JM, If you delete t2, you will also wipe out t3 right now.
On Thu, Mar 7, 2013 at 1:37 PM, Jean-Marc Spaggiari <jean-m...@spaggiari.org > wrote: > Kevin, > > How do you see that? Like a specific cell format which can "cancel" > once timestamp and no delete all the previous one? > > Like before compaction we can have > > v1:t1 > v1:t2 > v1:t3 > v1:d2 <= Delete only t2 version. > > And at compaction time we only keep that in mind and give this as a result: > v1:t1 > v1:t3 > > ? > > 2013/3/7 Jeff Kolesky <j...@opower.com>: > > Yes, this behavior would be fantastic. If you follow the Kiji/Wibi model > > of using many versioned cells, being able to delete a specific cell > without > > deleting all cells prior to it would be very useful. > > > > Jeff > > > > > > On Thu, Mar 7, 2013 at 10:26 AM, Kevin O'dell <kevin.od...@cloudera.com > >wrote: > > > >> The problem is it kills all older cells. We should probably file a JIRA > >> for this, as this behavior would be nice. Thoughts?: > >> > >> hbase(main):028:0> truncate 'tre' > >> > >> Truncating 'tre' table (it may take a while): > >> > >> - Disabling table... > >> > >> - Dropping table... > >> > >> - Creating table... > >> > >> 0 row(s) in 4.6060 seconds > >> > >> > >> hbase(main):029:0> put 'tre', 'row1', 'cf1:c1', 'abc', 111 > >> > >> 0 row(s) in 0.0220 seconds > >> > >> > >> hbase(main):030:0> put 'tre', 'row1', 'cf1:c1', 'abcd', 112 > >> > >> 0 row(s) in 0.0060 seconds > >> > >> > >> hbase(main):031:0> put 'tre', 'row1', 'cf1:c1', 'abce', 113 > >> > >> 0 row(s) in 0.0120 seconds > >> > >> > >> hbase(main):032:0> scan 'tre', {NAME => 'cf1:c1', VERSIONS => 4} > >> > >> ROW COLUMN+CELL > >> > >> > >> > >> > >> row1 > column=cf1:c1, > >> timestamp=113, value=abce > >> > >> > >> > >> row1 > column=cf1:c1, > >> timestamp=112, value=abcd > >> > >> > >> > >> row1 > column=cf1:c1, > >> timestamp=111, value=abc > >> > >> > >> hbase(main):033:0> delete 'tre', 'row1', 'cf1:c1', 112 > >> > >> 0 row(s) in 0.0110 seconds > >> > >> > >> hbase(main):034:0> scan 'tre', {NAME => 'cf1:c1', VERSIONS => 4} > >> > >> ROW COLUMN+CELL > >> > >> > >> > >> > >> row1 > column=cf1:c1, > >> timestamp=113, value=abce > >> > >> > >> > >> 1 row(s) in 0.0290 seconds > >> > >> > >> On Thu, Mar 7, 2013 at 1:22 PM, Sergey Shelukhin < > ser...@hortonworks.com > >> >wrote: > >> > >> > Shouldn't you be able to insert delete with t belonging to (t2, t3) to > >> > achieve this effect? > >> > > >> > On Thu, Mar 7, 2013 at 10:12 AM, Jonathan Natkins <na...@wibidata.com > >> > >wrote: > >> > > >> > > Yep, that's the scenario I was curious about. Thanks! > >> > > > >> > > > >> > > On Thu, Mar 7, 2013 at 10:04 AM, Jean-Marc Spaggiari < > >> > > jean-m...@spaggiari.org> wrote: > >> > > > >> > > > Hi Jonathan, > >> > > > > >> > > > Is that what you mean? > >> > > > > >> > > > In the same CF:C > >> > > > insert r1 v1 t1 > >> > > > insert r1 v2 t2 > >> > > > insert r1 v3 t3 > >> > > > > >> > > > Then you want to be able to delete r1 v3 t3 to see r1 v2? > >> > > > > >> > > > This is not possible. If you put a delete with t4, everything > older > >> > > > than t4 will be deleted when the compression will occur. > >> > > > > >> > > > JM > >> > > > > >> > > > 2013/3/7 Jonathan Natkins <na...@wibidata.com>: > >> > > > > It was suggested to me that there might be a way to delete a > cell > >> in > >> > a > >> > > > > column for a particular timestamp, without masking all older > >> values. > >> > Is > >> > > > > this true? Or have I been fed lies? > >> > > > > > >> > > > > Thanks! > >> > > > > Natty > >> > > > > > >> > > > > -- > >> > > > > http://www.wibidata.com > >> > > > > office: 1.415.496.9424 x208 > >> > > > > cell: 1.609.577.1600 > >> > > > > twitter: @nattyice <http://www.twitter.com/nattyice> > >> > > > > >> > > > >> > > > >> > > > >> > > -- > >> > > http://www.wibidata.com > >> > > office: 1.415.496.9424 x208 > >> > > cell: 1.609.577.1600 > >> > > twitter: @nattyice <http://www.twitter.com/nattyice> > >> > > > >> > > >> > >> > >> > >> -- > >> Kevin O'Dell > >> Customer Operations Engineer, Cloudera > >> > > > > > > > > -- > > *Jeff Kolesky* > > Chief Software Architect > > *Opower* > -- Kevin O'Dell Customer Operations Engineer, Cloudera