citus

Commit Graph

Author	SHA1	Message	Date
Jelte Fennema	02fa942be1	Fix assertion error when rolling back to savepoint (#3868 ) It was possible to get an assertion error, if a DML command was cancelled that opened a connection and then "ROLLBACK TO SAVEPOINT" was used to continue the transaction. The reason for this was that canceling the transaction might leave the `claimedExclusively` flag on for (some of) it's connections. This caused an assertion failure because `CanUseExistingConnection` would return false and a new connection would be opened, and then there would be two connections doing DML for the same placement. Which is disallowed. That this situation caused an assertion failure instead of an error, means that without asserts this could possibly result in some visibility bugs, similar to the ones described https://github.com/citusdata/citus/issues/3867	2020-06-30 11:31:46 +02:00
Jelte Fennema	b87bae71bb	Error out when using different users in the same transaction (#3869 ) Fixes #3867 As described in the issue above we return incorrect results when changing user within a transaction. This causes us to error out instead.	2020-06-10 14:07:40 +02:00
Halil Ozan Akgul	a701fc774a	Adds multi_schedule_hyperscale schedule	2020-04-10 15:54:47 +03:00

Author

SHA1

Message

Date

Jelte Fennema

02fa942be1

Fix assertion error when rolling back to savepoint (#3868 )

It was possible to get an assertion error, if a DML command was
cancelled that opened a connection and then "ROLLBACK TO SAVEPOINT" was
used to continue the transaction. The reason for this was that canceling
the transaction might leave the `claimedExclusively` flag on for (some
of) it's connections.

This caused an assertion failure because `CanUseExistingConnection`
would return false and a new connection would be opened, and then there
would be two connections doing DML for the same placement. Which is
disallowed. That this situation caused an assertion failure instead of
an error, means that without asserts this could possibly result in some
visibility bugs, similar to the ones described
https://github.com/citusdata/citus/issues/3867

2020-06-30 11:31:46 +02:00

Jelte Fennema

b87bae71bb

Error out when using different users in the same transaction (#3869 )

Fixes #3867

As described in the issue above we return incorrect results when
changing user within a transaction. This causes us to error out instead.

2020-06-10 14:07:40 +02:00

Halil Ozan Akgul

a701fc774a

Adds multi_schedule_hyperscale schedule

2020-04-10 15:54:47 +03:00

3 Commits (61bc47e6a8339fc15b7caed631f72d5db06403b5)