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Type:
Bug
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Resolution: Duplicate
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Priority:
Critical - P2
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None
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Affects Version/s: None
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Component/s: Replication, Storage
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None
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Fully Compatible
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ALL
I tightened some assertions in the NamespaceIndex code for MMAP V1 and I noticed that repl log replay threads are accessing it with only DB IX lock. This has the potential for corrupting the .ns file.
Here is a call stack I am referring to:
m31101| 2014-12-11T00:07:34.462-0500 I - [repl writer worker 15] Invariant failure txn->lockState()->isDbLockedForMode(nss.db(), MODE_X) src/mongo/db/storage/mmap_v1/catalog/namespace_index.cpp 76 m31101| mongod(mongo::invariantFailed(char const*, char const*, unsigned int) 0xB2) [0xe955b2] m31101| mongod(mongo::NamespaceIndex::add_ns(mongo::OperationContext*, mongo::Namespace const&, mongo::NamespaceDetails const*) 0x462) [0xcd62a2] m31101| mongod(mongo::NamespaceIndex::add_ns(mongo::OperationContext*, mongo::StringData const&, mongo::NamespaceDetails const*) 0x5C) [0xcd63cc] m31101| mongod(mongo::NamespaceIndex::add_ns(mongo::OperationContext*, mongo::StringData const&, mongo::DiskLoc const&, bool) 0x36) [0xcd6466] m31101| mongod(mongo::MMAPV1DatabaseCatalogEntry::createNamespaceForIndex(mongo::OperationContext*, mongo::StringData const&) 0x75) [0xcfe0f5] m31101| mongod(mongo::NamespaceDetailsCollectionCatalogEntry::prepareForIndexBuild(mongo::OperationContext*, mongo::IndexDescriptor const*) 0x1C7) [0xcd2027] m31101| mongod(mongo::IndexCatalog::IndexBuildBlock::init() 0xEB) [0x8fd53b] m31101| mongod(mongo::MultiIndexBlock::init(std::vector<mongo::BSONObj, std::allocator<mongo::BSONObj> > const&) 0x6F7) [0x9057c7] m31101| mongod(mongo::IndexBuilder::_build(mongo::OperationContext*, mongo::Database*, bool, mongo::Lock::DBLock*) const 0x20C) [0xa7d90c] m31101| mongod(mongo::IndexBuilder::buildInForeground(mongo::OperationContext*, mongo::Database*) const 0xF) [0xa7ddff] m31101| mongod(mongo::repl::applyOperation_inlock(mongo::OperationContext*, mongo::Database*, mongo::BSONObj const&, bool, bool) 0x1351) [0xc12e91] m31101| mongod(mongo::repl::SyncTail::syncApply(mongo::OperationContext*, mongo::BSONObj const&, bool) 0x4F0) [0xc6a430] m31101| mongod(mongo::repl::multiSyncApply(std::vector<mongo::BSONObj, std::allocator<mongo::BSONObj> > const&, mongo::repl::SyncTail*) 0x5D) [0xc6d32d]
- duplicates
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- Closed
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