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From Enis Söztutar <e...@apache.org>
Subject Re: Second release candidate for HBase 1.0.0 (RC1) is available. Please vote by Feb 08 2015
Date Mon, 26 Jan 2015 08:27:22 GMT
I'll spin a new one tomorrow.

Enis

On Mon, Jan 26, 2015 at 12:26 AM, Enis Söztutar <enis@apache.org> wrote:

> Sigh. Consider this RC in the bottom of the ocean.
>
> See
>  https://issues.apache.org/jira/browse/HBASE-12919
>
> Enis
>
> On Mon, Jan 26, 2015 at 12:11 AM, Enis Söztutar <enis@apache.org> wrote:
>
>> I gives me great pleasure to announce that the second release candidate
>> for the release
>> 1.0.0 (HBase-1.0.0RC1), is available for download at
>> https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC1/
>>
>> Maven artifacts are also available in the temporary repository
>> https://repository.apache.org/content/repositories/orgapachehbase-1056
>>
>> 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=46edac369542227e23c6e0b5edfe3aa68ca264a3
>>
>> 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
>> series
>> of releases. We aim to achieve at least the same level of stability of
>> 0.98
>> releases.
>>
>> 1.0.0 release contains 155 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 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, since
>>   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
>> shared 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
>> the same
>>   data files. Read requests can be done against any replica for the
>> region 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
>> the
>>   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-cluster
>>    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
>> creation 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
>> Server
>>  - [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
>> configuration 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
>> removal 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
>> for
>>    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
>> places)
>>  - Improvements in visibility labels
>>  - Perf improvements
>>  - Numerous improvements in other areas and bug fixes.
>>
>> 1.0.0 release has these changes in default behaviour (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
>> 160XX 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
>> physical
>>    memory
>>  - Some client facing APIs (HTableInterface, etc) has been deprecated and
>>    replaced.
>>  - Custom Filter implementations should switch to using the new
>> recommended 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=12310753&version=12325852
>>  - 0.99.2 issues :
>> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12325675
>>  - 0.99.1 issues :
>> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12328551
>>  - 0.99.0 issues :
>> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12328822
>>
>> Compatibility
>> -------------
>> Source Compatibility:
>> Client side code in HBase-1.0.0 is (mostly) source compatible with earlier
>> 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 used
>> 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 client
>> 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
>> restart 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 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 Feb 08 2015 11:59PM PDT.
>> Due to the importance of 1.0 release we will have a 2 week voting period
>> to cover sufficient testing. Please notify here if you need more time to
>> test the RC.
>>
>> [] +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 from
>> committers and contributors. We would like to extend our thanks to
>> everybody
>> who worked on this release or contibuted 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
>>
>
>

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