Some of our meta fields (such as _id, _version, ...) are returned as top-level
properties of the json document, while other properties (_timestamp, _routing,
...) are returned under `fields`. This commit makes all meta fields returned
as top-level properties.
So eg. `GET test/test/1?fields=_timestamp,foo` would now return
```json
{
"_index": "test",
"_type": "test",
"_id": "1",
"_version": 1,
"_timestamp": 10000000,
"found": true,
"fields": {
"foo": [ "bar" ]
}
}
```
while it used to return
```json
{
"_index": "test",
"_type": "test",
"_id": "1",
"_version": 1,
"found": true,
"fields": {
"_timestamp": 10000000,
"foo": [ "bar" ]
}
}
```
To protect ourselves against running blocking operations on a network thread we have added an assertion that triggers that verifies that the thread calling a BaseFuture.get() is not a networking one. While this assert is good, it wrongly triggers when the get() is called in order to pass it's result to a listener of AbstractListenableActionFuture who is marked to run on the same thread as the callee. At that point, we know that the operation has been completed and the get() call will not block.
To solve this, we change the assertion to ignore a get with a timeout of 0 and use that AbstractListenableActionFuture
Relates to #10402Closes#10573
feedback
In rare occasion, the translog replay phase of recovery may require mapping changes on the target shard. This can happen where indexing on the primary introduces new mappings while the recovery is in phase1. If the source node processes the new mapping from the master, allowing the indexing to proceed, before the target node does and the recovery moves to the phase 2 (translog replay) before as well, the translog operations arriving on the target node may miss the mapping changes. To protect agains this we now throw and catch an exception, so we can properly wait and retry when the next cluster state arrives.
Closes#11281Closes#11363
Clinton Gormley
gmarz
Robert Muir
Adrien Grand
Simon Willnauer
Simon Willnauer
Boaz Leskes