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From Ted Yu <yuzhih...@gmail.com>
Subject Re: First release candidate for HBase 0.99.2 (RC0) is available. Please vote by 12/06/2014
Date Wed, 03 Dec 2014 15:44:38 GMT
Compiling Phoenix master against 0.99.2, I got:
http://pastebin.com/gaxCs8fT

Some removed methods are in HBase classes that are marked
with @InterfaceAudience.Private
I want to get some opinion on whether such methods should be deprecated
first.

Cheers

On Tue, Dec 2, 2014 at 10:28 PM, Enis Söztutar <enis@apache.org> wrote:

> First release candidate for HBase 0.99.2 (RC0) is available. Please vote by
> 12/06/2014
>
> The first release candidate for the third release from branch-1, HBase
> 0.99.2 RC0, is
> available for download at https://people.apache.org/~enis/hbase-0.99.2RC0/
>
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1048/
>
> Signed with my code signing key E964B5FF. Can be found here:
> https://people.apache.org/keys/committer/enis.asc
>
> Signed tag in the repository can be found here:
>
> https://git-wip-us.apache.org/repos/asf?p=hbase.git;a=tag;h=080ab7230847776b7a2867dcbd3d421969d2dd37
>
> NOTE IN GIGANTIC LETTERS THAT THIS IS A DEVELOPER RELEASE.
> DO NOT USE THIS RELEASE IN PRODUCTION.
>
> HBase 0.99.2 is a "developer preview" release, and an odd-numbered release
> as
> defined in  https://hbase.apache.org/book/upgrading.html#hbase.versioning.
> This release IS NOT intended for production use, and does not contain any
> backwards or forwards compatibility guarantees (even within minor versions
> 0.99.x). Please refrain from deploying this over important data.
>
> 0.99.2 release is provided from branch-1, which will be the basis for
> HBase-1.0
> release. This is the last planned 0.99.x release before 1.0. The reason for
> doing a developer preview release is to get more testing for the branch-1
> code
> that will be released soon as HBase-1.0.0. Thus, all contribution in terms
> of
> testing, benchmarking, checking API / source /wire compatibility, checking
> out
> documentation and further code contribution is highly appreciated. 1.0 will
> be
> the first series in the 1.x line of releases which are expected to keep
> compatibility with previous 1.x releases. Thus it is very important to
> check
> the client side and server side APIs for compatibility and maintainability
> concerns for future releases.
>
> 0.99.2 builds on top of all the changes that is in the 0.99.0 (an overview
> can be found at [1]) and 0.99.1 releases[2]. The theme of (eventual) 1.0
> release is to become a stable base for future 1.x series of releases. 1.0
> release will aim to achieve at least the same level of stability of 0.98
> releases without introducing too many new features.
>
> The work to clearly mark and differentiate client facing  APIs, and
> redefine
> some of the client interfaces for improving semantics, easy of use and
> maintainability has continued in 0.99.2 release. Marking/remarking of
> interfaces with InterfaceAudience has also been going on (HBASE-10462),
> which will identify areas for compatibility (with clients, coprocessors
> and dependent projects like Phoenix) for future releases.
>
> 0.99.2 contains 190 issues fixed on top of 0.99.1. Some other notable
> improvements
> in this release are
>  - [HBASE-12075] - Preemptive Fast Fail
>  - [HBASE-12147] - Porting Online Config Change from 89-fb
>  - [HBASE-12354] - Update dependencies in time for 1.0 release
>  - [HBASE-12363] - Improve how KEEP_DELETED_CELLS works with MIN_VERSIONS
>  - [HBASE-12434] - Add a command to compact all the regions in a
> regionserver
>  - [HBASE-8707] - Add LongComparator for filter
>  - [HBASE-12286] - [shell] Add server/cluster online load of configuration
> changes
>  - [HBASE-12361] - Show data locality of region in table page
>  - [HBASE-12496] - A blockedRequestsCount metric
>  - Switch to using new style of client APIs internally (in a lot of places)
>  - Improvements in visibility labels
>  - Perf improvements
>  - Some more documentation improvements
>  - Numerous improvements in other areas and bug fixes.
>
> The release has these changes in default behavior (from 0.99.1):
>  - Disabled the "Distributed Log Replay" feature by default. Similar to
> 0.98
>   and earlier releases "Distributed Log Split" is the default.
>
>
> Thanks for everybody who have contributed to this release. Full list of the
> issues
> can be found here:
>
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12328822
>
>
> Compatibility
> -------------
> 0.99.x series of releases are preview of upcoming 1.0 release. HBase-1.0 is
> planned to be wire compatible with 0.98.x releases. Clients and
> servers running in different versions as long as new features are not used
> should be possible.
> A rolling upgrade from 0.98.x clusters to 0.99.2 is supported as well.
> 0.99.2
> introduces a new file format (hfile v3) that is enabled by default that
> 0.96.x code cannot read. Thus, rolling upgrade from 0.96 directly to 0.99
> is
> not supported.
>
> Direct migration from 0.94.x, 0.96.x and 0.98.x is also supported but it IS
> NOT
> tested extensively. Before HBase-1.0 we expect to complete the tests.
>
> Binary compatibility at the Java API layer with earlier versions (0.98.x,
> 0.96.x and 0.94.x) is not supported. You may have to recompile your client
> code and any server side code (coprocessors, filters etc) referring to
> hbase jars.
>
> 0.99.x release introduces new APIs, and deprecates some of commonly-used
> client side APIs (HTableInterface, etc). However, client side code is
> expected
> to be source compatible with earlier versions. However we advise to update
> your application to use the new style of APIs, since deprecated APIs might
> be removed in future releases (2.x).
>
>
> Supported Hadoop versions
> -------------------------
> 0.99.x releases drop support for Hadoop-1.x releases. Only Hadoop-2.x
> releases are supported. Hadoop-2.4.x and Hadoop-2.5.x releases are the
> most tested hadoop releases and we recommend running with those versions
> (or later versions). Earlier Hadoop-2 based releases (hadoop-2.2.x and
> 2.3.x)
> are not tested to the full extend. More information can be found here:
> https://hbase.apache.org/book/configuration.html#hadoop
>
>
> Supported Java versions
> -------------------------
> 0.99.x releases drop support for JDK6. Only JDK7 is supported. JDK8 support
> is experimental. More information can be found here:
> https://hbase.apache.org/book/configuration.html#java
>
>
> Voting
> ------
> Please try to test and vote on this release by 12/06/2014 11:59PM PDT.
> This is a developer (beta) release, so we have a shorter vote time.
> [] +1 Release the artifacts as 0.99.2
> [] -1 DO NOT release the artifacts as 0.99.2, because...
>
> Thanks for helping to get a stable release out!
>
> References
> ----------
> [1]
>
> https://mail-archives.apache.org/mod_mbox/hbase-dev/201409.mbox/%3CCAMUu0w94oARqcz2zY4ZLqy_AaqN70whhH1yCS_0BjPSEeEcM-w@mail.gmail.com%3E
> [2]
>
> https://mail-archives.apache.org/mod_mbox/hbase-dev/201409.mbox/%3CCAMUu0w9Y_+Afw6wW0hA_P8KBEW35B3ncsHbUQAcfndzs8TcMyA@mail.gmail.com%3E
>
> Enis
>

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