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*