[ https://issues.apache.org/jira/browse/CASSANDRA-6194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams reassigned CASSANDRA-6194: ------------------------------------------- Assignee: Jonathan Ellis > speculative retry can sometimes violate consistency > --------------------------------------------------- > > Key: CASSANDRA-6194 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6194 > Project: Cassandra > Issue Type: Bug > Components: Core > Reporter: Brandon Williams > Assignee: Jonathan Ellis > Fix For: 2.0.2 > > > This is most evident with intermittent failures of the short_read dtests. > I'll focus on short_read_reversed_test for explanation, since that's what I > used to bisect. This test inserts some columns into a row, then deletes a > subset, but it performs each delete on a different node, with another node > down (hints are disabled.) Finally it reads the row back at QUORUM and > checks that it doesn't see any deleted columns, however with speculative > retry on this often fails. I bisected this to the change that made 99th > percentile SR the default reliably by looping the test enough times at each > iteration to be sure it was passing or failing. -- This message was sent by Atlassian JIRA (v6.1#6144)