Thank you for the notification. Trying to back port bug fixes. - Tsuyoshi
On Wed, Jul 15, 2015 at 3:45 AM, Sean Busbey <bus...@cloudera.com> wrote: > Hi Hadoopers! > > Over in HBase we've been discussing the impact of our dependencies on our > downstream users. As our most fundamental dependency, Hadoop plays a big > role in the operational cost of running an HBase instance. > > Currently the HBase 1.y release line supports Hadoop 2.4, 2.5, and 2.6[1]. > We don't drop Hadoop minor release lines in minor releases so we are > unlikely remove anything from this set until HBase 2.0, probably at the end > of 2015 / start of 2016 (and currently we plan to continue supporting at > least 2.4 for HBase 2.0 [2]). Lately we've been discussing updating our > shipped binaries to Hadoop 2.6, following some stability testing by part of > our community[3]. Unfortunately, 2.6.0 in particular has a couple of bugs > that could destroy HBase clusters should users decide to turn on HDFS > encryption[4]. Our installation instructions tell folks to replace these > jars with the version of Hadoop they are actually running, but not all > users follow those instructions so we want to minimize the pain for them. > > Regular maintenance releases are key to keeping operational burdens low for > our downstream users; we don't want them to be forced to choose between > living with broken systems and stomaching the risk of upgrades across > minor/major version numbers. Looking back over the three aforementioned > Hadoop versions, 2.6 hasn't had a patch release since 2.6.0 came out in Nov > 2014, when 2.5 had its last patch release as well. Hadoop 2.4 looks to be a > year without a release[5]. On our discussion of shipping Hadoop 2.6 > binaries, one of your PMC members mentioned that with continued work on the > 2.7 line y'all weren't planning any additional releases of the earlier > minor versions[6]. > > The HBase community requests that Hadoop pick up making bug-fix-only patch > releases again on a regular schedule[7]. Preferably on the 2.6 line and > preferably monthly. We realize that given the time gap since 2.6.0 it will > likely take a big to get 2.6.1 together, but after that it should take much > less effort to continue. > > [1]: http://hbase.apache.org/book.html#hadoop > [2]: http://s.apache.org/ReP > [3]: HBASE-13339 > [4]: HADOOP-11674 and HADOOP-11710 > [5]: http://hadoop.apache.org/releases.html > [6]: http://s.apache.org/MTY > [7]: http://s.apache.org/ViP > > -- > Sean
