* added check for empty scheduler
* removed log, old is 1 not 0
* require running in this thread
* test
* added isDirect to callback
* signature fixed
* added drain
* added allowDirectHandling
* disabled for testing
* Add ExecContextScope object to direct call.
* try alternate initialization of ExecContextScope
* remove ExecContextScope, no help. try _fifoSize as part of direct decision.
* strand management to minimize reuse of same strand per listen socket
* blind attempt to address Jenkins shutdown lock up. may remove quickly.
* add filename and line to existing error log message
* Adjust queueOperation() to stop accepting items once isStopping() becomes true.
* revert previous check-in to MMFilesCollectorThread.cpp
* big reformat
* fixed merge conflicts
* Add CHANGELOG entry.
* open up connect limit to allow one DNS retry
* add CHANGELOG entry for dns retry fix
* update warning message wording
* Add lock line that was missed in recent scheduler merge
* Stop libcurl from trying to POST stdin
* Stop relocking every iteration in wait
* Remove unimplemented function
* Restrict setting of empty POSTFIELDS to POST requests
* Revert locking change
* enable the ability to push results processing to threads
* have ClusterComm push libcurl response processing to Scheduler threads
* tuning changes from Matthew and Michael
* give new defaults to minimum thread count
* create multiple ClusterCommThreads, each with own Communicator object
* put PR notes in change log
* correct speling
* Also drain V8 queue.
* Add prio V8 to switch in canPostDirectly.
* Accept --server.minimal-threads even if maximal threads is not set.
* Reactivate stopping of threads.
* untested connection count management code.
* add digit to identify location of identical error messages.
* unit tests created, code working and integrated
* subtle changes to smoothing algorithm, close ... but still not perfect
* use scheduler queue() instead of post() to avoid occassional extreme latencies. throughput improved!
* temporary hack to hardcode queue size much lower
* force direct calls to post() to instead route through queue()
* correct issue with previous check-in, but performance has dropped with this on
* revert hardcoded value in SchedulerFeature.cpp
* queue to high priority to be consistent with other Aql actions
* backout all edits to Scheduler.cpp and Scheduler.h
* oops, forgot to remove some testing code.
* 3.4 merge/update
* add changelog entry
* Take out 503 timeouts altogether.
* Overhaul of AgencyComm::sendWithFailover loop.
* Let performRequests optionally ignore 404 coll not found.
* Fix error message "database not found" when AgencyComm failed.
* Add log entries in Agency if locks are acquired too slowly.
* Reexecute the javascript cluster sync stuff even if there was no plan/current change...So failed sync jobs can retry later...
* Cover callbacks in Communicator by lock. This fixes https://github.com/arangodb/planning/issues/370
* Put in delay in waiting for leader in agency test.
* Schmutz logging to heartbeat topic.
* Add more lock time diagnostic in agent.
* Switch on agencycomm tracing in coordinator.
Jan
Matthew Von-Maszewski
Frank Celler
Tobias Gödderz
jsteemann
Simon
Max Neunhöffer
m0ppers
Andreas Streichardt
Kaveh Vahedipour
Jan Christoph Uhde