Ya thanks Ram. With VERSIONS => 1 it means max versions? If yes, why should the old value be stored when there is a latest version.
Thanks Regards Mukund Murrali On Fri, Oct 16, 2015 at 1:40 PM, ramkrishna vasudevan < ramkrishna.s.vasude...@gmail.com> wrote: > With VERSIONS=>1 and MIN_VERSIONS=0, I think the intended behaviour is to > always have the current version as the one to be returned. So in your cases > you inserted two cells at different timestamp. But the Delete with > addColumn will always try to delete the latest version. So in this case > the latest version happens to be the value 2 version. Hence for C1 that > value got masked and whether u do the flush or not you always end up in the > value 1 cell. (ie the first one). > > Coming to the family 2 where you want atleast one version to be maintained > . I need to check the code more thoroughly to determine the behaviour > difference between flush and no flush. > > REgards > Ram > > On Fri, Oct 16, 2015 at 1:05 PM, mukund murrali <mukundmurra...@gmail.com> > wrote: > > > Can anyone enlighten why this is happening. This is causing problems in > our > > production. > > > > On Thu, Oct 15, 2015 at 4:15 PM, mukund murrali < > mukundmurra...@gmail.com> > > wrote: > > > > > Hi > > > > > > I am using hbase-1.0. I had two column families C1 and C2. > > > > > > C1 => 'VERSIONS => 1, MIN_VERSIONS => 0 (default) > > > C2 => 'VERSIONS' => 1, MIN_VERSIONS => 1 > > > > > > I inserted two versions as follows > > > put 'test','ro1','C1:col1,'value1' > > > put 'test','ro1','C2:col1,'value1' > > > > > > > > > put 'test','ro1','C1:col1,'value2' > > > put 'test','ro1','C2:col1,'value2' > > > > > > I did a delete using java API with addColumn ( not Columns) for both C1 > > > and C2 column families. On a get call I got the result as > > > > > > C1:col1 timestamp=1444904709797,value=value1 > > > > > > C2:col1 timestamp=1444904695656, > value=value1 > > > > > > on doing a *flush* on the table, the C2 data got vanished and > subsequent > > > get call returned with first version of C1. > > > > > > C1:col1 timestamp=1444904709797,value=value1 > > > > > > On deeper analysis, we found that a flush before delete will purge both > > of > > > those data. > > > > > > My question is with MIN_VERSIONS => 0 and VERSIONS => 1, why does the > > > second version gets promoted during deletion and does not get removed > > even > > > after flush? > > > > > > In other words with VERSIONS =>1 , why should the earlier versions be > > > stored? > > > > > > Also with MIN_VERSIONS => 1 and VERSIONS => 1, though the second > version > > > promoted but subsequent flush purged it. > > > > > > Is this an inconsistency or my understanding is wrong? > > > > > > Thanks > > > > > > Regards > > > Mukund Murrali > > > > > >
