* issue 153: ensure views are dropped in Agency when database is dropped in cluster, minor fixes
* backport: add test to ensure views are dropped when database is dropped from plan, fix some issues in ClusterInfo
* optimize primary key lookups in ArangoSearch
* fix test
* Add JS tests
* temporary comment optimizations
* Forward-port of bug-fix-3.4/mmfiles-replication-get-followers-under-lock
Fix resign order
Fixed a typo
Get followers later, add TODOs
Added a callback parameter to collection insert methods
Get followers under the lock if necessary
Extracted the replication of inserts into a separate method
Move shortcut into replicate method
Added callbacks for remove, replace and update
Added missing overrides
Extracted replication code from modifyLocal and removeLocal
Update followers under lock also during replace, update, remove
Fix changes from the last commit for update/replace
Update comments, add asserts
Remove changes for document-level locks that will be done in another PR
Unify replication
Adapt log messages to the devel ones
Move common methods from its descendants to TransactionCollection, fix Mock on the way
More IResearch test / mock fixes
Relax asserts for nested transactions
Reformat
Fix non-babies remove and modify replication
* Remove some changes introduced by the merge
* Fixed compile errors introduced by merge
* 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
* issue 485: ensure LogicalDataSource::drop() is called on vocbase drop
* add missed change
* backport: address race between make(...) and async job
* add another missed change
* backport: ensure recursive lock reports itself as locked correctly
* backport: address test failure on mmfiles
* backport: remove redundant lock already held by async task
* backport: reset reader before unlinking directory
* Decoupled IO from Scheduler.
* Fixed SSL start up bug.
* Updated messages and thread names. Fixed missing code from cherry-pick.
* Reintroduced checks for executing thread to be correct. Modifed default value for io-context depending on cores.
* Fixed memory leak caused by cyclic references.
* Actually distribute endpoints. Move handlers into function and do not copy them for each encapsulation.
* Inserted debug output.
* BUG FIXED! One has to call drain() on every queue as temporary work around.
* Added some flags and output for testing.
* More debug output!!!
* Manuel is right.
* Removed debug output.
the change in behavior crept in unintentionally due to my last
change of the index API. this PR reverts the unintended change
here so figures are only returned when explicitly requested
* Built a C++ skeleton REST handler for gharial, with fallback to the JS handler
* Moved aql::Graph to graph::Graph
* Added complete edge definitions to Graph
Also:
- some cleanup
- used forward-declarations in headers
- use Graph in graph rest handler
* Handle graph lookup failures according to the test suite
* Added GET vertex
* Bugfixes in ResultT
- Added missing #include
- Fixed move semantics
* Move central code of readVertex to GraphOperations
* ResultT fixes and complements
* Implemented a graph cache
* Added and used graph cache to the rest handler
* Added GET edge
* Added DELETE edge
* Extracted some code
* Added PATCH and PUT for both edge and vertex
* Moved update/replace transaction code to GraphOperations
* Added stub routes for POST and a TODO note
* Added a test checking that deleting a vertex removes all incident edges as well
* Added a test checking that deleting a vertex does not remove edges in non-graph collections
* fixed compiler warnings and errors
* Began work on DELETE vertex
For this, added a V8Context to allow for AQL queries to use subtransactions
* Continued work on DELETE vertex (still WIP)
* prep for graph post routes
* fixed removeVertex operation (aql)
* added post vertex and post edge gharial routes
* wasSynchronoues flag changed
* gharial post c++ handler, naming conventions
* added gharial tests
* temporary disabled cache (because not completed), added graph property read functions
* added c++ gharial list vertex collections
* added c++ gharial graph config
* added c++ gharial list graphs
* added graph manager class
* first implementation of create graph in c++, WIP
* changed error messages
* added etag to create graph api, still multiple edge definition check missing
* finished POST /_api/gharial/<graph>
* WIP - DELETE /_api/gharial/<graphName>
* added DELETE /_api/gharial/<graphName> validation, still missing correct response
* gharial delete
* fixed delete gharial lock
* finished DELETE /_api/gharial/<graphName>
* added routes for graph based vertices and edge definitions
* improved delete route
* added add new edge definition to existing graph
* patch edge definition in a graph, still <WIP>
* finished edit edge definition route
* code changes due to devel code changes
* added remove edge definition route
* added vertex delete function
* added todo note regarding one drop collection issue
* add oprhan collection to graph route implemented
* Added a test
* Updated a comment
* Several minor changes
* Minor changes during review
* Changes during review
* Changes during review
* Bugfix: orphans may be null or omitted
* Bugfix: resolve externals
* minor code changes
* seperated graph class to independent component classes
* seperated graph class to independent component classes
* removed log output
* fixed create collection behaviour in a cluster environment
* fixed enterprise graphs behaviour in c++ gharial api
* removed log output
* formatting
* improved error handling, fixed a linux compile bug
* more result refactoring
* more result type cleanup
* fixed wrongly defined test
* result handling
* error handling
* more refactoring
* Bugfix: avoid race condition in cluster when creating collections
* updated graph documentation
* added graph related static strings
* static strings, new method to create options for gharial created collections
* Some minor cleanup
* more use of static strings
* minor code changes, review
* added missing parseint
* removed gharial foxx, added js common module, added v8 general graph module
* correct use of virtual method
* more v8, js general graph, broken state
* more v8 graph functions
* fixed editEdgeDefinition, added drop function
* fixed drop behaviour
* added _list, _exists
* added c++ rename graph collections, added v8 + graph module function
* Added a regression test
* added graph._deleteEdgeDefinition, v8, server
* more v8g
* added _removeVertexCollection
* added _extendEditDefinitions
* todo, need to add a helper sort method for a local defined relation
* fixed test
* fixed lots of tests, added more client functions, _addVertexCollection on client module is still broken
* added more client graph functions, all tests green
* more client functions
* add del edge def route
* Fix use after move
* Minor changes in client general-graph.js module
* Make a copy before sorting (don't touch the argument)
* Minor changes and some additional asserts in graph tests
* Consistently set parameter defaults
* Renamed static strings
* Remove superfluous function
* Made comment more verbose
* Minor changes in general-graph-common.js
* Added missing template arguments
* Fixed community build
* Cleanup in editEdgeDefinition
* Regression test & bugfix: comparison of edge definitions didn' order from and to
* Fixed errors introduced by merge
* Minor changes in v8-general-graph.cpp
* Fixed test failure due to wrong error code in CE
* added missing id field
* Added permission checks for graph._create
* Removed assertion that is no longer valid
* Moved removeGraph from GraphOperations to GraphManager
* Allow C++ implementation of graph._drop to handle smart graphs
* Flush js client db cache after creating/dropping collections via the general graph module
* Added _deleteEdgeDefinition to the general graph client module
* WIP: Added permission checks for drop graph
* Fixed permission checks for drop graph
* Added permission checks for other graph operations
* Bugfix: assert edge definitions are returned in order
* Some cleanup
* Removed unused method
* Minor improvements in GraphManager
* Fixed a type in general-graph common module
* Most useful fix of all times ever: Do not auto cast from bool to int and alternate error/noerror by this
* Added the initial keyword to StaticStrings
* Added a new error code, used whenever a user tries to inject a documentcollection as a relation into the graph, which is invalid
* Some GraphManager/Ops/Graph cleanup. Less Slice parsing, more usage of GraphObjects
* Test edgeDefinitions in graphs with a defined ordering
* GraphClass Layout cleanup
* Do not test error messages, use codes instead
* Recreated backwards compatibility of Graph Creation Permission errors
* Changed error-code if edgedefinition is used twice
* Added a StaticString for the GraphName
* Renamed graphToVpack => graphForClient
* Partly fixed graph-api test to work with better error messages. Still red: The edgeDefinitions are now sorted, the test is supposed to sort his own list, but appearently does not do so. Under investigation
* Added a new error code that rejects injection of differently sharded smart collection into smartgraph. Should be more helpful to our users
* graph createCollectionOptions now require an open object to be cross-called from enterprise. Made enterprise switch for creation of graph more elegant.
* Updated graphs.cpp
* Massive refactoring. Made Factories for graphs to make SmartGraph much more transparent. Also reduced amount of multiple implementations of the same stuff. Killed vocbase/graphs use GraphManager instead. Removed usage of GraphCache, was not completely implemented anyway and only partially used, which is bad at the moment. Option for later improvement never the less
* Adapted JS code to now really use c++ variants. ALso included 3 Classes: Graph, SmartGraph and GraphModule.
* Fixed undefined behaviour in Remove Vertex. Fixed smartgraph sharding if one collection already exists.
* Removed DEBUG output
* Removed DEBUG logs
* Removed dead code
* Fixed Graph EdgeDefinition test, they now have a different ordering.
* Added a test when adding a vertexCollection that it is actually valid in the graph
* Client Graph API now correctly sends `orphanCollections` and not `orphans`
* Let GraphOperations modify the graph in-place. It should now properly handle edgeDefinitions.
* Added initial cid StaticString
* Included the vocbase in fromPersistence creation of Graphs. Only required to enhance 3.3 SmartGraphs on the fly.
* Fixed internal error message
* Fixed compiler isses originiated from merging
* Removed unused imports
* Regenerated generated file
* Added authentication tests for ArangoSearch views creation (client and task)
* Added authentication tests for ArangoSearch views querying (client and task)
* Added authentication tests for ArangoSearch views update (client and task) and correct other tests
* Added authentication tests for ArangoSearch views drop (client and task) and correct other tests
* Fix tests to support additional 'properties' layer of a view
* Add data to dumped/restored collection with a link from a view to single server test and view dump/restore to cluster tests
* backport from iresearch upstream: use a bitvector instead of an acceptor lambda for consolidation policies
* ensure view access permissions are checked for REST calls
* ensure view access permissions are checked for V8 calls
* do not allow LogicalView property modification if reading the properties fails
* Fixed authentication tests for ArangoSearch views to pass regardless of errorNum and possible multiple REST codes
* add missing ldap feature for enterprise version
* do not store useless data in ArangoSearch index (see #289, #441)
* Modified header to new initializeCursor API
* Adapted initializeCursor to DONE/WAITING API. Compiles but not tested and no one reacts to WAITING state, it is not returned anywhere yet
* Subqueries now expect a WAITING return from initilize cursor. However they will just return a nullptr and pretend the query is empty, this will be fixed later
* First attempt to simulate thread waiting over information within the query
* Small fix to allow for isDirect handlers to go to sleep.
* Waiting in the necessary places now for the async request to be send.
* Thank you auto-casting compiler, you are totally right i absolutely wanted to use this bool value as an index in may Array. How could i possibly not want to use it here?
* Include cond-var header
* Fixed mutex/cond_var usage
* Added oldAPI wrappers in AQL Blocks for get/skip some variants. This Commit compiles but is NOT tested
* Let getSome now return unique_ptr of AqlItemsBlocks. Also implemented the async variant of getSome in subqueries.
* Removed all references to OLD implementations in AQL. only the base wrappers are allowed to call OLD functions from now on. Now the testing part starts
* Fixed endless virtual recursion
* Implemented new getOrSkip API in SortBlock
* Implemented new getOrSkip API in LimitBlock
* Initilaize all variables
* Fixed logic bug in SubqueryBlock
* getBlock in ExecutionBlock now returns a state. All blocks need to handle this properly!
* Createad a wrapper getBlockOld that servers the old sync api and is used now in AQL. To be replaced overtime.
* Added IndexBlock::skipSome and IndexBlock::getSome
* getBlock now returns its old return value along with the state
* Switch from getBlockOld to getBlock in IndexBlock::skipSome
* Switch from getBlockOld to getBlock in IndexBlock::getSome
* ShortestPathBlock::skipSome is not implemented! Added a regression test
* Attempt to fix SubQueryResult memory management
* Fixed LIMIT Block
* Moved from ShortestPathBlock::getSomeOld to ::getSome
* Implemented ASYNC api on SingletonBlock
* Adapted EnumerateCollectionBlock to new async API
* Fixed FilterBlock and adapted return block to async API
* Adapted NORESULTS block to async AQL api.
* Adapted Modification Blocks to async API
* Fixed some initialize cursor functions to reset values required during get/skipSome
* First steps to adapt ClusterNodes to Async AQL api. Not there yet, need to implement the core still
* Added asnyc implementation for xxxForShard in ClusterBlocks. This commit changes internal logic of _doneForShard. Needs additional testing as soon as everything is in place.
* Adapted CalculationBlock to async API
* Adapted TraversalBlocks to ASYNC Aql. This is not optimal yet, we need a better decission if we are DONE or not on RETURN
* Adapted EnumerateListBlock to Async AQL api
* Adapted RemoteBlock to ASYNC API in getSome/skipSome. The whole thing is now LIVE in the cluster. Exetensive testing to be started now
* Fixed IndexBlock WAITING behaviour if Waiting occurs during a index processing
* Adapted IReasearchViewBlock to ASYNC AQL API
* Fixed SortingGatherBlock in WAITING state.
* Adapted IResearch ExecutionBlockMock to Async API
* Unified the HASMORE/DONE distinction. Code is much more readable now and harder to get incorrect 👍
* Implemented tonly heoretically reachable function of non void function.
* Fixed last commit
* Added inline TODO comments
* fix warning
* Fixed a clearing logic bug in RemoveNodes
* Fixed Error Handling in RemoteBlocks. Also fixed a logic bug (true/false simply has a 50% chance of getting it wrong) in Distribute and Scatter.
* remove unused methods
* Fixed failure test
* implement skipping
* Moved the Query Waiting out of the ExecutionEngine.
* changed one of the collect blocks
* Removed _upstreamState from ExecutionBlockMock, that is in the base-class now
* Added a Test Mock for a an ExecutionBlock that simulates the WAITING/HASMORE/DONE api.
* do not check "hasMore" if not necessary
* Added DistinctCollectBlock::getOrSkipSome from ~Old and changed its return type
(still uses getBlockOld)
* Save state to resume in DistinctCollectBlock::getOrSkipSome
* Extracted redundant code
* fixed some ops
* added one more test
* fix endless blocking
* fix compile error
* fix test
* Refactored HashedCollectBlock::getOrSkipSome
* Return blocks to the manager
* Replaced usage of getBlockOld in HashedCollectBlock::getOrSkipSome
* remove unused shutdown calls, simplify ownership for expressions
* Removed superfluous variable
* Capture const variable by value
* Removed SortedCollectBlock::getOrSkipSomeOld in favour of getOrSkipSome
* Added a working version of SortedCollectBlock::getOrSkipSome
Has yet to be cleaned up
* Removed isTotalAggregation special treatment
* On no input, return a group of nulls (instead of no group at all)
* Bugfixes
* Simplified code
* Move return to the end, eliminate duplicate code
* Corrected skipped count in HashedCollectBlock
* Aligned getNextRow() implementations
* Added comments
* some cleanup
* fix potential memleak
* Bugfix
* Fixed failure tests
* Removed usage of getBlockOld in ExecutionBlock::getOrSkipSome
* Replaced hasMore with an async implementation (mostly)
* Removed getBlockOld()
* Added hasMoreState to the AQL API (and renamed hasMore methods to hasMoreState)
* RemoteBlock now uses the async hasMoreState route
* remove job queue
* options
* Bugfixes in the async implementation of LimitBlock
* LimitBlock::getOrSkipSome now always skips when calculating the fullcount
* fix compile warnings
* restrict threads
* Fixed api of Waiting ExecBlockMock. Unused yet
* Made SortedGatherBlock async-capable
* Removed nonEmptyIndex hack
* Removed duplicate traceGetSome~ calls, moved all to getSome
* Added asserts before replacing getNr*Registers
* Added a TODO note and a comment
* Removed getSomeWithoutRegisterClearoutOld()
* Removed skip()
* Removed common code by using getNr*Registers()
* Use getNr*Registers() in the TraversalBlock as well
* started to add lane
* started to add lane
* added lane
* completed lane
* removed debug output
* fixed merge
* Began working on a test suite for AQL tracing/profiling
* Added more tests and asserts in aql-profiler
* Made some ExecutionBlocks final
* Added a type enum to all blocks and the per-block stats
* Add block type to stats nodes when tracing AQL on block level
* Removed initializeCursor call from instantiateFromPlan
* Avoided additional getSome calls after DONE
* Added more profiler tests
* Refactored ExecutionBlock::getOrSkipSome and fixed two bugs
- set _upstreamState also when skipping
- explicitly use xecutionBlock::getHasMoreState()
* Bugfix: update state
* Reuse parent _skipped wherever possible; rename where not (LimitBlock)
* Simplified SortedCollectBlock::getOrSkipSome and reused general pattern & code
* Implemented missing virtual function (with USE_FAILURE)
* Reset neccessary values during initializeCursor
* Simplified code in EnumerateListBlock a little
* Added a test for DistinctCollectBlock in aql-profiler
* Avoid redundant getSome calls in DistinctCollectBlock
* fix compilation
* Fixed DistinctCollectBlock profiler test
* Added a second profiler test for the DistinctCollectBlock
* Added a profiler test for EnumerateCollectionBlock
* Bugfix in EnumerateListBlock
* added --server.fifoN-size
* Simplified EnumerateCollectionBlock::getSome
* Simplified EnumerateCollectionBlock::getSome, and return HASMORE less often when DONE
* Fix testEnumerateCollectionBlock1 for mmfiles
* do not pass by reference
* Fixed compile error
* fixed merge conflicts
* Added profiler tests for EnumerateCollectionBlock
* Test fix for mmfiles
* Fixed IResearch tests
* Bugfix in DistinctCollectBlock and a regression test
* Updated comment
* Bugfix for query statistics in cluster
* Check plan in distinct test
* Fix aql-profiler tests in cluster
* Removed unused line / bugfix for single server test runs
* This commit implements waking up of AQL queries. (#5651)
* Non-compiling intermediate commit for handover.
* Make branch compile again
* Started implementation of continueable rest cursor handler by moving the callbacks to the outer part. This is not yet fully tested!
* Made finalizeExecute noexcept. We cannot react to this errors as the response was potentially written before. Also introduced continueExecution in the RestHandler engine.
* First successful query wakeup.
* The wakeup callback now posts on the scheduler directly. A resthandler only needs to provide a callback that encapsulates the continueExecution call on this handler
* renamed finalizeExecute to shutdownExecute
* Added a differentiation between Handler and Callback in Query continuation. Handler will be posted in IO service. Callback will be executed directly
* fix audit log
* Removed callback from deleteQueryCursor. This cannot be waiting
* use CONDITION_LOCKER
* removed yet another thread-local variable
* Fixed forward declaration
* Made RestAqlHandler repeatable
* Use defer to close the query in RestAqlHandler. Now waiting will close the query as well.
* Added a mutex in the RestHandlers to make sure if the callback over network is too fast that there is only one Thread running in the RestHandler
* Captured the GeneralCommTask if it is posted to a RestHandler. This is necessary in the PAUSED case
* Refactoring of _noLockHeader responsibilities. Now the BaseHandler selects them and resets them after it is done. Only Coordinators are allowed to define them if a query is loaded.
* Removed reaction to existing nolockheaders in Coordinator Query Planning Phase
* Removed incorrect assertion.
* Further refactoring of NoLockHeaders. Now there is a wrapper class around it which allows for debugging and logging. The state now seems to be better. Also all non-rest-handler triggered queries clean up the NoLockHeaders properly.
* Fixed UserManager, now deletes nolock headers properly
* Swing to the Symphony of Destruction
* Forgot about community build...
* Fixed compiling of Catch tests
* Fixed community build
* need thread for size
* Made the restSimpleHndler repeatable
* Implemented dump and dumpSync in Cursors, Sync will block a thread, dump allows to wait, only relevant for Streaming cursor
* Reactivated StreamingCursors
* Removed debug output.
* Fixed false query continuation
* Reset thread output to non-debug
* Added missing return statements
* Allow some CollectionMethods to hand-in a context that may contain a transaction. This is meant to honor nolock headers.
* Fixed hidden merge conflict
* Bugfix in aql-profiler.js: use plan.nodes order, not stats
* Added two profiler tests for filter
* Avoid too many getBlock calls in the FilterBlock
* Removed debug output
* RemoteBlock API will now send a done(bool) flag whenever we request documents from remote Servers. It is possible that we are DONE and have a result. The pre 3.4.0 API uses exhausted which is exclusive to a result. This API is still implemented for beckwards compatibility.
* Implemented an executeSync function in AqlQuery. This will block the thread until query execution is complete
* Added another test for FILTER, and one test for the HashedCollectBlock
* Added more tests for HashedCollectBlock; avoid unneccessary getSome calls
* Added an profiler IndexBlock test
* IndexBlock: avoid redundant getSome calls, added missing traceGetSomeEnd calls
* Added a second test profiling IndexBlock
* Added a third test for IndexBlock
* Moved general code to module
* Moved noncluster tests into a separate file
* Split aql-profiler testsuite into three files
* Added profiler tests for LimitBlock
* Added a test for NoResultsBlock
* Added profiler tests for TraversalBlock
* Shutdown of an AQL query is now asynchronous. However in Error-Cases it will be executed in a blocking way still
* Optimized TraversalBlock getSome calls due to new (nightly) test results
* Fixed std::min calls I broke
* Let shutdown calls in AQL wait, if the query is executed successfully.
* Fixed queryResult going out of scope
* fix compile error through merge conflict with devel
* Fixed compiler warning "mismatching tags"
* Removed debug log output
* Added TODO notes
* Fixed test fail due to devel merge
* Fixed some invalid sync waiting implementations
* Added a profiler test for SortBlock
* Added profiler tests for SortedCollectBlock
* Fixed bug introduced by devel merge
* Fixed Remoteblocks ignoring errors!
* Added some more continue Callbacks in used places. And removed debug log
* Removed debug log output
* Suppress clang warnings
* Bugfix: use of invalid stack pointer
* Bugfix: RemoteBlock::shutdown now sends code as int, not string
* Revert "Suppress clang warnings"
This reverts commit 05591649c59743c992edd5e78814edc8ca2a83e0.
* Bugfix: cleanup state in RemoteBlock ::shutdown, ::getSome and ::skipSome
* Bugfix in Subquery shutdown: don't skip subquery shutdown when main query shutdown failed
* Allow copy elision
* start implementing arangosearch cluster tests.
* backport: ensure view lookup is done via collectionNameResover, ensure updateProperties returns current view properties
* first attempt to fix failing tests
* refactor cluster wide view creation logic
* if view is not found in the new plan then check the old plan too
* ensure the cluster-wide view is looked up in vocbase as well on startup/recovery
* do not store cluster-wide IResearchView in vocbase
* move stale view cleanup to the shared pointer deleter, address test failures
* do not print warning
* enable arangosearch tests by default
* fix catch tests
* address icorrect return value for cluster-wide links
* address some issues with test failures due to cluster-view allocated within TRI_vocbase_t
* simplify per-cid view name, address 'catch' test failures
* ensure IResearchViewNode volatility is properly calculated in cluster
* invoke callbacks directly in AgencyMock instead of waiting for timeout
* ensure view updates via JavaScript always use the latest view definition
* pass a list of shards to `IResearchViewDBServer::snapshot`
* extend cluster aql tests
* fixes after merge
* fix class/struct inconsistencies
* comment failing tests
* remove debug logging
* add debug function
* tests cleanup
* simplify upcoming merge: pass resolver from a side
* backport: move all transaction status callback logic to Methods
* add changes missed from previous commit
* fix js and ruby tests
* more tests for IResearchViewNode
* pass transaction to IResearchViewDBServer::snapshot, address IResearchViewDBServer tests segfault
* pass transaction to IResearchView::snapshot instead of transaction state
* temporarily add trace log output to tests to try to find the cause of the core dump on Jenkins
* add more temporary debug output to trace down the segfault on Jenkins
* add even more temporary debug output to trace down the segfault on Jenkins
* ensure Vieew related maps are cleared during shutdown
* reset ClusterInfo::instance() before DatabaseFeature::unprepare()
* remove extraneous debug output
* missed line from previous commit
* uncomment required line
* add nullptr checks to RocksDBIndexFactory::prepareIndexes(...) similar to the ones in MMFilesIndexFactory::prepareIndexes(...)
* attempt to fix deadlock in tests
* add comment as per reviewer request
* fix aql test suite name
* add some debug logging
* address deadlock between ClusterInfo::loadPlan() and CollectionNameResolver::localNameLookup(...)
* eplicitly state which index definition failed in the log message
* use vocbase from shard-view isntead just in case
* explicitly state which index definition failed in the log message
* do not create shard-view instances from cluster-link instances (only register existing ones)
* add some tests
* integrate ArangoSearch into GatherNode/GatherBlock logic
* fix inconsistency after merge
* add serialization/deserealization logic for IResearchViewNode sorting
* fix optimizer rule order
* fix copy/past typo
* fix tests
* ensure `GatherNode` is properly set up for ArangoSearch views
* adjust optimizer rule order
* further implementation of arangosearch query distribution
* do not store `aql::Collection` in `IResearchViewNode`, use `Query::collections()` instead
* some fixes
* cleanup
* some fixes after review
* more fixes after review
* use assertion instead of condition
* issue 373.2: move toVelocyPack into LogicalDataSource
* backport: move static DataSource related strings into StaticStrings, add support for registering snapshots on DBServer views
* add initial implementation of scatter view rule and node
* add tests for `IResearchViewNode` and `IResearchViewScatterNode`
* add missing check
* modify IResearch execution nodes to use references instead of pointers
* use view id in searialized `ExecutionNode` representation instead of the name
* add cluster mode stubs and checks
* very first attempt to distribute IResearchViewNode
* further implementation of cluster-wide arangosearch views
* fix invalid json format
* add tests for coordinator iresearch view
* allow to retrieve a list of existing views on a coordinator
* more tests for coordinator iresearch view
* some fixes to enable query explanation
* remove Collection dependency from RemoteNode
* remove unnecessary remote ArangoSearch view scatter
* fix explanation appearance
* add some assertions
* minor fixes
* implement IResearchViewCoordinator::updateProperties
* fix view DDL issues
* handle link modifications in DDL operations
* add coordinator implementation of iresearch view links
* fix tests
* further coordinator based view DDL implementation
* further IResearchViewCoordinator implementation
* add initial implementation of AgencyMock
* fix some tests
* code cleanup
* extend test + some fixes
* more tests for IResearchViewCoordinator
* fix tests for IResearchLinkCoordinator
* some fixes after merge
* fix tests
* remove declaration of nonexistent (previously removed) method
* some fixes after review
* remove string duplication
* more tests and fixes
* more fixes and tests
* more tests
* one more test
* fix 'use-after-free' asan error
* fix non-enterprise tests issues