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Piotr Kołaczkowski commented on CASSANDRA-6714: ----------------------------------------------- Discovered while testing CASSANDRA-6707. > Upgrading from 1.2 to 2.0 without prior nodetool flush causes data loss > ----------------------------------------------------------------------- > > Key: CASSANDRA-6714 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6714 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: Old node: Cassandra 1.2.15 (DSE) > New node: Cassandra 2.0.5.1 (DSE) > Reporter: Piotr Kołaczkowski > Assignee: Aleksey Yeschenko > Priority: Critical > > Accidentally forgetting to nodetool drain or flush before upgrading to 2.0 > causes silent loss of unflushed data. No errors or warnings are reported in > the system.log. -- This message was sent by Atlassian JIRA (v6.1.5#6160)