Because you did this... "hadoop fs -rmr /hbase/cjjWaitHash" ... your data is gone.
Per... http://hbase.apache.org/book.html#trouble.namenode ... that's where StoreFiles are kept for that particular table. On 5/7/12 10:05 AM, "Jiajun Chen" <[email protected]> wrote: > which temp directory ? > lose the data of all tables ? > >On 7 May 2012 22:01, Tom Brown <[email protected]> wrote: > >> I made a very similar mistake myself the other day when trying to reset >>my >> cluster. What finally solved it was deleting the temp directory used >>by my >> data nodes (in my case I wanted to loose all my data, so it was ok to >> delete everything... In your case, you may have to figure out how to >>export >> some data first, as I don't know exactly what effect deleting that temp >> directory will have) >> >> Good luck! >> >> --Tom >> >> On Monday, May 7, 2012, Doug Meil wrote: >> >> > >> > Harsh pretty much summed it up already (e.g., "don't do that") but >>below >> > is some further reading of what just happened... >> > >> > http://hbase.apache.org/book.html#arch.catalog >> > http://hbase.apache.org/book.html#trouble.namenode >> > >> > ... META is just an HBase table under the covers. By deleting the >>table >> on >> > the HDFS filesystem, it did nothing with the table metadata in META. >> > >> > >> > >> > >> > >> > On 5/7/12 9:18 AM, "Harsh J" <[email protected] <javascript:;>> >>wrote: >> > >> > >The drop is what you ought to have done first, before removing the FS >> > >folder and the meta entries. It does all those actions for you. Why >> > >did you do it this way? >> > > >> > >Do you see the table still appearing in the list outputs? Can you >> > >provide us a paste bin link of: >> > > >> > >echo "scan '.META.'" | hbase shell | grep cjjWaitHash >> > > >> > >On Mon, May 7, 2012 at 6:44 PM, Jiajun Chen <[email protected] >> <javascript:;>> >> > wrote: >> > >> I deleted the folder use bin/hadoop fs -rmr /hbase/cjjWaitHash ,and >> > >>deleted >> > >> the row with prefix cjjWaitHash in .META. >> > >> Now how can I drop the table cjjWaitHash ? >> > > >> > > >> > > >> > >-- >> > >Harsh J >> > > >> > >> > >> > >> > > > >-- > >陈加俊 项目经理 >优讯时代（北京）网络技术有限公司 >优讯网 www.uuwatch.com > >地址：北京市海淀区上地五街7号昊海大厦207 > >电话：010-82895510 >传真：010-82896636 >手机：15110038983 >电邮：*[email protected]*
