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From Stack <st...@duboce.net>
Subject Re: The 3rd HBase 0.98.0 release candidate (RC2) is available for download
Date Wed, 12 Feb 2014 20:29:31 GMT
+1 (again).

Ran RC on the hadoop 2.3.0 RC under a load.  Seems fine (The httpserver
stuff is all good).

Ran asychbase test suite against the candidate.  It found a change in
semantics from 0.96 -- see tail of HBASE-10252 -- but I think we just doc
the new behavior and move on.

TSDB 2.0 seems to work fine too.  We just need to get hbase 0.96 reporting
hooked up again since 'new metrics' went in.


On Thu, Feb 6, 2014 at 6:14 PM, Andrew Purtell <apurtell@apache.org> wrote:

> The 3rd HBase 0.98.0 release candidate (RC2) is available for download at
> http://people.apache.org/~apurtell/0.98.0RC2/<
> http://people.apache.org/~apurtell/0.98.0RC1/>
> and
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1005<
> https://repository.apache.org/content/repositories/orgapachehbase-1003>
> Signed with my code signing key D5365CCD.
> HBase 0.98.0 is the next major release after HBase 0.96. It is expected to
> be wire compatible with HBase 0.96, so clients and servers mixed between
> these versions will seamlessly interoperate, provided new features
> available in 0.98 are not enabled. However, the HBase 0.98.0 release is not
> intended to be binary compatible at the Java API level with any HBase 0.96
> release or earlier. You may need to recompile applications which reference
> the HBase JARs. Users of HBase 0.94 will have to perform an offline data
> migration procedure during upgrade. Consult the HBase Online Manual for
> more information. It is not necessary to migrate data from 0.94 to 0.98
> through 0.96, you can upgrade from 0.94 to 0.98 directly if desired
> following the same procedure for upgrading from 0.94 to 0.96.
> This release includes several new security features like per-cell
> visibility labels, per-cell ACLs, transparent encryption, and related
> changes to the coprocessor framework. Please see the Security section of
> the HBase Online Manual for more information. There are significant
> performance improvements, such as a change to the write ahead log (WAL)
> threading model that provides higher transaction throughput under high
> load, reverse scanners, MapReduce over snapshot files, and striped
> compaction. The list of changes in this release can be found here:
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12323143
> Please try out the candidate and vote +1/-1 by midnight Pacific Time (00:00
> -0800 GMT) on February 13 on whether or not we should release this as
> 0.98.0.
> --
> Best regards,
>    - Andy
> Problems worthy of attack prove their worth by hitting back. - Piet Hein
> (via Tom White)

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