[ https://issues.apache.org/jira/browse/CASSANDRA-16721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Caleb Rackliffe updated CASSANDRA-16721: ---------------------------------------- Status: Patch Available (was: Review In Progress) > Repaired data tracking on a read coordinator is susceptible to races between > local and remote requests > ------------------------------------------------------------------------------------------------------ > > Key: CASSANDRA-16721 > URL: https://issues.apache.org/jira/browse/CASSANDRA-16721 > Project: Cassandra > Issue Type: Bug > Components: Consistency/Coordination > Reporter: Sam Tunnicliffe > Assignee: Caleb Rackliffe > Priority: Normal > Fix For: 4.0.x > > > At read time on a coordinator which is also a replica, the local and remote > reads can race such that the remote responses are received while the local > read is executing. If the remote responses are mismatching, triggering a > {{DigestMismatchException}} and subsequent round of full data reads and read > repair, the local runnable may find the {{isTrackingRepairedStatus}} flag > flipped mid-execution. If this happens after a certain point in execution, > it would mean > that the RepairedDataInfo instance in use is the singleton null object > {{RepairedDataInfo.NULL_REPAIRED_DATA_INFO}}. If this happens, it can lead to > an NPE when calling {{RepairedDataInfo::extend}} when the local results are > iterated. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org