The `_index` field is now a completely virtual field thanks
to #12027. It is no longer necessary to index the actual value
of the index name.
closes#12329
The index name was passed along through many levels of mapping parsing,
just so that it could be used for _index. However, the index name
is really metadata that should exist alongside things like type and
id in SourceToParse.
This change moves index name to SourceToParse, and eliminates it from the
DocumentMapperParser.
Fold ignored unassigned to a UnassignedShards and have simpler handling of them. Also remove the trapy way of adding an ignored unassigned shards today directly to the list, and have dedicated methods for it.
This change also removes the useless moving of unassigned shards to the end, since anyhow we first, sort those unassigned shards, and second, we now have persistent "store exceptions" that should not cause "dead letter" shard allocation.
Break it into more manageable code by separating allocation primaries and allocating replicas. Start adding basic unit tests for primary shard allocator.
Our thread pools have support for timeout on a task. To support this, a special background task is schedule to run at timeout. That background task fires and check if the main task is still in the executor queue and then cancels it if needed. Currently we schedule this background task before adding the main task to the queue. If the timeout is very small (in tests we often use numbers like 2 ms) the background task can fire before the main one is added to the queue causing the timeout to be missed.
See http://build-us-00.elastic.co/job/es_g1gc_master_metal/11780/testReport/junit/org.elasticsearch.cluster/ClusterServiceTests/testTimeoutUpdateTask/Closes#12319
On top of that:
1) A relocation target shards' allocation id is changed to include the allocation id of the source shard under relocatingId (similar to shard routing semantics)
2) The logic around state change for finalize shard relocation is simplified - one simple start the target shard (we previously had unused logic around relocating state)
Closes#12299
While the GeoJSON spec does say a polygon is represented as an array of LinearRings (where a LinearRing is defined as a 'closed' array of points), the coerce parameter provides users with flexibility to have ES automatically close polygons. This addresses situations like those integrated with twitter (where GeoJSON polygons are not closed) such that our users do not have to write extra code to close the polygon. This code change adds the optional coerce parameter to the GeoShapeFieldMapper.
closes#11131
