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? >> >> >> >> >> >> > >> >
