try to force cleanup on shutdown (#8754)

arangod/RestServer/DatabaseFeature.cpp

@@ -446,6 +446,8 @@ void DatabaseFeature::stop() {
         << ", keys: " << currentKeysCount
         << ", queries: " << currentQueriesCount;
 #endif
+    vocbase->stop();
+
     vocbase->processCollections(
         [](LogicalCollection* collection) {
           // no one else must modify the collection's status while we are in

arangod/VocBase/vocbase.cpp

@@ -698,7 +698,6 @@ int TRI_vocbase_t::dropCollectionWorker(arangodb::LogicalCollection* collection,
       unregisterCollection(collection);
 
       locker.unlock();
-
       writeLocker.unlock();
 
       TRI_ASSERT(engine != nullptr);
@@ -744,19 +743,29 @@ int TRI_vocbase_t::dropCollectionWorker(arangodb::LogicalCollection* collection,
   return TRI_ERROR_NO_ERROR;
 }
 
+/// @brief stop operations in this vocbase. must be called prior to
+/// shutdown to clean things up
+void TRI_vocbase_t::stop() {
+  try {
+    // stop replication
+    if (_replicationApplier != nullptr) {
+      _replicationApplier->stopAndJoin();
+    }
+
+    // mark all cursors as deleted so underlying collections can be freed soon
+    _cursorRepository->garbageCollect(true);
+
+    // mark all collection keys as deleted so underlying collections can be freed
+    // soon
+    _collectionKeys->garbageCollect(true);
+  } catch (...) {
+    // we are calling this on shutdown, and always want to go on from here
+  }
+}
+
 /// @brief closes a database and all collections
 void TRI_vocbase_t::shutdown() {
-  // stop replication
-  if (_replicationApplier != nullptr) {
-    _replicationApplier->stopAndJoin();
-  }
-
-  // mark all cursors as deleted so underlying collections can be freed soon
-  _cursorRepository->garbageCollect(true);
-
-  // mark all collection keys as deleted so underlying collections can be freed
-  // soon
-  _collectionKeys->garbageCollect(true);
+  this->stop();
 
   std::vector<std::shared_ptr<arangodb::LogicalCollection>> collections;
 
@@ -1528,7 +1537,7 @@ std::shared_ptr<arangodb::LogicalView> TRI_vocbase_t::createView(arangodb::veloc
 
     if (!res.ok()) {
       unregisterView(*view);
-      THROW_ARANGO_EXCEPTION_MESSAGE(res.errorNumber(), res.errorMessage());
+      THROW_ARANGO_EXCEPTION(res);
     }
   } catch (...) {
     unregisterView(*view);

arangod/VocBase/vocbase.h

@@ -241,6 +241,10 @@ struct TRI_vocbase_t {
   /// @brief returns whether the database is the system database
   bool isSystem() const { return name() == TRI_VOC_SYSTEM_DATABASE; }
 
+  /// @brief stop operations in this vocbase. must be called prior to
+  /// shutdown to clean things up
+  void stop();
+
   /// @brief closes a database and all collections
   void shutdown();
 

js/server/arango-dfdb.js

@@ -47,7 +47,7 @@ function UnloadCollection (collection) {
     if (++tries >= 20) {
       break;
     }
-    if (tries == 1) {
+    if (tries === 1) {
       printf("Trying to unload collection '%s', current status: %s\n", collection.name(), collection.status());
     }
 
@@ -465,7 +465,7 @@ function CheckCollection (collection, issues, details) {
   printf("  identifier: %s\n", collection._id);
   printf("\n");
 
-  var datafiles = collection.datafiles();
+  let datafiles = collection.datafiles();
 
   printf("Datafiles\n");
   printf("  # of journals: %d\n", datafiles.journals.length);
@@ -473,15 +473,15 @@ function CheckCollection (collection, issues, details) {
   printf("  # of datafiles: %d\n", datafiles.datafiles.length);
   printf("\n");
 
-  for (var i = 0;  i < datafiles.journals.length;  ++i) {
+  for (let i = 0;  i < datafiles.journals.length;  ++i) {
     CheckDatafile(collection, "journal", datafiles.journals[i], issues, details);
   }
 
-  for (var i = 0;  i < datafiles.datafiles.length;  ++i) {
+  for (let i = 0;  i < datafiles.datafiles.length;  ++i) {
     CheckDatafile(collection, "datafile", datafiles.datafiles[i], issues, details);
   }
 
-  for (var i = 0;  i < datafiles.compactors.length;  ++i) {
+  for (let i = 0;  i < datafiles.compactors.length;  ++i) {
     CheckDatafile(collection, "compactor", datafiles.compactors[i], issues, details);
   }
 }
@@ -524,7 +524,7 @@ function main (argv) {
     return s;
   };
 
-  if (databases.length == 0) {
+  if (databases.length === 0) {
     printf("No databases available. Exiting\n");
     return;
   }
@@ -542,12 +542,12 @@ function main (argv) {
   while (true) {
     line = console.getline();
 
-    if (line == "") {
+    if (line === "") {
       printf("Exiting. Please wait.\n");
       return;
     }
     else {
-      var l = parseInt(line);
+      let l = parseInt(line);
 
       if (l < 0 || l >= databases.length || l === null || l === undefined || isNaN(l)) {
         printf("Please select a number between 0 and %d: ", databases.length - 1);
@@ -563,7 +563,7 @@ function main (argv) {
 
 
   var collections = internal.db._collections();
-  if (collections.length == 0) {
+  if (collections.length === 0) {
     printf("No collections available. Exiting\n");
     return;
   }
@@ -587,7 +587,7 @@ function main (argv) {
   while (true) {
     line = console.getline();
 
-    if (line == "") {
+    if (line === "") {
       printf("Exiting. Please wait.\n");
       return;
     }
@@ -600,7 +600,7 @@ function main (argv) {
       break;
     }
     else {
-      var l = parseInt(line);
+      let l = parseInt(line);
 
       if (l < 0 || l >= collections.length || l === null || l === undefined || isNaN(l)) {
         printf("Please select a number between 0 and %d: ", collections.length - 1);