106 Commits (d940cfa9927b3f88fa863ee59adadb159450cf4a)

Author	SHA1	Message	Date
Önder Kalacı	e0257aecd9	Accept invalidation messages before accessing the metadata cache (#1406) ... * Accept invalidation messages before accessing the metadata cache This commit is crucial to prevent stale metadata reads from the cache. Without this commit, some of the operations may use stale metadata which could end up with various bugs such as crashes, inconsistent/lost data etc. As an example, consider that a COPY operation is blocked on shard metadata lock. Another concurrent session updates the metadata and invalidates the cache. However, since Citus doesn't accept invalidations, COPY continues with the stale metadata once it acquires the lock. With this commit, we make sure that invalidation messages are accepted just before accessing the metadata cache and preventing any operation to use stale metadata. * Add isolation tests for placement changes and conccurrent operations - add node with reference table vs COPY/insert/update/DDL - repair shard vs COPY/insert/update/DDL - repair shard vs repair shard	2017-05-12 12:32:35 +03:00
Marco Slot	6f9e18de24	Ensure all preceding writes are visible in data migration	2017-05-11 09:42:12 +02:00
Marco Slot	a8f368fced	Fix locking in master_drop_all_shards / master_apply_delete_command	2017-05-08 17:26:55 +02:00
Brian Cloutier	22e7aa9a4f	Fix crash in isolation tests ... - There was a crash when the table a shardid belonged to changed during a session. Instead of crashing (a failed assert) we now throw an error - Update the isolation test which was crashing to no longer exercise that code path - Add a regression test to check that the error is thrown	2017-04-29 04:25:26 +03:00
Andres Freund	dfe7b357c5	Simple isolationtester dml vs. repair tests.	2016-10-27 00:31:41 -07:00
Andres Freund	121b868da5	Add very basic isolationtester infrastructure including a trivial test.	2016-10-27 00:31:41 -07:00