There are many small issues with the current RC, but I agree with Stack that we should get it out ASAP even if it's followed by a minor rev. It is stable and very very usable. Also peeps are usually aware that a .0 is always a bit rough on the edges.
So +1 J-D On Sat, Aug 1, 2009 at 12:26 PM, stack<st...@duboce.net> wrote: > Yes, its supposed to restart itself and check in with the master as though > it a new server (as J-D notes). > > Do you have log from the incident? Open an issue if its broke? > > I see you flipped your vote from -1 to +1. I think we should fix this > failed restart but in the scheme of things, IMO, I don't think it a > showstopper sufficient to sink the RC. We can make a 0.20.1 to follow close > on 0.20.0 with fixes for the likes of this and for the documentation issue > noted by Lei Wang up on the list. > > St.Ack > > > > On Fri, Jul 31, 2009 at 3:02 PM, Andrew Purtell <apurt...@apache.org> wrote: > >> My understanding is the region server is supposed to restart and check in >> with the master as if newly launched. I could be wrong. I was away for a >> while. At least following the log messages this appears to be the intent. >> >> - Andy >> >> >> >> >> ________________________________ >> From: Ryan Rawson <ryano...@gmail.com> >> To: hbase-dev@hadoop.apache.org >> Sent: Friday, July 31, 2009 2:11:36 PM >> Subject: Re: ANN: hbase 0.20.0 Release Candidate 1 available for download >> >> It is not supposed to restart, you will need to use supervisor to >> achieve that. >> >> If the ZK session is timed out, then the RS has no idea if the master >> has reassigned regions or not. The RS then FATALS, the master >> recovers the log, and all will be well(ish). >> >> The zookeeper daemons also need supervising, since they might FATAL >> but can be restarted to continue on later. >> >> On Fri, Jul 31, 2009 at 2:07 PM, Andrew Purtell<apurt...@apache.org> >> wrote: >> > -1 >> > >> > Region server did not restart after ZK timeout. Entered a high stress >> period >> > while compacting under heavy write load, high RAM commitment, and >> > concurrency. >> > >> > This is a stress test and I need to tune down vm.swappiness some more, >> but >> > the region server shut down and did not restart. >> > >> > See attached. >> > >> > - Andy >> > >> > >> > ________________________________ >> > From: stack <st...@duboce.net> >> > To: hbase-dev@hadoop.apache.org; hbase-u...@hadoop.apache.org >> > Sent: Wednesday, July 29, 2009 5:31:31 PM >> > Subject: ANN: hbase 0.20.0 Release Candidate 1 available for download >> > >> > The first hbase 0.20.0 release candidate is available for download: >> > >> > http://people.apache.org/~stack/hbase-0.20.0-candidate-1/<http://people.apache.org/%7Estack/hbase-0.20.0-candidate-1/> >> <http://people.apache.org/%7Estack/hbase-0.19.0-candidate-1/> >> > >> > More than 400 issues have been addressed. The release notes are >> available >> > here: http://su.pr/18zcEO <http://tinyurl.com/8xmyx9>. >> > >> > HBase 0.20.0 runs on Hadoop 0.20.0. Alot has changed since 0.19.x >> including >> > configuration fundamentals. Be sure to read the 'Getting Started' >> > documentation available here: >> > http://su.pr/211OYP.< >> http://people.apache.org/%7Estack/hbase-0.19.0-candidate-1/> >> > >> > If you wish to bring your 0.19.x hbase data forward to 0.20.0, you will >> need >> > to run a migration. See >> http://wiki.apache.org/hadoop/Hbase/HowToMigrate. >> > First read the overview and then go to the section, 'From 0.19.x to >> 0.20.x'. >> > >> > Should we release this candidate as hbase 0.20.0? Please vote +1/-1 by >> > Monday August 3rd. >> > >> > Yours, >> > The HBasistas >> > >> > P.S. 0.20.0 Highlights include: >> > >> > + Much improved performance >> > + Master is no longer SPOF >> > + Rolling restarts -- no need to take down whole cluster updating config. >> or >> > making minor upgrades >> > + A new, more comprehensive API (The old API is still present but >> > deprecated) >> > + Improved mapreduce connectors >> > + New contrib package with updated Transactional HBase (THBase) and >> Indexed >> > HBase (ITHBase) as well as a new REST gateway called stargate >> > + And, as they say on the radio, "much, much more". >> > >> > >> >> >> >> >> >
