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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2832) Possible replay of old messages post index recovery from journal - data files containing acks reclaimed/cleaned up in error
Date Fri, 16 Jul 2010 14:07:51 GMT
Possible replay of old messages post index recovery from journal - data files containing acks
reclaimed/cleaned up in error
---------------------------------------------------------------------------------------------------------------------------

                 Key: AMQ-2832
                 URL: https://issues.apache.org/activemq/browse/AMQ-2832
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.2
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.4.0


With long lived messages and outstanding acks, ack distribution can be sparse across data
files. If a data file is in use (still has unreferenced messages, the data files containing
acks for all those messages also need to be maintained to ensure a replay of the journal replays
the corresponding acks. Currently it is possible that data files with no unreferenced messages
but with acks pertinent to an in use data file can get deleted. The result is duplicate or
relay of old messages after journal recovery (following a crash/restart)

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