I'm obviously +1 @Todd, that's the plan https://issues.apache.org/jira/browse/HBASE-2233
J-D On Thu, Mar 18, 2010 at 11:32 AM, Todd Lipcon <t...@cloudera.com> wrote: > +1 from me. > > To help out the guys who are already running on unreleased Hadoop, would it > be possible to build a simple shim layer that would allow it to work with > either? We did this in Hive and it seems to be working well (few complaints > so far) > > -Todd > > On Thu, Mar 18, 2010 at 11:28 AM, Stack <st...@duboce.net> wrote: > >> Unless there is objection, in the next day or so, I'd like to revert >> the hadoop that is in hbase trunk and replace it with hadoop 0.20.2. >> Currently hbase trunk bundles the head of the 0.21 hadoop branch and >> will only run atop an hadoop built out of this hadoop 0.21 branch. >> >> Since the plan is that the next release of hbase will run on hadoop >> 0.20.x and the major hadoop release that follows hadoop 0.20 -- 0.21 >> or 0.22, its version is still TBD -- AND given that the next major >> hadoop release would seem to be a few months out, having our trunk >> bundle hadoop 0.21 unnecessarily constrains where current hbase trunk >> can run. >> >> Even though the bundled hadoop 0.21 has the critical hdfs-265 working >> flush/sync feature, its looking like hard work by the fellas who are >> on the hdfs-200, hdfs-862 and hdfs-142 patchset will likely get us >> data durability on a (patched) hadoop 0.20.x some time soon. Having >> hbase trunk so it can work on the patched hadoop 0.20.x will help the >> testing of the data durability effort. >> >> Jean-Daniel, Ryan, and I have already had a pow-wow about this and >> think this is the way to go for now (The revert notion was originally >> Ryans -- See HBASE-2255). >> >> If you've been running hbase TRUNK and an hadoop 0.21, unfortunately, >> this means that you'll need to copy your data out of your cluster, do >> the downgrade, and then copy your data back in. If you need help with >> this effort, give us a shout and we'll help you out. >> >> Thanks, >> St.Ack >> > > > > -- > Todd Lipcon > Software Engineer, Cloudera >
