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Posted to dev@hbase.apache.org by Enis Söztutar <en...@apache.org> on 2014/12/20 00:13:43 UTC
First release candidate for HBase 1.0.0 (RC0) is available. Please
vote by 02/01/2015
I gives me great pleasure to announce that the first release candidate for
the release
1.0.0 (HBase-1.0.0RC0), is available for download at
https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC0/
Maven artifacts are also available in the temporary repository
https://repository.apache.org/content/repositories/orgapachehbase-1052
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=5bf3eee0c072a4b91124b5f9c910391d91f501ad
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 70+ fixes on top of 0.99.2 release (note that all
0.99.x
releases are developer preview releases, and will not be supported in any
form).
Together with the previous 0.99.x releases, major changes in 1.0.0 are
listed (but not limited to) below.
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
- 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.
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 02/01/2015 11:59PM PDT.
Due to the importance of 1.0 release, and upcoming holidays 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
Re: First release candidate for HBase 1.0.0 (RC0) is available.
Please vote by 02/01/2015
Posted by Enis Söztutar <en...@gmail.com>.
Nice finding. This (and maybe HBASE-12743
<https://issues.apache.org/jira/browse/HBASE-12743>), sinks the RC. Will
do another one next week.
Enis
On Mon, Dec 22, 2014 at 4:31 PM, Stack <st...@duboce.net> wrote:
>
> -1 Distributed Log Replay is on by default when we wanted it off by default
> (Besides, DLR seems a little unreliable). See HBASE-12746.
> St.Ack
>
> On Fri, Dec 19, 2014 at 3:13 PM, Enis Söztutar <en...@apache.org> wrote:
>
> > I gives me great pleasure to announce that the first release candidate
> for
> > the release
> > 1.0.0 (HBase-1.0.0RC0), is available for download at
> > https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC0/
> >
> > Maven artifacts are also available in the temporary repository
> > https://repository.apache.org/content/repositories/orgapachehbase-1052
> >
> > 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=5bf3eee0c072a4b91124b5f9c910391d91f501ad
> >
> > 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 70+ fixes on top of 0.99.2 release (note that all
> > 0.99.x
> > releases are developer preview releases, and will not be supported in any
> > form).
> > Together with the previous 0.99.x releases, major changes in 1.0.0 are
> > listed (but not limited to) below.
> >
> > 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
> > - 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.
> >
> > 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 02/01/2015 11:59PM PDT.
> > Due to the importance of 1.0 release, and upcoming holidays 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
> >
>
Re: First release candidate for HBase 1.0.0 (RC0) is available.
Please vote by 02/01/2015
Posted by Stack <st...@duboce.net>.
-1 Distributed Log Replay is on by default when we wanted it off by default
(Besides, DLR seems a little unreliable). See HBASE-12746.
St.Ack
On Fri, Dec 19, 2014 at 3:13 PM, Enis Söztutar <en...@apache.org> wrote:
> I gives me great pleasure to announce that the first release candidate for
> the release
> 1.0.0 (HBase-1.0.0RC0), is available for download at
> https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC0/
>
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1052
>
> 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=5bf3eee0c072a4b91124b5f9c910391d91f501ad
>
> 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 70+ fixes on top of 0.99.2 release (note that all
> 0.99.x
> releases are developer preview releases, and will not be supported in any
> form).
> Together with the previous 0.99.x releases, major changes in 1.0.0 are
> listed (but not limited to) below.
>
> 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
> - 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.
>
> 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 02/01/2015 11:59PM PDT.
> Due to the importance of 1.0 release, and upcoming holidays 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
>
Re: First release candidate for HBase 1.0.0 (RC0) is available.
Please vote by 02/01/2015
Posted by Enis Söztutar <en...@apache.org>.
Yes, I've seen that jira. Depending on the outcome there, we can decide to
sink this RC or continue with the release.
The closing date for the vote is Jan 2nd. Thanks for the correction.
Enis
On Fri, Dec 19, 2014 at 3:18 PM, Ted Yu <yu...@gmail.com> wrote:
>
> Enis:
> Have you seen discussion around HBASE-12728 ?
> See this thread: http://search-hadoop.com/m/DHED4cx7bL
>
> BTW the closing date is Jan. 2nd 2015 (not Feb 1st), right ?
>
> Cheers
>
> On Fri, Dec 19, 2014 at 3:13 PM, Enis Söztutar <en...@apache.org> wrote:
>
> > I gives me great pleasure to announce that the first release candidate
> for
> > the release
> > 1.0.0 (HBase-1.0.0RC0), is available for download at
> > https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC0/
> >
> > Maven artifacts are also available in the temporary repository
> > https://repository.apache.org/content/repositories/orgapachehbase-1052
> >
> > 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=5bf3eee0c072a4b91124b5f9c910391d91f501ad
> >
> > 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 70+ fixes on top of 0.99.2 release (note that all
> > 0.99.x
> > releases are developer preview releases, and will not be supported in any
> > form).
> > Together with the previous 0.99.x releases, major changes in 1.0.0 are
> > listed (but not limited to) below.
> >
> > 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
> > - 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.
> >
> > 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 02/01/2015 11:59PM PDT.
> > Due to the importance of 1.0 release, and upcoming holidays 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
> >
>
Re: First release candidate for HBase 1.0.0 (RC0) is available.
Please vote by 02/01/2015
Posted by Ted Yu <yu...@gmail.com>.
Enis:
Have you seen discussion around HBASE-12728 ?
See this thread: http://search-hadoop.com/m/DHED4cx7bL
BTW the closing date is Jan. 2nd 2015 (not Feb 1st), right ?
Cheers
On Fri, Dec 19, 2014 at 3:13 PM, Enis Söztutar <en...@apache.org> wrote:
> I gives me great pleasure to announce that the first release candidate for
> the release
> 1.0.0 (HBase-1.0.0RC0), is available for download at
> https://dist.apache.org/repos/dist/dev/hbase/hbase-1.0.0RC0/
>
> Maven artifacts are also available in the temporary repository
> https://repository.apache.org/content/repositories/orgapachehbase-1052
>
> 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=5bf3eee0c072a4b91124b5f9c910391d91f501ad
>
> 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 70+ fixes on top of 0.99.2 release (note that all
> 0.99.x
> releases are developer preview releases, and will not be supported in any
> form).
> Together with the previous 0.99.x releases, major changes in 1.0.0 are
> listed (but not limited to) below.
>
> 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
> - 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.
>
> 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 02/01/2015 11:59PM PDT.
> Due to the importance of 1.0 release, and upcoming holidays 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
>