* allow to access last operation tick of the transaction
* modify IResearchLink to rely on last commtted tick
* get rid of writing arangosearch markers to WAL
* further implementation
* local changes in iresearch
* add recovery states
* properly handle link creation during recovery
* adjust test cases
* properly handle nested transactions
* ungreylist recovery tests
* add more recovery tests
* do not use transaction to pass recovery tick
* do not store recoveryTick in MMFilesRecoveryState
* adjust tests
* fix mmfiles
* cleanup
* add context validity check
* fix tests
* fix more tests
* ensure subscription is not being released during commit
* address review comment
* final cleanup
* fix crash
* fix tests
* address test failures
* address review comments
* address review comments
* properly set recovery tick even if no recovery happened
* issue 466.4: implement persistence of IResearchLink WAL flush marker
* address enterprise test failure
* address test failures
* treat missing collections/indexes as potentially removed
* change view asertios to match collection assertions
* convert assertions to exceptions since they are possible
* revert assertion removal since assertions are actually valid for coordinator
* address scenario where link is dropped twice
* check for data store state before returning error
* revert last change since it's not valid for MMFiles
* issue 496.5: minor API cleanup and error reportin enhancements, update iresearch to commit d69f7bd184e009da7bf0a478efd34a0c85b74291
* add workaround for shell-collection-rocksdb-noncluster.js::testSystemSpecial test failure
* fix typo
* issue 496.3: move more coordinator-related logic out of TRI_vocbase_t, rename some arangosearch view configuration parameters, remove some consolidation policies, update iresearch to revision 6fd9760d81b136f769e277ea5b8f53996ed7a1ca
* address potential deadlock between link creation and FlushThread
* remove code causing nullptr access
* add back lock around reader reopen
* revert: address potential deadlock between link creation and FlushThread
* invalidate payload for each field in FieldIterator before setting a value
* issue 496.1: switch scope of responsibility between a TRI_vocbase_t and a LogicalView in respect to view creation/deletion
* backport: address test failures
* backport: ensure arangosearch links get exported in the dump
* backport: ensure view is created during restore on the coordinator
* Updates for ArangoSearch DDL tests, IResearchView unregistration and known issues
* Add fix for internal issue 483
* Added recovery tests for views and fixed a few related bugs.
* Added more view recovery tests.
* Modified view recovery tests to add a waitForSync operation after.
* fixed usage of wrong view type
* fixed recovery of view change markers
Jan Christoph Uhde
Jan
Dan Larkin-York
Frank Celler
Andrey Abramov
Vasiliy
Andrey Abramov
Frank Celler
Simon
Dan Larkin-York
jsteemann
Max Neunhoeffer