of SearchResponseListener is not a breaking change because it was never released.
This change also replace the blocking call in ExpandCollapseSearchResponseListener by a single asynchronous multi search request. The parallelism of the expand request can be set via CollapseBuilder#max_concurrent_group_searches
Closes#23048
Now that we use bulk for single item indexing, this is often the case. Having an indicator of the id of the indexed document helps debugging.
It now looks like this `BulkShardRequest to [[test][0]] containing [index {[test][type][AVojzy9ZxfWASZ-ysmN7], source[{"auto":true}]}]`
Empty response bodies should only be sent for HEAD requests, otherwise we should always send back info about the exception that was thrown. Removed some manual exception handling in the REST action that should be rather bubbled up and handled by our rest action infra like every other rest action does.
This pull request adds a new parameter to the REST Search API named `typed_keys`. When set to true, the aggregation names in the search response will be prefixed with a prefix that reflects the internal type of the aggregation.
Here is a simple example:
```
GET /_search?typed_keys
{
"aggs": {
"tweets_per_user": {
"terms": {
"field": "user"
}
}
},
"size": 0
}
```
And the response:
```
{
"aggs": {
"sterms:tweets_per_user": {
...
}
}
}
```
This parameter is intended to make life easier for REST clients that could parse back the prefix and could detect the type of the aggregation to parse. It could also be implemented for suggesters.
Today we account for too many response with an `IllegalStateException` in
`AbstractSearchAsyncAction` while this is something that should never happen
we should rather assert that we are always have less or equal the number of
expected ops when waiting for responses.
This commit removes support for the `application/x-ldjson` Content-Type header as this was only used in the first draft
of the spec and had very little uptake. Additionally, the docs for bulk and msearch have been updated to specifically
call out ndjson and mention that the newline character may be preceded by a carriage return.
Finally, the bulk request handling of the carriage return has been improved to remove this character from the source.
Closes#23025
This is just a temporary fix until #23048 is fixed. FieldCollapsing
is executing blocking calls on a network thread which causes potential deadlocks
and trips assertions.
Relates to #23048
We have a bunch of interfaces that have only a single implementation
for 6 years now. These interfaces are pretty useless from a SW development
perspective and only add unnecessary abstractions. They also require
lots of casting in many places where we expect that there is only one
concrete implementation. This change removes the interfaces, makes
all of the classes final and removes the duplicate `foo` `getFoo` accessors
in favor of `getFoo` from these classes.
After the first cluster state from a new master is processed, NodeConnectionService guarantees we connect to the new master. This removes the need to explicitly connect to the master in the MasterFaultDetection code making it simpler and bypasses the assertion triggered due to the blocking operation on the cluster state thread.
Relates to #22828
Today we carry on all search results including aggs, suggest and profile results
until we have successfully fetched all hits for the search request. This can potentially
hold on to a large amount of memory if there are heavy aggregations involved. With
this change aggs and profiles are entirely consumed an released for GC before the fetch
phase is executing. This is a first step towards reducing results on-the-fly if the number
of non-empty response are large.
Elasticsearch v5.0.0 uses allocation IDs to safely allocate primary shards whereas prior versions of ES used a version-based mode instead. Elasticsearch v5 still has support for version-based primary shard allocation as it needs to be able to load 2.x shards. ES v6 can drop the legacy support.
Since `_all` is now deprecated and cannot be set for new indices, we should also
disallow any field that has the `include_in_all` parameter set.
Resolves#22923
This is related to #22116. This commit adds calls that require
SocketPermission connect to forbidden APIs.
The following calls are now forbidden:
- java.net.URL#openStream()
- java.net.URLConnection#connect()
- java.net.URLConnection#getInputStream()
- java.net.Socket#connect(java.net.SocketAddress)
- java.net.Socket#connect(java.net.SocketAddress, int)
- java.nio.channels.SocketChannel#open(java.net.SocketAddress)
- java.nio.channels.SocketChannel#connect(java.net.SocketAddress)
#22194 gave us the ability to open low level temporary connections to remote node based on their address. With this use case out of the way, actual full blown connections should validate the node on the other side, making sure we speak to who we think we speak to. This helps in case where multiple nodes are started on the same host and a quick node restart causes them to swap addresses, which in turn can cause confusion down the road.
Commit ee84ce09d77acb59700cd27c43b17661105dfcad changed an exception
message without changing the corresponding test. This commit fixes the
related test.
This is related to #23020. There are some cases for where this method
might be called with a URL to a file inside a jar. This commit allows
this method to read URLs with a protocol of 'jar:/'.
Secure settings from the elasticsearch keystore were not yet validated.
This changed improves support in Settings so that secure settings more
seamlessly blend in with normal settings, allowing the existing settings
validation to work. Note that the setting names are still not validated
(yet) when using the elasticsearc-keystore tool.
