citus

Author	SHA1	Message	Date
Jason Petersen	a578506718	Add multi-row isolation tests	2017-08-10 01:10:09 -07:00
Murat Tuncer	5cb9466255	Rebase node metadata isolation tests	2017-08-09 14:22:09 +02:00
Marco Slot	ad0fdf57ca	Add add/remove node rollback isolation tests	2017-08-09 14:09:54 +02:00
Marco Slot	5923334114	Add transaction recovery regression tests	2017-07-24 20:44:38 +02:00
Onder Kalaci	3369f3486f	Introduce distributed transaction ids This commit adds distributed transaction id infrastructure in the scope of distributed deadlock detection. In general, the distributed transaction id consists of a tuple in the form of: `(databaseId, initiatorNodeIdentifier, transactionId, timestamp)`. Briefly, we add a shared memory block on each node, which holds some information per backend (i.e., an array `BackendData backends[MaxBackends]`). Later, on each coordinated transaction, Citus sends `SELECT assign_distributed_transaction_id()` right after `BEGIN`. For that backend on the worker, the distributed transaction id is set to the values assigned via the function call. The aim of the above is to correlate the transactions on the coordinator to the transactions on the worker nodes.	2017-07-18 15:01:42 +03:00