Minor: replace OSingleItemSet with Collections.singleton()
Issue #2235 was fixed. Flush periodic task.
Default value of storage.diskCache.writeCacheFlushInactivityInterval was changed to 1 min.
Revert: Issue #2235 was fixed. Flush periodic task. (4099a730f813670577635bcb215ceef09af025ed)
Fix of issue #2235 was reverted.
Fixed issue #2313 about Parallel Query

I’ve also improved record parser to be much faster. With many fields
the measured improved is 6x with no parallel and 9x with parallel query!
Refactored Index Cursor
Index: small fix to allow using server-side indexes

Without the need to link them also into the client.