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From Stack <st...@duboce.net>
Subject Re: First release candidate for HBase 0.99.1 (RC0) is available. Please vote by 10/15/2014
Date Mon, 13 Oct 2014 02:06:45 GMT
Thanks for doing this Enis


Checked sigs and md5s on src and bin.

Undid the bin and took a looksee at doc.

Started it up in standalone.  Loaded up a few million rows.  Verified them
present.  Browsed UI.

Undid src bundle on a cluster.  Changed hadoop version to 2.6-SNAPSHOT and
built.  Distributed around the cluster.  Started it over an old dataset.
Seems to come up fine.

I'll do more testing over next few days but bundle is good enough to go out
as a dev release IMO.


On Sun, Oct 12, 2014 at 1:53 AM, Enis Söztutar <enis@apache.org> wrote:

> The first release candidate for the second release from branch-1, HBase
> 0.99.1 RC0, is
> available for download at https://people.apache.org/~enis/hbase-0.99.1RC0/
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1043/
> 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=1563ccf209d4352a40ddd229d8264d7bfee1904e
> HBase 0.99.1 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.
> 0.99.1 release is provided from branch-1, which will be the basis for
> HBase-1.0
> release. A few 0.99.x releases are planned 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.
> 0.99.1 builds on top of all the changes that is in the 0.99.0 release (an
> overview can be found at [1]). 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 0.99.1 release. Remaining work can
> be found in HBASE-10602. Marking/remarking of interfaces with
> InterfaceAudience
> has also been going on, which will identify areas for compatibility (with
> clients, coprocessors and dependent projects like Phoenix) for future
> releases.
> 0.99.1 changes some of the behavior for master / region colocation that was
> introduced in 0.99.0 (see [1]). Now, the backup masters can no longer host
> any regions. And active master can host regions of defined tables if
> configured. Otherwise, it will not show up the region server UI similar to
> a 0.98 deployment. Though master and region server still shares the same
> rpc
> ports. Details can be found here (HBASE-12034 and HBASE-10569).
> Some other notable improvements in this release are
>  - [HBASE-11178] - Remove deprecation annotations from mapred namespace
>  - [HBASE-11920] - Add CP hooks for ReplicationEndPoint
>  - [HBASE-11997] - CopyTable with bulkload
>  - [HBASE-12059] - Create hbase-annotations module
>  - [HBASE-11990] - Make setting the start and stop row for a specific
> prefix easier
>  - [HBASE-12220] - Add hedgedReads and hedgedReadWins metrics
>  - [HBASE-12090] - Bytes: more Unsafe, more Faster
>  - [HBASE-12032] - Script to stop regionservers via RPC
>  - [HBASE-11907] - Use the joni byte[] regex engine in place of j.u.regex
> in RegexStringComparator
>  - [HBASE-11796] - Add client support for atomic checkAndMutate
>  - [HBASE-11804] - Raise default heap size if unspecified
>  - [HBASE-11890] - HBase REST Client is hard coded to http protocol
>  - [HBASE-12126] - Region server coprocessor endpoint
>  - [HBASE-12183] - FuzzyRowFilter doesn't support reverse scans
>  - [HBASE-12197] - Move REST (create hbase-rest module)
>  - Continuation of the cell-based read / write pipeline work for
> performance boost
>  - Various fixes to REST server
>  - Some more documentation improvements
>  - Numerous improvements in other areas and bug fixes.
> The release has these changes in default behaviour:
>  - default heap for region servers (and master) is changed from 1GB to
>    the jdk's default. On most platforms, it will default to 1/4 of physical
>    memory
>  - mapred package and classes under there has been un-deprecated.
>  - two new modules (jar files): hbase-annotations and hbase-rest
>  - Slab cache has been removed (use bucket cache instead)
>  - Some more client API cleanup.
> 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=12328551
> 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 and 0.96.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 0.99.1 is supported as well.
> 0.99.1
> introduces a new file format (hfile v3) that is enabled by default that
> 0.96.x code cannot read. Rolling upgrade from 0.96 directly to 0.99 is not
> tested.
> Direct migration from 0.94.x is also supported but it IS NOT tested. Before
> HBase-1.0 we expect to complete the test.
> 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.
> 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 10/14/2014 11:59PM PDT.
> This is a developer (beta) release, so we have a shorter vote time.
> [] +1 Release the artifacts as 0.99.1
> [] -1 DO NOT release the artifacts as 0.99.1, because...
> Thanks for helping to get a stable release out!
> References
> ----------
> [1]
> https://mail-archives.apache.org/mod_mbox/hbase-dev/201409.mbox/%3CCAMUu0w9Y_+Afw6wW0hA_P8KBEW35B3ncsHbUQAcfndzs8TcMyA@mail.gmail.com%3E
> Enis

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