Zoltan, It's actually a bit more complicated because the behavior is non-deterministic. If a compaction happens the delete marker may be removed, and if you add the rows back after this time they *will* be visible. See the following for more info:
http://mail-archives.apache.org/mod_mbox/hbase-dev/201201.mbox/%3c1326684100.80142.yahoomail...@web121706.mail.ne1.yahoo.com%3E https://issues.apache.org/jira/browse/HBASE-5241 -Jason On Wed, Jul 18, 2012 at 10:32 AM, Zoltán Tóth-Czifra < zoltan.tothczi...@softonic.com> wrote: > Hi, > > Thanks for the quick answer! So I understand it's the expected behavior...? > For me it doesn't explain why can't I re-add the exact same rows. > ________________________________________ > From: jdcry...@gmail.com [jdcry...@gmail.com] on behalf of Jean-Daniel > Cryans [jdcry...@apache.org] > Sent: Wednesday, July 18, 2012 7:26 PM > To: user@hbase.apache.org > Subject: Re: Table not storing versions after deleteall > > The deleteall marker will hide everything that comes before its > timestamp (in your case it's current time), if you just want to delete > specific values use delete instead. > > Hope this helps, > > J-D > > On Wed, Jul 18, 2012 at 10:19 AM, Zoltán Tóth-Czifra > <zoltan.tothczi...@softonic.com> wrote: > > Hi, > > > > For a few days now I'm fighting with a very strange behaviour of Hbase. > I hope you can explain it to me. > > In short: add rows with version, delete all rows, add the same rows > again, old rows disappear. > > > > I create a table, add some rows, some of them with explicit timestamp. > After this, I can retreive them with no problem. However, when I delete the > cells in these rows (all of them), and add the exact same rows to the table > again, the cell with the explicit timestamp is not stored! > > > > I wonder if you can reproduce it and then explain. Here is a script: > > > > ---- SCRIPT ---- > > > > version > > > > create 'test_delete_1', {NAME => 'f1', VERSIONS => 100} > > > > put 'test_delete_1', 'row_xzy', 'f1', '123', 1342631168000 > > put 'test_delete_1', 'row_xzy', 'f1', '456' > > > > get 'test_delete_1', 'row_xzy', {TIMERANGE => [1342631167000, > 1442631167000], VERSIONS => 10} > > > > deleteall 'test_delete_1', 'row_xzy', 'f1' > > > > put 'test_delete_1', 'row_xzy', 'f1', '123', 1342631168000 > > put 'test_delete_1', 'row_xzy', 'f1', '456' > > > > get 'test_delete_1', 'row_xzy', {TIMERANGE => [1342631167000, > 1442631167000], VERSIONS => 10} > > > > disable 'test_delete_1' > > drop 'test_delete_1' > > > > ---- END OF SCRIPT ---- > > > > ...and the output: > > > > ---- OUTPUT ---- > > > > > > $ hbase shell test_del.txt > > 0.90.4-cdh3u3, r, Thu Jan 26 10:13:36 PST 2012 > > > > 0 row(s) in 0.5080 seconds > > > > 0 row(s) in 0.1750 seconds > > > > 0 row(s) in 0.0100 seconds > > > > COLUMN CELL > > f1: > timestamp=1342631583013, value=456 > > f1: > timestamp=1342631168000, value=123 > > 2 row(s) in 0.0260 seconds > > > > 0 row(s) in 0.0130 seconds > > > > 0 row(s) in 0.0080 seconds > > > > 0 row(s) in 0.0090 seconds > > > > COLUMN CELL > > f1: > timestamp=1342631583071, value=456 > > 1 row(s) in 0.0080 seconds > > > > 0 row(s) in 2.0400 seconds > > > > 0 row(s) in 1.0880 seconds > > > > ---- END OF OUTPUT ---- > > > > Thanks! >
