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From: Andrew Purtell <apurtell@apache.org>
Date: Fri, 20 Feb 2015 16:22:05 -0800
Message-ID: 
 <CA+RK=_AfhuGyvHxYcH0RiSC3CdKXWKw1Xppuq=XJdf_2xiUOmA@mail.gmail.com>
Subject: Re: [VOTE] Sixth release candidate for HBase 1.0.0 (RC5) is
 available. Please vote by Feb 19 2015
To: "dev@hbase.apache.org" <dev@hbase.apache.org>
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+1

- Checked sums and signature
- Source and binary tarball layouts look ok
- Spot checked docs
- Built from source
- All unit tests pass (7u75)
- Most integration tests pass in the verification phase of hbase-it (I
failed to pass -DskipITs to the build),
except IntegrationTestIngestWithACL, which needs external configuration
anyway, and IntegrationTestLazyCfLoading, not enough to sink the RC
- Ran all-localhost LTT with 1M keys, no unusual messages in the logs


On Sat, Feb 14, 2015 at 9:55 PM, Enis S=C3=B6ztutar <enis@apache.org> wrote=
:

> It gives me great pleasure to announce that the sixth release candidate f=
or
> the release
> 1.0.0 (HBase-1.0.0RC5), is available for download at
> https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC5/
>
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1065
>
> 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=3Dhbase.git;a=3Dtag;h=3Dc466091=
2e9b46c917a9aba2106be4bf74182a764
>
> HBase 1.0.0 is the next stable release, and the start of "semantic
> versioned"
> releases (See [1]).
>
> The theme of 1.0.0 release is to become a stable base for future 1.x seri=
es
> of releases. We aim to achieve at least the same level of stability of 0.=
98
> releases.
>
> 1.0.0 release contains 202 fixes on top of 0.99.2 release. Together with
> the
> previous 0.99.x releases, major changes in 1.0.0 are listed (but not
> limited to)
> below. Note that all previous 0.99.x releases are developer preview
> releases, and will
> NOT be supported in any form.
>
> API Cleanup and changes
>   1.0.0 introduces new APIs, and deprecates some of commonly-used
>   client side APIs (HTableInterface, HTable and HBaseAdmin).
>   We advise to update your application to use the new style of APIs, sinc=
e
>   deprecated APIs might be removed in future releases (2.x). See [2] and
> [3]
>   for an overview of changes. All Client side API's are marked with
>   InterfaceAudience.Public class, indicating that the class/method is an
>   official "client API" for HBase. All 1.x releases are planned to be API
>   compatible for these classes. See [1] for an overview.
>
> Master runs a Region Server as well
>   Starting with 1.0.0, the HBase master server and backup master servers
> will
>   also act as a region server. RPC port and info port for web UI is share=
d
> for
>   the master and region server roles. Active master can host regions of
>   defined tables if configured (disabled by default). Backup masters will
> not
>   host regions.
>
> Read availability using timeline consistent region replicas
>   This release contains Phase 1 items for experimental "Read availability
> using
>   timeline consistent region replicas" feature. A region can be hosted in
>   multiple region servers in read-only mode. One of the replicas for the
> region
>   will be primary, accepting writes, and other replicas will be sharing t=
he
> same
>   data files. Read requests can be done against any replica for the regio=
n
> with
>   backup RPCs for high availability with timeline consistency guarantees.
> More
>   information can be found at HBASE-10070.
>
> Online config change and other forward ports from 0.89-fb branch
>   HBASE-12147 forward ported online config change which enables some of t=
he
>   configuration from the server to be reloaded without restarting the
> region
>   servers.
>
> Other notable improvements in 1.0.0 (including previous 0.99.x) are
>  - A new web skin in time for 1.0 (http://hbase.apache.org)
>  - Automatic tuning of global memstore and block cache sizes
>  - Various security, tags and visibility labels improvements
>  - Bucket cache improvements (usability and compressed data blocks)
>  - A new pluggable replication endpoint to plug in to HBase's inter-clust=
er
>    replication to replicate to a custom data store
>  - A Dockerfile to easily build and run HBase from source
>  - Truncate table command
>  - Region assignment to use hbase:meta table instead of zookeeper for
> faster
>    region assignment (disabled by default)
>  - Extensive documentation improvements
>  - [HBASE-12511] - namespace permissions - add support from table creatio=
n
> privilege in a namespace 'C'
>  - [HBASE-12568] - Adopt Semantic Versioning and document it in the book
>  - [HBASE-12640] - Add Thrift-over-HTTPS and doAs support for Thrift Serv=
er
>  - [HBASE-12651] - Backport HBASE-12559 'Provide LoadBalancer with online
> configuration capability' to branch-1
>  - [HBASE-10560] - Per cell TTLs
>  - [HBASE-11997] - CopyTable with bulkload
>  - [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-12075] - Preemptive Fast Fail
>  - [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 configuratio=
n
> changes
>  - [HBASE-12361] - Show data locality of region in table page
>   - [HBASE-12496] - A blockedRequestsCount metric
>  - [HBASE-12730] - Backport HBASE-5162 (Basic client pushback mechanism) =
to
> branch-1
>  - [HBASE-12731] - Heap occupancy based client pushback
>  - [HBASE-12728] - buffered writes substantially less useful after remova=
l
> of HTablePool
>  - [HBASE-5699] - Run with > 1 WAL in HRegionServer
>   - Various fixes to REST server
>  - Internal refactoring for abstracting away zookeeper usage
>  - Better support for Cell interface internally in read and write paths f=
or
>    better performance and flexibility
>  - Combining internal mvcc and seqId infrastructure
>  - Ring buffer based WAL improvements
>  - Switch to using new style of client APIs internally (in a lot of place=
s)
>  - Improvements in visibility labels
>  - Perf improvements
>  - Numerous improvements in other areas and bug fixes.
>
> 1.0.0 release has these changes in default behavior (see [4])
>   - Zookeeper 3.4.x is required
>  - Hadoop-2.x is required
>  - JDK-1.7 is required
>  - Default ports have changed from 600XX range into out of ephemeral 160X=
X
> range.
>  - Hfile version 3 has been enabled by default.
>  - Slab cache has been removed (use bucket cache instead)
>  - 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 physic=
al
>    memory
>  - Some client facing APIs (HTableInterface, etc) has been deprecated and
>    replaced.
>  - Custom Filter implementations should switch to using the new recommend=
ed
> APIs.
>  - Some authorization permissions (especially regarding namespaces) have
> been
>    changed (HBASE-12511, HBASE-8015)
>  - Mapred package and classes under there has been un-deprecated.
>   - Two new modules (jar files): hbase-annotations and hbase-rest.
>  - HTrace dependency is moved to the Apache artifacts (
> https://htrace.incubator.apache.org/)
>  - Various updates to dependency versions
>
> Full list of the issues can be found at:
>  - 1.0.0 issues  :
>
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=3D123107=
53&version=3D12325852
>  - 0.99.2 issues :
>
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=3D123107=
53&version=3D12325675
>  - 0.99.1 issues :
>
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=3D123107=
53&version=3D12328551
>  - 0.99.0 issues :
>
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=3D123107=
53&version=3D12328822
>
> Compatibility
> -------------
> Source Compatibility:
> Client side code in HBase-1.0.0 is (mostly) source compatible with earlie=
r
> versions. Some minor API changes might be needed from the client side.
>
>
> Wire Compatibility:
> HBase-1.0.0 release is wire compatible with 0.98.x releases. Clients and
> servers running in different versions as long as new features are not use=
d
> should be possible.
> A rolling upgrade from 0.98.x clusters to 1.0.0 is supported as well. 1.0=
.0
> 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 1.0.=
0
> is
> not supported.
> 1.0.0 is NOT wire compatible with earlier releases (0.94, etc).
>
> Binary Compatibility:
> 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 clien=
t
> code and any server side code (coprocessors, filters etc) referring to
> hbase jars.
>
> Upgrading
> ---------
> See [4] for upgrade instructions and extended discussion on the changes.
>
> From 0.98.x : Upgrade from 0.98.x in regular upgrade or rolling upgrade
> fashion
> is supported.
>
> From 0.96.x : Upgrade from 0.96.x is supported with a shutdown and restar=
t
> of
> the cluster.
>
> From 0.94.x : Upgrade from 0.94.x is supported similar to upgrade from
> 0.94 -> 0.96. The upgrade script should be run to rewrite cluster level
> metadata.
> See [5] for details.
>
>
> Supported Hadoop versions
> -------------------------
> 1.0.0 release drops support for Hadoop-1.x releases. Only Hadoop-2.x
> releases are supported. Hadoop-2.4.x, Hadoop-2.5.x and Hadoop-2.6.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
> -------------------------
> 1.0.0 release drops support for JDK6. Only JDK7 is supported. JDK8 suppor=
t
> 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 Feb 19 2015 11:59PM PDT.
> We will have a 5 day voting period because this is the sixth RC. Please t=
ry
> to
> spend some time for testing this important release.
>
> [] +1 Release the artifacts as 1.0.0
> [] -1 DO NOT release the artifacts as 1.0.0, because...
>
> Gratitute
> ---------
> Last but not least, 1.0.0 release has been in a long time making with
> contributions from a very large group of awesome people and hard work fro=
m
> committers and contributors. We would like to extend our thanks to
> everybody
> who worked on this release or contributed to HBase over the years.
>
>
> References
> ----------
> [1] https://hbase.apache.org/book/upgrading.html#hbase.versioning
> [2] http://www.slideshare.net/xefyr/apache-hbase-10-release
> [3] http://s.apache.org/hbase-1.0-api
> [4] https://hbase.apache.org/book/upgrade1.0.html#upgrade1.0.changes
> [5] https://hbase.apache.org/book/upgrade1.0.html#upgrade1.0.from.0.94
>
> Enis
>


--=20
Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)

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