[jira] [Assigned] (KUDU-1679) Propagate timestamps for scans
[ https://issues.apache.org/jira/browse/KUDU-1679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] David Alves reassigned KUDU-1679: - Assignee: Alexey Serbin (was: David Alves) > Propagate timestamps for scans > -- > > Key: KUDU-1679 > URL: https://issues.apache.org/jira/browse/KUDU-1679 > Project: Kudu > Issue Type: Sub-task > Components: tserver >Affects Versions: 1.0.1 >Reporter: David Alves >Assignee: Alexey Serbin > > We only propagate timestamps from writes to reads, not between two reads. > This leaves the door open to unrepeatable read anomalies: > If T1, T2 are reads from the same client where T2 starts after the response > from T1 is received and neither are assigned timestamps by the client. It > might be the case where T2’s observed value actually precedes T1’s value in > the row history if T1 and T2 are performed in different servers, as T2 can be > assigned a timestamp that is lower than T1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Assigned] (KUDU-1679) Propagate timestamps for scans
[ https://issues.apache.org/jira/browse/KUDU-1679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] David Alves reassigned KUDU-1679: - Assignee: David Alves > Propagate timestamps for scans > -- > > Key: KUDU-1679 > URL: https://issues.apache.org/jira/browse/KUDU-1679 > Project: Kudu > Issue Type: Sub-task > Components: tserver >Affects Versions: 1.0.1 >Reporter: David Alves >Assignee: David Alves > > We only propagate timestamps from writes to reads, not between two reads. > This leaves the door open to unrepeatable read anomalies: > If T1, T2 are reads from the same client where T2 starts after the response > from T1 is received and neither are assigned timestamps by the client. It > might be the case where T2’s observed value actually precedes T1’s value in > the row history if T1 and T2 are performed in different servers, as T2 can be > assigned a timestamp that is lower than T1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
