mck created CASSANDRA-14679: ------------------------------- Summary: Prevent generating new tokens on a node when data exists Key: CASSANDRA-14679 URL: https://issues.apache.org/jira/browse/CASSANDRA-14679 Project: Cassandra Issue Type: Bug Reporter: mck
Data loss is possible if a node starts up without {{system.local}} data available. If a node restarts and its {{system.local}} data is unavailable it will generate new tokens. This will cause range movements in the cluster causing potential data loss, and these range movements are not part of a bootstrap/decommission and leaves orphaned data around the cluster. This can happen if a node restarts without a JBOD entry available, or if the cassandra.yaml changes and leaves a JBOD entry out. If a node starts up, finds data but not its {{system.local}} it should not generate new tokens. Neither should it assign itself a new Host ID. This is described in more detail in http://thelastpickle.com/blog/2018/08/22/the-fine-print-when-using-multiple-data-directories.html -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org