Putting back dev@hbase. ".hbase-sanpshot" would be created at cluster startup. After that user wouldn't be able to use the same directory name.
On Mon, Apr 15, 2013 at 8:23 PM, Azuryy Yu <azury...@gmail.com> wrote: > I think ".hbase-sanpshot" is good, but we should also disallow user to > create ".hbase-sanpshot" under hbase.root sub directories. > > > On Tue, Apr 16, 2013 at 11:18 AM, Ted Yu <yuzhih...@gmail.com> wrote: > > > I plan to rename ".sanpshot" in HBase to ".hbase-sanpshot" > > > > Please suggest better name in future correspondence. > > > > Thanks > > > > On Mon, Apr 15, 2013 at 8:12 PM, Ted Yu <yuzhih...@gmail.com> wrote: > > > > > 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 > > >> > > > > > > > > >
