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 <e...@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 >
