Hi, By the way, the "corruption after out of memory" is now fixed in the trunk.
Regards, Thomas On Tuesday, June 9, 2015, Thomas Mueller <thomas.tom.muel...@gmail.com> wrote: > Hi, > > I have now a test case where a MVStore file can not be opened after an out > of memory. It doesn't look like the file is corrupt, it's just that the > recovery code can not deal with this case yet. The stack trace is: > > Caused by: java.lang.IllegalStateException: Chunk 2 is invalid [1.4.187/6] > at org.h2.mvstore.DataUtils.newIllegalStateException(DataUtils.java:773) > at org.h2.mvstore.MVStore.readStoreHeader(MVStore.java:695) > at org.h2.mvstore.MVStore.<init>(MVStore.java:348) > > If you have stack traces of your failures (even better MVStore files), > that would be great. > > Regards, > Thomas > > On Saturday, June 6, 2015, Klaus Wuestefeld <m...@klaus.pro > <javascript:_e(%7B%7D,'cvml','m...@klaus.pro');>> wrote: > >> Thanks Thomas! I believe simulation is the way to go. It can give you >> more coverage than trying to perform real power failures. >> >> On Fri, Jun 5, 2015 at 1:08 PM, Thomas Mueller >> <thomas.tom.muel...@gmail.com> wrote: >> > Hi, >> > >> > The test interrupts the thread, which will close the database file (as >> > always with FileChannel). Subsequent close calls will fail, this is a >> bug >> > that I need to fix. However, I don't think this will corrupt the >> database >> > file. >> > >> > Interrupting the thread is one way to test it, killing the process is >> > another. There are already such tests, and so far I couldn't reproduce >> the >> > problem. >> > >> > Additional tests are with a file system implementation that simulates >> > re-ordering writes, and power failure. Simulating power failures I >> have, but >> > re-ordering writes is still missing. >> > >> > Then, real power failure tests are needed. This will require some work, >> but >> > I think it is important. I will work on that. >> > >> > Regards, >> > Thomas >> > >> > >> > >> > On Tuesday, June 2, 2015, Nicolas Fortin (OrbisGIS) < >> nico.de...@gmail.com> >> > wrote: >> >> >> >> Hi, >> >> >> >> I try to write the unit test with thread killing. As I can't reconnect >> to >> >> the DB I'm facing some problem to check if the database is corrupted. >> (see >> >> attached traceback) >> >> >> >> https://github.com/nicolas-f/h2database/tree/thread_kill_mvstore >> >> >> >> As I said before, I want to reproduce a problem of corrupted db we >> have in >> >> production when using this kind of "brutal" thread kill. >> >> >> >> regards, >> >> >> >> -- >> >> >> >> Nicolas Fortin >> >> IRSTV FR CNRS 2488 >> >> GIS http://orbisgis.org >> >> Spatial DB http://h2gis.org >> >> Noise http://noisemap.orbisgis.org >> >> >> >> >> >> >> >> Le jeudi 28 mai 2015 22:04:22 UTC+2, Thomas Mueller a écrit : >> >>> >> >>> Hi, >> >>> >> >>> That's very interesting. >> >>> >> >>> So far I know about a potential problem in case of power failure, and >> I'm >> >>> working on fix for that. This is related to write re-ordering. >> Recovery is >> >>> affected, and truncating the file needs to be delayed, but both >> should be >> >>> quite simple to fix. >> >>> >> >>> However, the problem you describe is not related to power failure. I >> >>> would be very interested in a test case! >> >>> >> >>> Regards, >> >>> Thomas >> >>> >> >> -- >> >> You received this message because you are subscribed to the Google >> Groups >> >> "H2 Database" group. >> >> To unsubscribe from this group and stop receiving emails from it, send >> an >> >> email to h2-database+unsubscr...@googlegroups.com. >> >> To post to this group, send email to h2-database@googlegroups.com. >> >> Visit this group at http://groups.google.com/group/h2-database. >> >> For more options, visit https://groups.google.com/d/optout. >> > >> > -- >> > You received this message because you are subscribed to a topic in the >> > Google Groups "H2 Database" group. >> > To unsubscribe from this topic, visit >> > https://groups.google.com/d/topic/h2-database/FPyYtNPbgJQ/unsubscribe. >> > To unsubscribe from this group and all its topics, send an email to >> > h2-database+unsubscr...@googlegroups.com. >> > To post to this group, send email to h2-database@googlegroups.com. >> > Visit this group at http://groups.google.com/group/h2-database. >> > For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> Valeu, Klaus. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "H2 Database" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to h2-database+unsubscr...@googlegroups.com. >> To post to this group, send email to h2-database@googlegroups.com. >> Visit this group at http://groups.google.com/group/h2-database. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "H2 Database" group. 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