SERVER-60518 Best effort checks in range deleter must not leave orphans

3 files changed, 86 insertions, 93 deletions

diff --git a/src/mongo/db/s/migration_util.cpp b/src/mongo/db/s/migration_util.cpp
index f8841e5a0e2..fc74b4fbac2 100644
--- a/src/mongo/db/s/migration_util.cpp
+++ b/src/mongo/db/s/migration_util.cpp
@@ -350,7 +350,6 @@ bool deletionTaskUuidMatchesFilteringMetadataUuid(
 ExecutorFuture<void> cleanUpRange(ServiceContext* serviceContext,
                                   const std::shared_ptr<executor::ThreadPoolTaskExecutor>& executor,
                                   const RangeDeletionTask& deletionTask) {
-
     return AsyncTry([=]() mutable {
                ThreadClient tc(kRangeDeletionThreadName, serviceContext);
                {
@@ -361,33 +360,45 @@ ExecutorFuture<void> cleanUpRange(ServiceContext* serviceContext,
                auto opCtx = uniqueOpCtx.get();
                opCtx->setAlwaysInterruptAtStepDownOrUp();
 
-               AutoGetCollection autoColl(opCtx, deletionTask.getNss(), MODE_IS);
-               auto csr = CollectionShardingRuntime::get(opCtx, deletionTask.getNss());
-               // Keep the collection metadata from changing for the rest of this scope.
-               auto csrLock = CollectionShardingRuntime::CSRLock::lockShared(opCtx, csr);
-               auto optCollDescr = csr->getCurrentMetadataIfKnown();
-               uassert(
-                   ErrorCodes::RangeDeletionAbandonedBecauseCollectionWithUUIDDoesNotExist,
-                   str::stream()
-                       << "Even after forced refresh, filtering metadata for namespace in "
-                          "deletion task "
-                       << (optCollDescr
-                               ? (optCollDescr->isSharded()
-                                      ? " has UUID that does not match UUID of the deletion task"
-                                      : " is unsharded")
-                               : " is not known"),
-                   deletionTaskUuidMatchesFilteringMetadataUuid(opCtx, optCollDescr, deletionTask));
-
-               LOGV2(22026,
-                     "Submitting range deletion task",
-                     "deletionTask"_attr = redact(deletionTask.toBSON()),
-                     "migrationId"_attr = deletionTask.getId());
-
-               const auto whenToClean = deletionTask.getWhenToClean() == CleanWhenEnum::kNow
-                   ? CollectionShardingRuntime::kNow
-                   : CollectionShardingRuntime::kDelayed;
-
-               return csr->cleanUpRange(deletionTask.getRange(), deletionTask.getId(), whenToClean);
+               const NamespaceString& nss = deletionTask.getNss();
+
+               while (true) {
+                   {
+                       // Holding the locks while enqueueing the task protects against possible
+                       // concurrent cleanups of the filtering metadata, that be serialized
+                       AutoGetCollection autoColl(opCtx, nss, MODE_IS);
+                       auto csr = CollectionShardingRuntime::get(opCtx, nss);
+                       auto csrLock = CollectionShardingRuntime::CSRLock::lockShared(opCtx, csr);
+                       auto optCollDescr = csr->getCurrentMetadataIfKnown();
+
+                       if (optCollDescr) {
+                           uassert(ErrorCodes::
+                                       RangeDeletionAbandonedBecauseCollectionWithUUIDDoesNotExist,
+                                   str::stream() << "Filtering metadata for " << nss
+                                                 << (optCollDescr->isSharded()
+                                                         ? " has UUID that does not match UUID of "
+                                                           "the deletion task"
+                                                         : " is unsharded"),
+                                   deletionTaskUuidMatchesFilteringMetadataUuid(
+                                       opCtx, optCollDescr, deletionTask));
+
+                           LOGV2(22026,
+                                 "Submitting range deletion task",
+                                 "deletionTask"_attr = redact(deletionTask.toBSON()),
+                                 "migrationId"_attr = deletionTask.getId());
+
+                           const auto whenToClean =
+                               deletionTask.getWhenToClean() == CleanWhenEnum::kNow
+                               ? CollectionShardingRuntime::kNow
+                               : CollectionShardingRuntime::kDelayed;
+
+                           return csr->cleanUpRange(
+                               deletionTask.getRange(), deletionTask.getId(), whenToClean);
+                       }
+                   }
+
+                   refreshFilteringMetadataUntilSuccess(opCtx, nss);
+               }
            })
         .until([](Status status) mutable {
             // Resubmit the range for deletion on a RangeOverlapConflict error.
@@ -408,8 +419,6 @@ ExecutorFuture<void> submitRangeDeletionTask(OperationContext* opCtx,
                 stdx::lock_guard<Client> lk(*tc.get());
                 tc->setSystemOperationKillableByStepdown(lk);
             }
-            auto uniqueOpCtx = tc->makeOperationContext();
-            auto opCtx = uniqueOpCtx.get();
 
             uassert(
                 ErrorCodes::ResumableRangeDeleterDisabled,
@@ -418,36 +427,6 @@ ExecutorFuture<void> submitRangeDeletionTask(OperationContext* opCtx,
                     << " because the disableResumableRangeDeleter server parameter is set to true",
                 !disableResumableRangeDeleter.load());
 
-            // Make sure the collection metadata is up-to-date before submitting.
-            boost::optional<CollectionMetadata> optCollDescr;
-            {
-                AutoGetCollection autoColl(opCtx, deletionTask.getNss(), MODE_IS);
-                auto csr = CollectionShardingRuntime::get(opCtx, deletionTask.getNss());
-                optCollDescr = csr->getCurrentMetadataIfKnown();
-            }
-
-            if (!deletionTaskUuidMatchesFilteringMetadataUuid(opCtx, optCollDescr, deletionTask)) {
-
-                // If the collection's filtering metadata is not known, is unsharded, or its
-                // UUID does not match the UUID of the deletion task, force a filtering metadata
-                // refresh, because this node may have just stepped up and therefore may have a
-                // stale cache.
-                LOGV2(22024,
-                      "Filtering metadata for this range deletion task may be outdated; "
-                      "forcing refresh",
-                      "deletionTask"_attr = redact(deletionTask.toBSON()),
-                      "error"_attr =
-                          (optCollDescr ? (optCollDescr->isSharded()
-                                               ? "Collection has UUID that does not match "
-                                                 "UUID of the deletion task"
-                                               : "Collection is unsharded")
-                                        : "Collection's sharding state is not known"),
-                      "namespace"_attr = deletionTask.getNss(),
-                      "migrationId"_attr = deletionTask.getId());
-
-                refreshFilteringMetadataUntilSuccess(opCtx, deletionTask.getNss());
-            }
-
             return AsyncTry([=]() {
                        return cleanUpRange(serviceContext, executor, deletionTask)
                            .onError<ErrorCodes::KeyPatternShorterThanBound>([=](Status status) {
diff --git a/src/mongo/db/s/migration_util_test.cpp b/src/mongo/db/s/migration_util_test.cpp
index 6c183d32542..ff85cb6858c 100644
--- a/src/mongo/db/s/migration_util_test.cpp
+++ b/src/mongo/db/s/migration_util_test.cpp
@@ -31,11 +31,11 @@
 
 #include "mongo/client/remote_command_targeter_factory_mock.h"
 #include "mongo/client/remote_command_targeter_mock.h"
-#include "mongo/db/catalog/create_collection.h"
 #include "mongo/db/catalog_raii.h"
 #include "mongo/db/persistent_task_store.h"
 #include "mongo/db/repl/wait_for_majority_service.h"
 #include "mongo/db/s/collection_sharding_runtime.h"
+#include "mongo/db/s/collection_sharding_runtime_test.cpp"
 #include "mongo/db/s/migration_util.h"
 #include "mongo/db/s/operation_sharding_state.h"
 #include "mongo/db/s/shard_filtering_metadata_refresh.h"
@@ -343,16 +343,18 @@ TEST_F(MigrationUtilsTest, TestInvalidUUID) {
  * Fixture that uses a mocked CatalogCacheLoader and CatalogClient to allow metadata refreshes
  * without using the mock network.
  */
-class SubmitRangeDeletionTaskTest : public ShardServerTestFixture {
+class SubmitRangeDeletionTaskTest : public CollectionShardingRuntimeWithRangeDeleterTest {
 public:
     const HostAndPort kConfigHostAndPort{"dummy", 123};
-    const NamespaceString kNss{"test.foo"};
     const ShardKeyPattern kShardKeyPattern = ShardKeyPattern(BSON("_id" << 1));
     const UUID kDefaultUUID = UUID::gen();
     const OID kEpoch = OID::gen();
     const Timestamp kDefaultTimestamp = Timestamp(2, 0);
-    const DatabaseType kDefaultDatabaseType = DatabaseType(
-        kNss.db().toString(), ShardId("0"), true, DatabaseVersion(kDefaultUUID, kDefaultTimestamp));
+    const DatabaseType kDefaultDatabaseType =
+        DatabaseType(kTestNss.db().toString(),
+                     ShardId("0"),
+                     true,
+                     DatabaseVersion(kDefaultUUID, kDefaultTimestamp));
     const std::vector<ShardType> kShardList = {ShardType("0", "Host0:12345"),
                                                ShardType("1", "Host1:12345")};
 
@@ -441,7 +443,7 @@ public:
     }
 
     CollectionType makeCollectionType(UUID uuid, OID epoch, Timestamp timestamp) {
-        CollectionType coll(kNss, epoch, timestamp, Date_t::now(), uuid);
+        CollectionType coll(kTestNss, epoch, timestamp, Date_t::now(), uuid);
         coll.setKeyPattern(kShardKeyPattern.getKeyPattern());
         coll.setUnique(true);
         return coll;
@@ -481,7 +483,7 @@ public:
 TEST_F(SubmitRangeDeletionTaskTest,
        FailsAndDeletesTaskIfFilteringMetadataIsUnknownEvenAfterRefresh) {
     auto opCtx = operationContext();
-    auto deletionTask = createDeletionTask(opCtx, kNss, kDefaultUUID, 0, 10, _myShardName);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, kDefaultUUID, 0, 10, _myShardName);
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
     store.add(opCtx, deletionTask);
@@ -506,7 +508,7 @@ TEST_F(SubmitRangeDeletionTaskTest,
 TEST_F(SubmitRangeDeletionTaskTest, FailsAndDeletesTaskIfNamespaceIsUnshardedEvenAfterRefresh) {
     auto opCtx = operationContext();
 
-    auto deletionTask = createDeletionTask(opCtx, kNss, kDefaultUUID, 0, 10, _myShardName);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, kDefaultUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -534,7 +536,7 @@ TEST_F(SubmitRangeDeletionTaskTest,
        FailsAndDeletesTaskIfNamespaceIsUnshardedBeforeAndAfterRefresh) {
     auto opCtx = operationContext();
 
-    auto deletionTask = createDeletionTask(opCtx, kNss, kDefaultUUID, 0, 10, _myShardName);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, kDefaultUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -547,7 +549,7 @@ TEST_F(SubmitRangeDeletionTaskTest,
     _mockCatalogCacheLoader->setDatabaseRefreshReturnValue(kDefaultDatabaseType);
     _mockCatalogCacheLoader->setCollectionRefreshReturnValue(
         Status(ErrorCodes::NamespaceNotFound, "dummy errmsg"));
-    forceShardFilteringMetadataRefresh(opCtx, kNss);
+    forceShardFilteringMetadataRefresh(opCtx, kTestNss);
 
     auto cleanupCompleteFuture = migrationutil::submitRangeDeletionTask(opCtx, deletionTask);
 
@@ -562,8 +564,8 @@ TEST_F(SubmitRangeDeletionTaskTest,
 TEST_F(SubmitRangeDeletionTaskTest, SucceedsIfFilteringMetadataUUIDMatchesTaskUUID) {
     auto opCtx = operationContext();
 
-    auto collectionUUID = createCollectionAndGetUUID(kNss);
-    auto deletionTask = createDeletionTask(opCtx, kNss, collectionUUID, 0, 10, _myShardName);
+    auto collectionUUID = createCollectionAndGetUUID(kTestNss);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, collectionUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -578,7 +580,7 @@ TEST_F(SubmitRangeDeletionTaskTest, SucceedsIfFilteringMetadataUUIDMatchesTaskUU
     _mockCatalogCacheLoader->setChunkRefreshReturnValue(
         makeChangedChunks(ChunkVersion(1, 0, kEpoch, kDefaultTimestamp)));
     _mockCatalogClient->setCollections({coll});
-    forceShardFilteringMetadataRefresh(opCtx, kNss);
+    forceShardFilteringMetadataRefresh(opCtx, kTestNss);
 
     // The task should have been submitted successfully.
     auto cleanupCompleteFuture = migrationutil::submitRangeDeletionTask(opCtx, deletionTask);
@@ -590,8 +592,8 @@ TEST_F(
     SucceedsIfFilteringMetadataInitiallyUnknownButFilteringMetadataUUIDMatchesTaskUUIDAfterRefresh) {
     auto opCtx = operationContext();
 
-    auto collectionUUID = createCollectionAndGetUUID(kNss);
-    auto deletionTask = createDeletionTask(opCtx, kNss, collectionUUID, 0, 10, _myShardName);
+    auto collectionUUID = createCollectionAndGetUUID(kTestNss);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, collectionUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -607,6 +609,9 @@ TEST_F(
         makeChangedChunks(ChunkVersion(1, 0, kEpoch, kDefaultTimestamp)));
     _mockCatalogClient->setCollections({coll});
 
+    auto metadata = makeShardedMetadata(opCtx, collectionUUID);
+    csr().setFilteringMetadata(opCtx, metadata);
+
     // The task should have been submitted successfully.
     auto cleanupCompleteFuture = migrationutil::submitRangeDeletionTask(opCtx, deletionTask);
     cleanupCompleteFuture.get(opCtx);
@@ -621,10 +626,10 @@ TEST_F(SubmitRangeDeletionTaskTest,
     _mockCatalogCacheLoader->setDatabaseRefreshReturnValue(kDefaultDatabaseType);
     _mockCatalogCacheLoader->setCollectionRefreshReturnValue(
         Status(ErrorCodes::NamespaceNotFound, "dummy errmsg"));
-    forceShardFilteringMetadataRefresh(opCtx, kNss);
+    forceShardFilteringMetadataRefresh(opCtx, kTestNss);
 
-    auto collectionUUID = createCollectionAndGetUUID(kNss);
-    auto deletionTask = createDeletionTask(opCtx, kNss, collectionUUID, 0, 10, _myShardName);
+    auto collectionUUID = createCollectionAndGetUUID(kTestNss);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, collectionUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -639,6 +644,9 @@ TEST_F(SubmitRangeDeletionTaskTest,
         makeChangedChunks(ChunkVersion(10, 0, kEpoch, kDefaultTimestamp)));
     _mockCatalogClient->setCollections({matchingColl});
 
+    auto metadata = makeShardedMetadata(opCtx, collectionUUID);
+    csr().setFilteringMetadata(opCtx, metadata);
+
     // The task should have been submitted successfully.
     auto cleanupCompleteFuture = migrationutil::submitRangeDeletionTask(opCtx, deletionTask);
     cleanupCompleteFuture.get(opCtx);
@@ -659,10 +667,10 @@ TEST_F(SubmitRangeDeletionTaskTest,
     _mockCatalogCacheLoader->setChunkRefreshReturnValue(
         makeChangedChunks(ChunkVersion(1, 0, staleEpoch, staleTimestamp)));
     _mockCatalogClient->setCollections({staleColl});
-    forceShardFilteringMetadataRefresh(opCtx, kNss);
+    forceShardFilteringMetadataRefresh(opCtx, kTestNss);
 
-    auto collectionUUID = createCollectionAndGetUUID(kNss);
-    auto deletionTask = createDeletionTask(opCtx, kNss, collectionUUID, 0, 10, _myShardName);
+    auto collectionUUID = createCollectionAndGetUUID(kTestNss);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, collectionUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
@@ -677,6 +685,9 @@ TEST_F(SubmitRangeDeletionTaskTest,
         makeChangedChunks(ChunkVersion(10, 0, kEpoch, kDefaultTimestamp)));
     _mockCatalogClient->setCollections({matchingColl});
 
+    auto metadata = makeShardedMetadata(opCtx, collectionUUID);
+    csr().setFilteringMetadata(opCtx, metadata);
+
     // The task should have been submitted successfully.
     auto cleanupCompleteFuture = migrationutil::submitRangeDeletionTask(opCtx, deletionTask);
     cleanupCompleteFuture.get(opCtx);
@@ -686,7 +697,7 @@ TEST_F(SubmitRangeDeletionTaskTest,
        FailsAndDeletesTaskIfFilteringMetadataUUIDDifferentFromTaskUUIDEvenAfterRefresh) {
     auto opCtx = operationContext();
 
-    auto deletionTask = createDeletionTask(opCtx, kNss, kDefaultUUID, 0, 10, _myShardName);
+    auto deletionTask = createDeletionTask(opCtx, kTestNss, kDefaultUUID, 0, 10, _myShardName);
 
     PersistentTaskStore<RangeDeletionTask> store(NamespaceString::kRangeDeletionNamespace);
 
diff --git a/src/mongo/db/s/rename_collection_participant_service.cpp b/src/mongo/db/s/rename_collection_participant_service.cpp
index f93b7732ec9..568534c83cd 100644
--- a/src/mongo/db/s/rename_collection_participant_service.cpp
+++ b/src/mongo/db/s/rename_collection_participant_service.cpp
@@ -71,6 +71,15 @@ void dropCollectionLocally(OperationContext* opCtx, const NamespaceString& nss)
                 "collectionExisted"_attr = knownNss);
 }
 
+/* Clear the CollectionShardingRuntime entry for the specified namespace */
+void clearFilteringMetadata(OperationContext* opCtx, const NamespaceString& nss) {
+    UninterruptibleLockGuard noInterrupt(opCtx->lockState());
+    Lock::DBLock dbLock(opCtx, nss.db(), MODE_IX);
+    Lock::CollectionLock collLock(opCtx, nss, MODE_IX);
+    auto* csr = CollectionShardingRuntime::get(opCtx, nss);
+    csr->clearFilteringMetadata(opCtx);
+}
+
 /*
  * Rename the collection if exists locally, otherwise simply drop the target collection.
  */
@@ -256,6 +265,11 @@ SemiFuture<void> RenameParticipantInstance::run(
                 service->promoteRecoverableCriticalSectionToBlockAlsoReads(
                     opCtx, toNss(), reason, ShardingCatalogClient::kLocalWriteConcern);
 
+                // Clear the filtering metadata to safely create new range deletion tasks: the
+                // submission will serialize on the renamed collection's metadata refresh.
+                clearFilteringMetadata(opCtx, fromNss());
+                clearFilteringMetadata(opCtx, toNss());
+
                 snapshotRangeDeletionsForRename(opCtx, fromNss(), toNss());
             }))
         .then(_executePhase(
@@ -303,17 +317,6 @@ SemiFuture<void> RenameParticipantInstance::run(
                 auto opCtxHolder = cc().makeOperationContext();
                 auto* opCtx = opCtxHolder.get();
 
-                // Clear the CollectionShardingRuntime entry
-                auto clearFilteringMetadata = [&](const NamespaceString& nss) {
-                    UninterruptibleLockGuard noInterrupt(opCtx->lockState());
-                    Lock::DBLock dbLock(opCtx, nss.db(), MODE_IX);
-                    Lock::CollectionLock collLock(opCtx, nss, MODE_IX);
-                    auto* csr = CollectionShardingRuntime::get(opCtx, nss);
-                    csr->clearFilteringMetadata(opCtx);
-                };
-                clearFilteringMetadata(fromNss());
-                clearFilteringMetadata(toNss());
-
                 // Force the refresh of the catalog cache for both source and destination
                 // collections to purge outdated information.
                 //