Clean shutdown should not result in recovery, if so it is a bug. Can you reproduce a test case for this?
A bit simplified the recovery process can be divided into two parts: o Put the store files in a consistent state by replaying the logical log (this is fast). o Rebuild the id generators (this is slow on large stores because the whole file has to be scanned) There are solutions to this problem and we will put in a fix for this in b10. -Johan On Thu, Jul 30, 2009 at 7:25 AM, Andreas Guenther<[email protected]> wrote: > Can someone explain in more detail why the recovery takes so long and if > there's a way to short-cut it? I am experiencing this too recently and > it even happens after a clean shutdown. Right now, it's approx 30 min > and unfortunately an unacceptable downtime in my company ;( > > Thanks in advance, > -Andreas > > Neil Ellis wrote: >> Hi Johan >> >> That would be great, those are the things that will cause us problems >> when we get to production. >> >> All the best >> Neil >> On 26 Jul 2009, at 13:07, Johan Svensson wrote: >> >> >>> Hi Neil, >>> >>> It is possible to make Neo4j act as a read-only database resulting in >>> no recovery after a non clean shutdown. We are planing to have a look >>> at this after the b9 release. Also speeding up the recovery process is >>> something we have to do before going 1.0 final (should be possible to >>> drop the rebuild of id generator which is taking all the time during >>> recovery). >>> >>> Regards, >>> -Johan >>> >>> On Sun, Jul 26, 2009 at 2:35 AM, Neil Ellis<[email protected]> >>> wrote: >>> >>>> Hi Guys >>>> >>>> So thanks for the plug for peepwl :-) I saw the slides from OSCON :-) >>>> >>>> Okay so we have a strong use case where we want to access Neo but >>>> don't want to trigger a complete transaction recovery if Neo fails. >>>> We're using Neo as read-only at this point. Recovery currently takes >>>> about half an hour or an hour which is a lot of downtime. >>>> >>>> Is it possible to make it so that Neo doesn't do this check and acts >>>> as a read-only database? >>>> >>>> All the best >>>> Neil _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
