it is just a column data, if it's so slow to do the thing , i cann't use it in my case.
i am trying javacode to delete instead of using the shell to delete data . javacode is ok. i am thinking weather the shell delete thing setting some current timestamp in hbase. so, when i put the data timestamp before current , that would not set. i am not sure about this. thanks any way , 2010/12/3 Lars George <[email protected]> > Did you check that the compaction was completed? Please "tail -f" or > so the master log to see when it is done. You may have tried too quick > for it to do its magic. > > On Fri, Dec 3, 2010 at 3:40 AM, 梁景明 <[email protected]> wrote: > > here is the thing what i do ,i think not only mapreduce error . > > > > shell_1: > > create 't1','f' > > > > > > shell_2: > > scan 't1' > > > > shell_3: > > deleteall 't1','a' > > > > shell_4: > > major_compact 't1' > > > > javacode: > > HBaseConfiguration hconf = new HBaseConfiguration(new > > Configuration()); > > hconf.addResource(HbaseMapr.class.getResource("/hbase-site.xml")); > > HTable ptable = new HTable(hconf, "t1".getBytes()); > > Put p = new Put("a".getBytes()); > > Date d = DateUtil.getDate("yyyy-MM-dd", "2010-10-24"); > > p.add("f".getBytes(), Bytes.toBytes(d.getTime()), d.getTime(), > > "o1".getBytes()); > > d = DateUtil.getDate("yyyy-MM-dd", "2010-10-23"); > > p.add("f".getBytes(), > > Bytes.toBytes(String.valueOf(d.getTime())), d.getTime(), > > "o2".getBytes()); > > ptable.put(p); > > ptable.flushCommits(); > > > > 1、i ran shell_1 to create table > > 2、i ran javacode to put some simple data into hbase > > 3、i ran shell_2 > > ------------------------------------------------ > > ROW > > COLUMN+CELL > > > > a column=f:1287763200000, > > timestamp=1287763200000, value=o2 > > a column=f:1287849600000, > > timestamp=1287849600000, value=o1 > > -------------------------------------------------- > > 4、i ran shell_3 and shell_2 delete data > > --------------------------------------------------- > > ROW COLUMN+CELL > > -------------------------------------------------------- > > 5、i ran javacode again. > > 6、i ran shell_2 to scan ,insert data failed > > ---------------------------------------------------------- > > ROW COLUMN+CELL > > ---------------------------------------------------------- > > 7、i ran shell_4 > > 8、i ran javacode again. > > 9、i ran shell_2 to scan ,insert data failed > > ---------------------------------------------------------- > > ROW COLUMN+CELL > > ---------------------------------------------------------- > > > > 在 2010年12月2日 下午6:17，Lars George <[email protected]>写道： > > > >> So you are using explicit time stamps for the put calls? Is this related > to > >> > >> https://issues.apache.org/jira/browse/HBASE-3300 > >> > >> by any chance? You have to be extra careful with explicit timestamps > >> as newer deletes can mask readding puts that have an older timestamp. > >> > >> Try this: > >> > >> 1. Do the MR job > >> 2. Do the delete from the shell > >> 3. Check that it was deleted from the shell > >> 4. Run a major compaction of the table on the shell (e.g. > >> "major_compact <tablename>") > >> 5. Re-run the MR job > >> 6. Check if the value is there again. > >> > >> And finally let us know here :) > >> > >> Lars > >> > >> On Thu, Dec 2, 2010 at 2:48 AM, 梁景明 <[email protected]> wrote: > >> > 0.20.6 > >> > > >> > 2010/12/2 Lars George <[email protected]> > >> > > >> >> What version of HBase are you using? > >> >> > >> >> On Dec 1, 2010, at 9:24, 梁景明 <[email protected]> wrote: > >> >> > >> >> > i found that if i didnt control timestamp of the put > >> >> > mapreduce can run, otherwise just one time mapreduce. > >> >> > the question is i scan by timestamp to get my data > >> >> > so to put timestamp is my scan thing. > >> >> > > >> >> > any ideas ? thanks. > >> >> > > >> >> > 2010/12/1 梁景明 <[email protected]> > >> >> > > >> >> >> Hi,i found a problem in my hbase mapreduce case. > >> >> >> > >> >> >> when first running mapreduce TableMapReduceUtil runs ok. > >> >> >> > >> >> >> and i use hbase shell to delete some data from the table that > >> mapreduce > >> >> one > >> >> >> . > >> >> >> > >> >> >> then ran mapreduce to insert some new data. > >> >> >> > >> >> >> no thing data changed, mapreduce didnt work. > >> >> >> > >> >> >> after that i drop the table and recreate it > >> >> >> > >> >> >> run mapreduce again ,data inserted successful. > >> >> >> > >> >> >> what happen to mapreduce . > >> >> >> > >> >> >> Is it only can insert table just one time? > >> >> >> > >> >> > >> > > >> > > >
