let me post my draft patch, and feel free to nuke it. but there's a lot of boring stuff code that you can use (all the observer interfaces to add & co)
Matteo On Tue, Aug 6, 2013 at 10:56 AM, liushaohui <[email protected]> wrote: > Thanks, Jean-Marc. > > There is truncate_preserve in HBASE-5525. But it drops the acls info. > > I will try to impl truncate_preserver_acl by add a new api in hmaster. > > HBASE-8332 discussed this problem, too. But no implement. > > > > On 08/05/2013 08:03 PM, Jean-Marc Spaggiari wrote: > >> truncate_preserve (from shell) will still do the disable, but it will not >> drop the regions split. Can you try and see if it keep he ACLs too? If >> not, >> might be a good idea to do something like "truncate_preserve_acl" too... >> >> JM >> >> 2013/8/5 liushaohui <[email protected]> >> >> hi all: >>> >>> In our shared secure hbase cluster, users often wants to clean all >>> tested data in their tables. Currently, hbase supports the >>> >>> truncate method , but its impl is based on disable table-> delete table >>> -> >>> create table. >>> >>> There are two drawbacks in this impl. >>> >>> 1, Region split info. Truncate creates a new table with just a region. It >>> loses the region split info, which is not suitable for pre-split tables. >>> >>> 2, Table ACLs. In the deletion of table, the tables' acls will be >>> deleted >>> too. So every truncate need to be operated by hbase admin. >>> >>> >>> Is there any other effective method to clean all data of a table? >>> >>> What about implement a real truncate method in hmaster which keeps region >>> split info and table acls? >>> >>> Thanks >>> >>> >>> - liushaohui >>> >>> >>> >>> >>> >>> >
