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From: Nicolas Liochon <nkeywal@gmail.com>
Date: Fri, 18 Oct 2013 23:06:50 +0200
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Subject: Re: [VOTE] The 6th hbase-0.96.0 release candidate is available for
 download
To: dev@hbase.apache.org
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I'm +1.
I've downloaded the released, deployed it. Ran YCSB, kills the nodes. I've
ran a trunk client vs. the RC5, it works.
As Elliott on the good news, the modules, the recovery, MTTR ( ;-), ...
As him, I don't see any open issue that would break the wire compatibility.
We will need to fix the bad news he mentions. This is doable in a point
release.

I think it would be great to deliver now our 96.0 and do as the 0.94: a
minor release per month.

Thanks all,

Nicolas


On Fri, Oct 18, 2013 at 9:37 PM, Elliott Clark <eclark@apache.org> wrote:

> I'm -0 this being the first 96 release.
>
> For the good news:
> * On a small cluster I've run all of the IT tests with both the calm
> chaos monkey and the slow deterministic chaos monkey.  Everything
> passed and looked good.  4 tests  of 5 hours each pass consistently.
> * Runs of YCSB Reads were better than stock 0.94 (naggles and short
> scans were the big wins).
> * This works well with Hadoop 2.2.0
> * Thanks to the znode watcher our MTTR if a region server crashes is
> pretty great.
> * Protobuf means our wire compat story is great.
> * The client module and the Testing util module mean that for
> downstreamers using HBase is easier than ever.
> * I see really large jumps in read and write throughput when the
> balancer runs so it looks like the new balancer does a good job.
> * Tar's are signed and look good
> * The jars are in place.
>
> For the Bad news:
> * This release won't scale up to large clusters busy cluster.  The
> client uses way too many threads.
> * Not a single IT test that uses the client from lots of hosts passes
> (TestLoadAndVerify or Big Linked List)
> * YCSB inserts fail if run from more than one driver node at a time
> * YCSB perf is pretty far behind 0.94 until compaction dominate.
>
> For the in-between news:
> * Upping the write buffer and lowering the number of async actions
> outstanding per server help and can help work around things.  But they
> are just work arounds and not everyone can up the write buffer enough
> to make this go away.
> * This can be fixed without changing anything on the wire so fixing
> this in a point release should be possible.
>
>
> On a larger live serving cluster I can't see this release being
> deployed ever.  But I also can't see a short term fix that can be
> applied in time for another rc to be cut.
>
>
> On Thu, Oct 17, 2013 at 2:49 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> > +1
> >
> > I did the following on a single node cluster which runs HBase against
> > hadoop-2:
> >
> > Checked out layouts for artifacts
> > Ran TestAcidGuarantees
> > Performed several commands using HBase shell
> > Ran rowcounter on a small table and verified the result through shell
> > 'count' command.
> >
> > All was good.
> >
> > On Tue, Oct 15, 2013 at 7:14 PM, Enis S=F6ztutar <enis@hortonworks.com>
> wrote:
> >
> >> Spent the day testing the RC. Here is my +1 based on:
> >>
> >>  - Downloaded artifacts for -hadoop1-bin -hadoop2-bin and -src
> >>  - Verified checksums for the artifacts (except for RMD160)
> >>    Note: It would be useful if we can get these in a machine readable
> >> format to do automated verification with {sha*|md5}sum -c (for the nex=
t
> >> time)
> >>  - Verified signatures
> >>  - Checked out documentation
> >>  - Checked out layouts for artifacts
> >>  - Verified hadoop versions
> >>  - Run local cluster
> >>  - Build source artifact with hadoop1 and hadoop2
> >>  - Run small unit tests
> >>  - Deployed on a 7 node cluster with hadoop-2
> >>  - Run small tests including LoadTestTool, ITBigLinkedList,
> ITLoadAndVerify
> >> and some shell smoke tests
> >>
> >> Plus we have been running the tip of 0.96 branch through our test
> harness
> >> including many IT's with and without CM configurations.
> >>
> >> Let's ship it !
> >>
> >> Enis
> >>
> >>
> >> On Tue, Oct 15, 2013 at 6:25 PM, Devaraj Das <ddas@hortonworks.com>
> wrote:
> >>
> >> > +1. Based on some large scale tests with bits very close to RC5. Fou=
nd
> >> two
> >> > issues - HBASE-9773 and HBASE-9777 and neither of them are release
> >> blockers
> >> > in my mind.
> >> >
> >> >
> >> > On Fri, Oct 11, 2013 at 4:20 PM, Stack <stack@duboce.net> wrote:
> >> >
> >> > > hbase-0.96.0 will be our next major release.  It is intended to
> >> supplant
> >> > > the 0.94.x series.
> >> > >
> >> > > hbase-0.96.0RC5 is our sixth hbase-0.96.0 release candidate.
> >> > >
> >> > > The signed tarballs are available here:
> >> > >
> >> > >  http://people.apache.org/~stack/hbase-0.96.0RC5<
> >> > > http://people.apache.org/~stack/0.96.0RC5/>
> >> > > / <http://people.apache.org/~stack/0.96.0RC5/>
> >> > >
> >> > > Note that hbase-0.96.0 comes in two flavors; a build that includes
> and
> >> > runs
> >> > > on hadoop-1.x and another for hadoop-2.x.  You must chose the hbas=
e
> >> that
> >> > > suits your hadoop context.
> >> > >
> >> > > Both sets of hbase artifacts, for hadoop1 and for hadoop2, are
> >> available
> >> > in
> >> > > this maven staging repo:
> >> > >
> >> > >
> >> https://repository.apache.org/content/repositories/orgapachehbase-165/
> >> > >
> >> > > More than 2k issues [1][2][3][4] are attributed to this version
> >> (counting
> >> > > fixes done against this and the 0.95.x developer series of
> releases).
> >> >  More
> >> > > than 250 fixes have been committed since 0.95.2.  Synopsis of the
> main
> >> > > changes between 0.94.x and 0.96.x will follow soon.
> >> > >
> >> > > Please take it for a spin.  We are interested in any issues found
> but
> >> in
> >> > > particular, we would appreciate feedback on how well the migration
> of a
> >> > > 0.94.x dataset to run under 0.96.0 works [5].
> >> > >
> >> > > Should this candidate become hbase-0.96.0?  Please vote +/-1 by
> Friday,
> >> > > October 18th.
> >> > >
> >> > > Thanks,
> >> > > St.Ack
> >> > >
> >> > > 1. 0.96.0 266 issues http://goo.gl/wLmu1Y
> >> > > 2. 0.95.2 340 issues http://goo.gl/4djjE9
> >> > > 3. 0.95.1 265 issues http://goo.gl/TcdckW
> >> > > 4. 0.95.0 1263 issues http://goo.gl/Iqcx2i
> >> > > 2. http://hbase.apache.org/book.html#upgrade0.96
> >> > >
> >> >
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