diff options
| -rw-r--r-- | src/mongo/db/repl/oplog.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mongo/db/repl/oplog.cpp b/src/mongo/db/repl/oplog.cpp index 773f3c4da84..4e0474f9031 100644 --- a/src/mongo/db/repl/oplog.cpp +++ b/src/mongo/db/repl/oplog.cpp @@ -243,6 +243,12 @@ void createIndexForApplyOps(OperationContext* opCtx, const BSONObj& indexSpec, const NamespaceString& indexNss, IncrementOpsAppliedStatsFn incrementOpsAppliedStats) { + // Since 'createIndexes' is a 'c' oplog entry, it takes the Global X lock. However, we don't + // want index build to block FTDC thread which periodically gathers data with Global IS lock. + // Put this hack to release the Global X lock and take the Global IX instead. + Lock::TempRelease tempRelease(opCtx->lockState()); + Lock::DBLock lock(opCtx, indexNss.db(), MODE_X); + // Check if collection exists. Database* db = dbHolder().get(opCtx, indexNss.ns()); auto indexCollection = db ? db->getCollection(opCtx, indexNss) : nullptr; |