Stability seems good to me. I sometimes get MS SQL and MySQL database
corruptions either from power outages or OOM. I think you've done an
insanely awesome job putting H2 together Thomas. Other more "Mainstream"
products seem to get more hype and attention, but I don't think that
makes them better. They probably just are marketed better.
Ryan
On 9/06/2016 1:59 AM, Thomas Mueller Graf wrote:
Hi,
What I could do is make H2 version 1.4.192 "non-beta" now. I didn't
want to do that because for some use cases (according to Steve
McLeod), performance was not great with versions up to and including
1.4.191, and I didn't know about 1.4.192. But now I have confirmation
from Steve McLeod that performance improved almost to the PageStore
level. Not quite as good, but relatively close. As for stability, I
didn't see any major problems with version 1.4.191 and 1.4.192.
What is a bit unexpected is that the jar file of 1.4.192 is compiled
with Java 7, which doesn't match the documentation. This is my mistake.
Or, probably easier, is to release version 1.4.193 soon, and mark that
as stable.
Regards,
Thomas
On Tuesday, June 7, 2016, Dennis Wagelaar
<dennis.wagel...@healthconnect.be
<mailto:dennis.wagel...@healthconnect.be>> wrote:
It's the same for us: we use H2 in production as well, as a
client-side database that caches part of the server-side database
for offline use. If there's ever an inquiry into the cause of a
particularly painful data loss of offline recorded data, using a
beta version of a database engine is enough to conclude the
inquiry. We are currently looking at the following timeline:
- 2011: choice of database engine: HSQLDB is inactive since 2010,
H2 is actively developed: we chose H2
- 2014: last stable release of H2
- 2015: HSQLDB development restarted; 2.x release series
- 2016: still no stable H2 release
We're currently using H2 1.3.168: Upgrading to 1.3.176 has
resulted in several cases of database file corruption, so we never
pushed that to production. As a result, we're currently stuck with
1.3.168.
Op maandag 6 juni 2016 10:26:57 UTC+2 schreef Silvio:
Thank you for the info. I am still very uncomfortable using
something that is marked as beta in production. But this beta
status has lasted for a long time already and it is unclear
when an actual release version will be available. And in the
meantime I have seen multiple remarks about things that have
been improved in 1.4 wrt. the PageStore.
Personally I would have preferred a release status for 1.4 as
soon as the software was reliable enough to warrant use in
production, regardless of a possible format change. Why not
call that 1.5, 1.6 aso. to mark such backward incompatibility?
On Sunday, June 5, 2016 at 9:15:19 AM UTC+2, Noel Grandin wrote:
We use 1.4 in production with both PageStore and MVStore,
both are pretty stable.
We currently find PageStore to be slightly more stable
when running on some systems in the field where power
outages are extremely common (i.e. more than once per
day), but even there we are thinking of moving to MVStore
with the latest 1.4 builds.
The only downside with MVStore is that there might be a
binary format change at some point in the future, which
will need need a full dump and restore to upgrade across.
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