Here is some more background information from https://issues.apache.org/jira/browse/HBASE-6962 :
hadoop 1.1 release annoucement: http://search-hadoop.com/m/0eTo41c8GSb The thinking behind new recommendation is that future patches for reducing MTTR may depend on the improvement unique to hadoop 1.1 (absent from hadoop 1.0.4) For reference, here is list of incompatible changes between hadoop 1.0 and 1.1: HDFS-2617 <https://issues.apache.org/jira/browse/HDFS-2617>. Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution. (Jakob Homan, Owen O'Malley, Alejandro Abdelnur and Aaron T. Myers via atm) HDFS-3044 <https://issues.apache.org/jira/browse/HDFS-3044>. fsck move should be non-destructive by default. (Colin Patrick McCabe via eli) HADOOP-8230 <https://issues.apache.org/jira/browse/HADOOP-8230>. Enable sync by default and disable append. (eli) HADOOP-8365 <https://issues.apache.org/jira/browse/HADOOP-8365>. Provide ability to disable working sync. (eli) HADOOP-8552 <https://issues.apache.org/jira/browse/HADOOP-8552>. Conflict: Same security.log.file for multiple users. (kkambatl via tucu) Cheers On Fri, Oct 19, 2012 at 8:50 AM, Jean-Daniel Cryans <[email protected]>wrote: > Pardon my lack of knowledge, is 1.1 wire compatible with 1.0? If can > just drop a 1.1 client on top of 1.0 (any 1.0), and it's tested, then > I would be +1. > > J-D > > On Thu, Oct 18, 2012 at 10:39 PM, lars hofhansl <[email protected]> > wrote: > > Hadoop 1.1 was released and has some important correctness and > performance fixes. > > Should we default HBase 0.94 to Hadoop 1.1? > > (HBase 0.96 was already switched... I think) > > > > -- Lars > > >
