citus

Author	SHA1	Message	Date
Andres Freund	90ad02f5fb	Integrate router executor into transaction management framework. One less place managing remote transactions. It also makes it fairly easy to use 2PC for certain modifications (e.g. reference tables). Just issue a CoordinatedTransactionUse2PC(). If every placement failure should cause the whole transaction to abort, additionally mark the relevant transactions as critical.	2016-12-12 15:18:12 -08:00
Andres Freund	21449ed0a0	Convert multi_shard_transaction.[ch] to new framework.	2016-12-12 15:18:12 -08:00
Andres Freund	7ac4a2bc94	Coordinated remote transaction management.	2016-12-12 15:18:12 -08:00
Andres Freund	820f300de2	Make prepared transactions available if not configured.	2016-12-08 19:57:22 -08:00
Andres Freund	8e32951eb9	Centralized Connection Lifetime Management. Connections are tracked and released by integrating into postgres' transaction handling. That allows to to use connections without having to resort to having to disable interrupts or using PG_TRY/CATCH blocks to avoid leaking connections. This is intended to eventually replace multi_client_executor.c and connection_cache.c, and to provide the basis of a centralized transaction management. The newly introduced transaction hook should, in the future, be the only one in citus, to allow for proper ordering between operations. For now this central handler is responsible for releasing connections and resetting XactModificationLevel after a transaction.	2016-12-07 11:43:18 -08:00