I found that link while you were answering, it seems <g>. I also found https://issues.apache.org/jira/browse/AMQ-3866 and it looks a lot like what I experience.
I tried to delete the index, start a broker and debug as explained in that ticket. Breakpointing at MessageDatabase#process, line 904 (version 5.7.0) tells me it seems there is XA in the mix (data is a KahaAddMessageCommand instance, with data.f_transactionInfo.f_localTransactionId == null and data.f_transactionInfo.f_xaTransactionId != null). I guess it's due to the use of mKahaDB, where I am transacting across both stores. In that ticket, you asked for the relevant data file. I can share mine if there's any interest -- I just have to find a convenient way to provide you with a 32 Mb file. On Tue, Oct 23, 2012 at 12:24 PM, Gary Tully <gary.tu...@gmail.com> wrote: > have a read of > http://activemq.apache.org/why-do-kahadb-log-files-remain-after-cleanup.html > > The logging referenced there will show you what destinations are > holding on to references to the journal data files. > > w.r.t the usage %, the journal size increases in chunks of data file > size, so a new journal data file can push the usage over the limit. > > On 23 October 2012 09:15, Gilles Harloux <gilles.harl...@gmail.com> wrote: >> Hi, >> >> I have a system embedding a broker with KahaDB as a store. I am trying >> to get a feel about disaster recovery behavior. So what I am basically >> doing is randomly kill & restart the process. I see a condition (after >> killing & restarting multiple times) where the messages get consumed, >> but kahaDB journal files (db-*.log) don't get reclaimed. As I set up a >> storeUsage limit, it ends up blocking the system. >> >> I say the messages get consumed, because I can see my application >> logging what messages it gets to handle; Also, JMX tells me that the >> broker's TotalMesageCount is zero, while the StorePercentUsage is >> above 100 (depending on parameters such as message size & rate, I saw >> anything from 112 to 293 percent usage). >> >> So, two questions: >> - How is it possible (for any reasons) to get a usage percentage >> above 100? (In other situations, I saw it happen with memory too). >> - Why is it I can't get kahaDB to reclaim seemingly unused journal files? >> >> TIA, > > > > -- > http://redhat.com > http://blog.garytully.com
