PR is hard. We are engineers. Suggestions? On Tue, Feb 24, 2015 at 1:25 PM, Vladimir Rodionov <vladrodio...@gmail.com> wrote:
> Good: Impressive work. > > Bad: no adequate PR action yet. > > -Vlad > > On Tue, Feb 24, 2015 at 11:45 AM, lars hofhansl <la...@apache.org> wrote: > > > Hip hip, Hooray!! > > From: Enis Söztutar <e...@apache.org> > > To: hbase-user <u...@hbase.apache.org>; "dev@hbase.apache.org" < > > dev@hbase.apache.org> > > Sent: Tuesday, February 24, 2015 12:30 AM > > Subject: [ANNOUNCE] Apache HBase 1.0.0 is now available for download > > > > The HBase Team is pleased to announce the immediate release of HBase > 1.0.0. > > Download it from your favorite Apache mirror [1] or maven repository. > > > > HBase 1.0.0 is the next stable release, and the start of "semantic > > versioned" > > releases (See [2]). > > > > The 1.0.0 release has three goals: > > 1) to lay a stable foundation for future 1.x releases; > > 2) to stabilize running HBase cluster and its clients; and > > 3) make versioning and compatibility dimensions explicit > > > > Including previous (developer preview) 0.99.x releases, 1.0.0 contains > over > > 1500 > > jiras resolved on top of 0.98.0. Some of the major changes are: > > > > API reorganization and changes > > HBase’s client level API has evolved over the years. To simplify the > > semantics and to support and make it extensible and easier to use in > > the future, we revisited the API before 1.0. To that end, 1.0.0 > > introduces > > new APIs, and deprecates some of the 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 will be removed in future releases (2.x). See [3] and > [4] > > 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 > > (See “11.1.1. HBase API Surface” in the HBase Refguide[2] for more > > details > > on the Audience annotations) Going forward, all 1.x releases are > planned > > to > > be API compatible for classes annotated as client public. > > > > 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. > > > > 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. > > > > Other notable improvements in 1.0.0 are listed (but not limited to) > below: > > - A new web skin in time for 1.0 (http://hbase.apache.org) > > - [HBASE-5349] - Automatic tuning of global memstore and block cache > > sizes > > - Various security, tags and visibility labels improvements > > - Bucket cache improvements (usability and compressed data blocks) > > - [HBASE-11367] - A new pluggable replication endpoint to plug in to > > HBase's > > inter-cluster replication to replicate to a custom data store > > - [HBASE-11885] - A Dockerfile to easily build and run HBase from source > > - [HBASE-8332] - Truncate table command > > - [HBASE-11059] - 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-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-12126] - Region server coprocessor endpoint > > - [HBASE-12075] - Preemptive Fast Fail > > - [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 > > - [HBASE-10156][HBASE-8755] - Ring buffer based WAL improvements > > - [HBASE-9117] - Switch to using new style of client APIs internally > > - Perf improvements > > - Numerous improvements in other areas and bug fixes. > > > > 1.0.0 release has these changes in default behavior (see [4]) > > - [HBASE-12241] - Zookeeper 3.4.x is required > > - [HBASE-10781] - Hadoop-2.x is required > > - [HBASE-11666] - 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) > > - [HBASE-11804] - 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 > > - [HBASE-10602] - 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) > > - [HBASE-11178] - 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 [7] > > - 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 [5] 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 [6] 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 > > 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 at [8] > > > > > > Supported Java versions > > ---------------------------------- > > 1.0.0 release drops support for JDK6. Only JDK7 is supported. JDK8 > support > > is experimental. More information can be found at [9]. > > > > HBase-1.0.0 is marked as the current stable version, and we encourage all > > users > > to start using this version. > > > > Thanks to everybody who contributed to this release! > > > > Cheers, > > The HBase Team > > > > 1. http://www.apache.org/dyn/closer.cgi/hbase/ > > 2. https://hbase.apache.org/book/upgrading.html#hbase.versioning > > 3. http://www.slideshare.net/xefyr/apache-hbase-10-release > > 4. http://s.apache.org/hbase-1.0-api > > 5. https://hbase.apache.org/book/upgrade1.0.html#upgrade1.0.changes > > 6. https://hbase.apache.org/book/upgrade1.0.html#upgrade1.0.from.0.94 > > 7. https://htrace.incubator.apache.org/ > > 8. https://hbase.apache.org/book/configuration.html#hadoop > > 9. https://hbase.apache.org/book/configuration.html#java > > > > > > > -- Best regards, - Andy Problems worthy of attack prove their worth by hitting back. - Piet Hein (via Tom White)
