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MyRocks has a deadlock detection feature (off by default, one needs to enable it by setting @@rocksdb_deadlock_detect.
If deadlock detection is enabled, information about the last N deadlocks can be viewed through:
- information_schema.rocksdb_deadlock table
- SHOW ENGINE ROCKSDB TRANSACTION STATUS command;
TokuDB's Range locking system includes a deadlock detector, and
- It is always enabled
- It only works within one lock tree.
- It does build the wait graph internally but does not expose it to outside (so it's difficult to provide deadlock information to the user)
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