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HBase, mail # dev - [VOTE] The 6th hbase-0.96.0 release candidate is available for download


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Stack 2013-10-11, 23:20
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Devaraj Das 2013-10-16, 01:25
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Enis Söztutar 2013-10-16, 02:14
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Enis Söztutar 2013-10-17, 21:12
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Ted Yu 2013-10-17, 21:49
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Elliott Clark 2013-10-18, 19:37
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Re: [VOTE] The 6th hbase-0.96.0 release candidate is available for download
Nicolas Liochon 2013-10-18, 21:06
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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 Söztutar <[EMAIL PROTECTED]>
> 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 next
> >> 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 <[EMAIL PROTECTED]>
> wrote:
> >>
> >> > +1. Based on some large scale tests with bits very close to RC5. Found
> >> two
> >
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Stack 2013-10-17, 21:31
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Stack 2013-10-18, 21:43
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Stack 2013-10-19, 03:33
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Dave Wang 2013-10-19, 04:19
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Andrew Purtell 2013-10-20, 19:01