Lars: I will go ahead and log an HBase JIRA, tomorrow morning. This hopefully would give people enough time to respond.
Cheers On Mon, Apr 15, 2013 at 8:00 PM, lars hofhansl <la...@apache.org> wrote: > OK. Let's try to fix that quickly, so that I can release HBase 0.94.7. > > -- Lars > > > > ________________________________ > From: Ted Yu <yuzhih...@gmail.com> > To: d...@hbase.apache.org; hdfs-dev@hadoop.apache.org > Sent: Monday, April 15, 2013 7:13 PM > Subject: collision in the naming of '.snapshot' directory between hdfs > snapshot and hbase snapshot > > > Hi, > This afternoon Huned ad I discovered an issue while playing with HBase > Snapshots on top of Hadoop's Snapshot branch ( > http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2802/). > > HDFS (built from HDFS-2802 branch) doesn't allow paths with .snapshot as a > component while HBase tries to create paths with .snapshot as a component. > This leads to issues in HBase, and one of HDFS or HBase needs to give up > the .snapshot reserved keyword. HBase released Snapshots feature in 0.94.6 > (quite recently) and it may not be too late to change HBase to use a > different path component in an upcoming new release. > > In HBase these path names are not user visible. If there is a deployment of > 0.94.6, one could provide a migration tool that renames .snapshot to > .hbase-snapshot or something to be able to move to the Snapshot release of > Hadoop. On the other hand, .snapshot in HDFS is a user visible name and is > a convention that is used by many file systems. It's a matter of > familiarity with such path names that would help users in using HDFS > snapshots. > > I am including the hdfs-dev in this email. Would appreciate if we could > work together and come up with a solution. > > You can find sample output from hdfs command here: > http://pastebin.com/bBqR4Fvr > > Cheers >
