[CASSANDRA-6495] LOCAL_SERIAL use QUORUM consistency level to validate expected columns

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.0.5
• Component/s: Feature/Lightweight Transactions
• Labels: LWT
• Severity: Low
• Assignee: Sankalp Kohli
• Reporter: Sankalp Kohli

Authors

Sankalp Kohli

Reviewers

Jonathan Ellis

• Created: 17/Dec/13 02:59
• Updated: 25/Oct/19 13:11
• Resolved: 14/Jan/14 17:54

Description

If CAS is done at LOCAL_SERIAL consistency level, only the nodes from the local data center should be involved.
Here we are using QUORAM to validate the expected columns. This will require nodes from more than one DC.
We should use LOCAL_QUORAM here when CAS is done at LOCAL_SERIAL.

Also if we have 2 DCs with DC1:3,DC2:3, a single DC down will cause CAS to not work even for LOCAL_SERIAL.

Issue Links

• is related to: CASSANDRA-6939 LOCAL_SERIAL use QUORAM consistency level to read rows in the read path