Nice job everyone.
On Sat, Oct 19, 2013 at 1:31 PM, Dave Wang <[email protected]> wrote: > Congratulations everyone! > > - Dave > > On Saturday, October 19, 2013, Stack wrote: > >> hbase-0.96.0 is now available for download [0]. >> >> Apache HBase is a scalable, distributed data store that runs atop Apache >> Hadoop. >> >> The hbase-0.96.0 release has been more than a year in the making and >> supplants our long-running 0.94.x series of releases. We encourage users >> upgrade. >> >> More than 2k issues [1][2][3][4] are attributed to this version (counting >> fixes done against this and the preview 0.95.x developer series of >> releases). [7] is the total list of 0.96.0 changes. 1500+ of these changes >> are in 0.96.0 alone; i.e. they have not been backported. At the end of >> this note is a sampling of some notable fixes. >> >> High-level, the big themes driving this release have been improved >> stability, operability, scaling fixes, and making it so we are in a >> situation where we are free to evolve going forward while all the time >> maintaining forward and backward compatibility. A bunch of work has been >> done to improve Mean Time To Recovery on server and node crash. Everywhere >> HBase persists has been moved to protobufs [8] including what we write >> across the wire RPC'ing. We have a new balancer, call tracing, namespaces, >> revamped metrics, hardened replication and assignment, client-side types >> and mountains more of new utility and improvements. >> >> hbase-0.96.0 comes in two flavors; a build that includes and runs on >> hadoop-1.x >> and another for hadoop-2.x. You must chose the hbase that suits your >> hadoopcontext. You will need to restart your cluster on deploy. On >> restart, >> HBase will run a few migration tasks that will complete in seconds, and off >> you go again. hbase-0.94.x clients will not be able to talk to a 0.96.x >> cluster. See '3. Upgrading' [5] section in the reference guide for notes on >> upgrading and section '3.2. Upgrading from 0.94.x to 0.96.x' [6] in >> particular. Downstream projects should notice very minor -- if any -- >> changes in API. >> >> Thanks to legion who contributed to this release. >> >> At your service, >> The HBase dev team >> >> This release is dedicated to Shaneal Manek, HBase contributor. >> >> 0. http://www.apache.org/dyn/closer.cgi/hbase/ >> 1. 0.96.0 http://goo.gl/yp74gU >> 2. 0.95.2 340 issues http://goo.gl/4djjE9 >> 3. 0.95.1 265 issues http://goo.gl/TcdckW >> 4. 0.95.0 1263 issues http://goo.gl/Iqcx2i >> 5. http://hbase.apache.org/book.html#upgrading >> 6. http://hbase.apache.org/book.html#upgrade0.96 >> 7. http://goo.gl/NKoDqp >> 8. https://code.google.com/p/protobuf/ >> >> >> SAMPLE FROM RELEASE NOTES >> >> HBASE-7331 HBASE-6096 Add access control for region open and close, row >> locking, and stopping the regionserver >> HBASE-7678 HBASE-7667 make storefile management pluggable, together with >> compaction >> HBASE-8015 Support for Namespaces >> HBASE-5335 Dynamic Schema Configurations >> HBASE-5939 Add an autorestart option in the start scripts >> HBASE-2214 Do HBASE-1996 -- setting size to return in scan rather than >> count of rows -- properly >> HBASE-9505 Enable replication by default >> HBASE-8766 HBASE-6814 [WINDOWS] bin/hbase.cmd zkcli is broken >> HBASE-4657 Improve the efficiency of our MR jobs with a few configurations >> HBASE-6659 Port HBASE-6508 Filter out edits at log split time >> HBASE-6055 Offline Snapshots in HBase 0.96 >> HBASE-7567 [replication] Create an interface for replication peers >> HBASE-5305 Improve cross-version compatibility & upgradeability >> HBASE-9152 Not able to find HMaster and HRegionServer processes with grep >> by process name on ps result because of large classpath as argument. >> HBASE-8778 Region assigments scan table directory making them slow for huge >> tables >> HBASE-7721 Atomic multi-row mutations in META >> HBASE-7007 [MTTR] Study assigns to see if we can make them faster still >> HBASE-7845 optimize hfile index key >> HBASE-7533 HBASE-7898 Write an RPC Specification for 0.96 >> HBASE-6553 Remove Avro Gateway >> HBASE-8505 References to split daughters should not be deleted separately >> from parent META entry >> HBASE-50 Snapshot of table >> HBASE-8214 Remove proxy and engine, rely directly on pb generated Service >> HBASE-5844 Delete the region servers znode after a regions server crash >> HBASE-7315 HBASE-7263 Remove support for client-side RowLocks >> HBASE-6135 Style the Web UI to use Twitter's Bootstrap. >> HBASE-4676 Prefix Compression - Trie data block encoding >> HBASE-6295 Possible performance improvement in client batch operations: >> presplit and send in background >> HBASE-4403 Adopt interface stability/audience classifications from Hadoop >> HBASE-7008 Set scanner caching to a better default, disable Nagles >> HBASE-7942 HBASE-4755 Make use of the plumbing in HBASE-7932 to provide >> location hints when region files are created >> HBASE-7835 HBASE-7006 Implementation of the log splitting without creating >> intermediate files >> HBASE-8334 Enable essential column family support by default >> HBASE-6849 Make StochasticLoadBalancer the default >> HBASE-6066 HBASE-6922 some low hanging read path improvement ideas >> HBASE-5074 support checksums in HBase block cache >> HBASE-7351 Periodic health check chore >> HBASE-5887 Make TestAcidGuarantees usable for system testing. >> HBASE-6783 Make read short circuit the default >> HBASE-9529 HBASE-9495 Audit of hbase-client @InterfaceAudience.Public apis >> HBASE-6435 Reading WAL files after a recovery leads to time lost in >> HDFStimeouts when using dead >> datanodes >> HBASE-6206 HBASE-6182 Large tests fail with jdk1.7 >> HBASE-9208 ReplicationLogCleaner slow at large scale >> HBASE-5533 Add more metrics to HBase >> HBASE-7306 HBASE-781 [shell] Count shell command to return ruby >> bindablevalue. >> HBASE-7110 refactor the compaction selection and config code similarly to >> 0.89-fb changes >> HBASE-7603 HBASE-7519 refactor storefile management in HStore in order to >> support things like LevelDB-style compactions >> HBASE-8693 HBASE-8089 DataType: provide extensible type API >> HBASE-7932 HBASE-4755 Do the necessary plumbing for the region locations in >> META table and send the info to the RegionServers >> HBASE-6241 HBASE-6201 HBaseCluster interface for interacting with the >> cluster from system tests >> HBASE-8219 Align Offline Merge with Online Merge >> HBASE-9523 HBASE-9495 Audit of hbase-common @InterfaceAudience.Public apis. >> HBASE-8813 Fix time b/w recoverLease invocations from HBASE 8449 >> HBASE-7290 Online snapshots >> HBASE-8450 Update hbase-default.xml and general recommendations to better >> suit current hw, h2, experience, etc. >> HBASE-8201 HBASE-8089 OrderedBytes: an ordered encoding strategy >> HBASE-8877 Reentrant row locks >> HBASE-4393 Implement a canary monitoring program >> HBASE-4050 Update HBase metrics framework to metrics2 framework >> HBASE-4391 Add ability to start RS as root and call mlockall >> HBASE-5924 In the client code, don't wait for all the requests to be >> executed before resubmitting a request in error. >> HBASE-7305 ZK based Read/Write locks for table operations >> HBASE-5705 HBASE-5305 Introduce Protocol Buffer RPC engine >> HBASE-5838 Add an LZ4 compression option to HFile >> HBASE-7404 Bucket Cache:A solution about CMS,Heap Fragment and Big Cache on >> HBASE >> HBASE-7590 Add a costless notifications mechanism from master to >> regionservers & clients >> HBASE-9203 Secondary index support through coprocessors >> HBASE-9121 Update HTrace to 2.00 and add new example usage. >>
