If the field is non-stored, non-indexed and docvalue enabled numeric field
then inplace update can be done. previously, lucene didn't support
docvalue update for field that is not yet present in indexWriter but
LUCENE-8316 added support for this.
This adds support to update field which satisfies inplace conditions
but which doesn't yet exist in any docs
group.query after execution forms QueryCommandResult. In case of
group.main=true or group.format=simple, QueryCommandResult was not
consumed in EndResultTransformer. Also, MainEndResultTransformer assumed
that always group.field would be specified. When group.field not specified
it failed with AIOOBE. After adding suppport for QueryCommandResult in
EndResultTransformers and handling AIOOBE, group.query started giving results
Working on tests exposed few other issues. Results differed b/w standalone
& distributed mode.
* One of the reason is that TopGroupShardResponseProcessor doesn't consider correct
limit and offset when group format is simple. In case of simple, start and rows should be used
as limit and offset instead of group.limit and group.offset.
* Secondly, In distributed second phase grouping, computing docsToCollect didn't consider
group response format. This issue is again similar to above issue
* offset(group.offset or start) not being considered during TopDocs#merge caused
different results. The fix was to use to offset in merge process
* group.offset doesn't support negative values but there is no checks on the value.
In case of negative values AIOOBE. Now, checks are added for negative values and
returns proper error message(this change is for both standalone and distrbuted).
Validation is done only in case of group.format=grouped as that is only case when
group.offset is consumed.
Fixing above issues resolved the differences b/w standalone and distributed mode.
* When ramPerThreadHardLimitMB is not specified, then Lucene's
default value 1945 is used. The specified value should be
greater than 0 and less than 2048MB
* Improve error message when collapsing is not supported on given
fieldtype
* Return 400 error code when unsupported value are passed for max,min
or in case of syntax error
* Inplace update supports set and inc operation but when null or
empty list is specified with set op, then it should always be treated
as atomic update since this case is equivalent to removing field
from the document
Also add Predicate<DocCollection> equivilents for callers that don't care about liveNodes.
(cherry picked from commit 5a974860fa83408a86ca64b417f3111b037da7eb)
