----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/7775/#review13724 -----------------------------------------------------------
hedwig-server/src/main/java/org/apache/hedwig/server/persistence/BookkeeperPersistenceManager.java <https://reviews.apache.org/r/7775/#comment29409> Simply logging isn't fully correct either. The client will hang. You need to complete the callback as well. request.callback.scanFailed(ctx, new PubSubException.UncertainStateException(bke)); It may also make sense to release the topic, to reset the state. - Ivan Kelly On Nov. 5, 2012, 10:36 a.m., Jiannan Wang wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/7775/ > ----------------------------------------------------------- > > (Updated Nov. 5, 2012, 10:36 a.m.) > > > Review request for bookkeeper. > > > Description > ------- > > Since InMemorySubscriptionState and LedgerRanges is maintained separately, > there may exist such inconsistent state: > (1). Topic ledgers: L1 [1 ~ 2], L2 [3 ~ ] > (2). Subscriber consumes to 2 and InMemorySubscriptionState is updated > successfully but failed when updating subscription state metadata > (3). AbstractSubscriptionManager#MessagesConsumedTask use > InMemorySubscriptionState to do garbage collection and L1 is delete > (4). If Hub restarts at this time, old subscription state is read and Hub > will try to deliver message from 1 > > > This addresses bug BOOKKEEPER-442. > https://issues.apache.org/jira/browse/BOOKKEEPER-442 > > > Diffs > ----- > > > hedwig-server/src/main/java/org/apache/hedwig/server/persistence/BookkeeperPersistenceManager.java > 40811de > > hedwig-server/src/main/java/org/apache/hedwig/server/subscriptions/AbstractSubscriptionManager.java > bbe8edf > > hedwig-server/src/main/java/org/apache/hedwig/server/subscriptions/InMemorySubscriptionState.java > 34b54b8 > > hedwig-server/src/test/java/org/apache/hedwig/server/persistence/TestBookKeeperPersistenceManager.java > c645b11 > > Diff: https://reviews.apache.org/r/7775/diff/ > > > Testing > ------- > > Two test are added > > > Thanks, > > Jiannan Wang > >
