Read the leveldb docs about the sync. They pretty much tell you that its safe to run with sync=false.
On Fri, Jul 19, 2013 at 1:38 PM, Stefan Burkard <sburk...@gmail.com> wrote: > Thanks. > > I just read the camel-leveldb page. Do I understand it correctly that the " > sync" option must be true to avoid message loss on power outage or similar > circumstances where the system goes down unexpectedly? > > If yes: is there already an expected release date for Camel 2.12? > > Cheers > Stefan > > > On Fri, Jul 19, 2013 at 9:29 AM, Claus Ibsen <claus.ib...@gmail.com> wrote: > >> Hi >> >> Yeah leveldb has more tools. Just google. >> >> The camel-leveldb docs is here >> http://camel.apache.org/leveldb >> >> >> >> On Thu, Jul 18, 2013 at 9:48 AM, Stefan Burkard <sburk...@gmail.com> >> wrote: >> > Hi Claus >> > >> > I'm using camel-hawtdb 2.9.6 and (according to the classpath) hawtdb 1.6. >> > The fact that hawtdb has no recovery tools but I need to build them by >> > myself is bad news to me. After all I use the great Camel framework to >> > avoid building general-purpose functionality like this by myself. >> > >> > How about LevelDB? Has it better tool support? And can I already use >> > leveldb with a Camel 2.x release? I stumbled over LevelDB while searching >> > for recovery options for HawtDB, but I didn't find an example how to use >> it >> > with the aggregator. Is there a unittest or similar I can look at? >> > >> > Thanks >> > Stefan >> > >> > >> > >> > >> > ************************************************************************ >> > Von "aabändle" bis "zwüsche" - das umfangreichste Berndeutsch-Wörterbuch >> > im Internet: http://www.berndeutsch.ch >> > Ausserdem: Das Blog zur Website unter http://blog.berndeutsch.ch >> > Facebook-Seite unter https://www.facebook.com/berndeutsch >> > Google+ Seite unter http://www.google.com/+berndeutsch >> > >> > >> > On Wed, Jul 17, 2013 at 10:10 AM, Claus Ibsen <claus.ib...@gmail.com> >> wrote: >> > >> >> What version of Camel and HawtDB are you using? >> >> >> >> To try to recover you would possible need to write some java code with >> >> the HawtDB API to load the corrupted file(s) and peak inside. >> >> >> >> Down the road we recommend using camel-leveldb instead of >> >> camel-hawtdb. This uses LevelDB as the store instead which is a much >> >> more mature and widespread used store. >> >> https://code.google.com/p/leveldb/ >> >> >> >> Apache ActiveMQ 5.9 offers leveldb out of the box, and is being >> >> considered as the recommended/default store over its KahaDB store. >> >> >> >> The camel-leveldb has the same functionality as camel-hawtdb and is >> >> very similar to setup. >> >> >> >> >> >> On Tue, Jul 16, 2013 at 10:12 AM, Stefan Burkard <sburk...@gmail.com> >> >> wrote: >> >> > Hi Camel users >> >> > >> >> > I have a component with 2 persistent aggregators. One receives all >> >> messages, >> >> > one only a part of them. After a lot of test runs without problems I >> had >> >> > yesterday a serious problem with the aggregator persistence (hawtdb). >> >> > >> >> > I don't know yet what causes the problems, but however, problems can >> >> occur. >> >> > My problem is that I cannot recover the data from the hawtdb-files. >> >> > >> >> > Im my logs, I got first of all about 8 stacktraces like the attached >> >> > "stacktrace1.txt". The number in the error message "The requested page >> >> was >> >> > not an extent: 35" is growing from stacktrace to stacktrace from 35 to >> >> 1163. >> >> > >> >> > Then, I got some stacktraces like the attached "stacktrace2.txt". >> >> > >> >> > Finally I got A LOT of stacktraces like the attached >> "stacktrace3.txt". >> >> > >> >> > After shutting down the component gracefully, I tried to restart it, >> but >> >> > this throws stacktraces like the attached "stacktrace-startup.txt". >> >> > >> >> > I can only start the component again if I rename the hawtdb-files so >> they >> >> > are ignored and new hawtdb-files are created. >> >> > >> >> > This leaves me with the question: how can I recover the corrupted >> >> > hawtdb-files? I didn't found anything about this subject and if this >> is >> >> not >> >> > possible, this would be a real show-stopper. >> >> > >> >> > Thanks for any help >> >> > Stefan >> >> > >> >> >> >> >> >> >> >> -- >> >> Claus Ibsen >> >> ----------------- >> >> Red Hat, Inc. >> >> Email: cib...@redhat.com >> >> Twitter: davsclaus >> >> Blog: http://davsclaus.com >> >> Author of Camel in Action: http://www.manning.com/ibsen >> >> >> >> >> >> -- >> Claus Ibsen >> ----------------- >> Red Hat, Inc. >> Email: cib...@redhat.com >> Twitter: davsclaus >> Blog: http://davsclaus.com >> Author of Camel in Action: http://www.manning.com/ibsen >> -- Claus Ibsen ----------------- Red Hat, Inc. Email: cib...@redhat.com Twitter: davsclaus Blog: http://davsclaus.com Author of Camel in Action: http://www.manning.com/ibsen
