Hi Glad to be informed . Are there any CHANGES docs about the HBase-0.98 ?
Regards 2014-02-17 9:48 GMT+08:00 Andrew Purtell <[email protected]>: > hbase-0.98.0 is now available for download [0] from the Apache mirrors and > its artifacts are available in the Apache Maven repository. > > Apache HBase is a scalable, distributed data store that runs atop Apache > Hadoop. > > HBase 0.98.0 is the next major release after HBase 0.96. > > This release includes several new security features like cell visibility > labels, cell ACLs, and transparent server side encryption. Please see the > Security section of the HBase Online Manual [1] for more information. There > are significant performance improvements, such as a change to the write > ahead log threading model that provides higher transaction throughput under > high load, reverse scanners, MapReduce over snapshot files, and striped > compaction. The complete list of changes in this release can be found in > the release notes. [2] > > HBase 0.98 is expected to be wire compatible with HBase 0.96, so clients > and servers mixed between these versions will seamlessly interoperate, > provided new features available in 0.98 are not enabled. However, the HBase > 0.98.0 release is not intended to be binary compatible at the Java API > level with any HBase 0.96 release or earlier. You may need to recompile > applications which reference the HBase JARs. Users of HBase 0.94 will have > to perform an offline data migration procedure during upgrade. Consult the > HBase Online Manual [1] for more information. It is not necessary to > migrate data from 0.94 to 0.98 through 0.96, you can upgrade from 0.94 to > 0.98 directly if desired following the same procedure for upgrading from > 0.94 to 0.96. > > Thanks to all who contributed to this release. > > At your service, > The HBase dev team > > 0. http://www.apache.org/dyn/closer.cgi/hbase/ > 1. https://hbase.apache.org/book/book.html > 2. http://goo.gl/y25W2h >
