Ok. Document a JIRA and take a look at hbck to add that. JM
2013/2/25 Ted Yu <[email protected]> > I think hbck should be enhanced to deal with this situation. > > On Mon, Feb 25, 2013 at 6:56 AM, Jean-Marc Spaggiari < > [email protected]> wrote: > > > Hi Dave, > > > > Thanks for the details. > > > > Is it something that we should think about adding into HBCK? > > > > Seems that it can detect them "Number of empty REGIONINFO_QUALIFIER rows > in > > .META.: 6" but it's not fixing them nor listing them. > > > > JM > > > > 2013/2/25 ramkrishna vasudevan <[email protected]> > > > > > Thanks for the info Dave. Others will be benefited too. > > > > > > Regards > > > Ram > > > > > > On Mon, Feb 25, 2013 at 7:25 PM, Dave Latham <[email protected]> > > wrote: > > > > > > > We recently saw some of these warnings in a cluster we were setting > up. > > > > These warnings mean there are rows in the META table that are missing > > one > > > > of the expected columns. In our case, we verified that these regions > > > > didn't appear to exist in HDFS either and the table itself showed no > > > holes > > > > or problems in hbck or via our application. After looking at the > > > > timestamps of the other data in these rows in META we determined that > > the > > > > remaining columns in META had been written on an earlier incarnation > > of a > > > > table with the same name. I.e. we created a table once, put data in > > it, > > > > deleted the table, created a new table of the same name, and > apparently > > > not > > > > everything was correctly deleted from META. I'm not sure how that > > > > happened, but to clean it up we manually removed those rows from META > > and > > > > didn't observe any more WARNings or problems afterward. There's > > another > > > > mailing list thread from some months back from someone with a similar > > > issue > > > > and resolution. Good luck! > > > > > > > > Dave > > > > > > > > > > > > On Sun, Feb 24, 2013 at 5:03 PM, Jean-Marc Spaggiari < > > > > [email protected]> wrote: > > > > > > > > > Hi, > > > > > > > > > > I'm wondering, how much should we worrie about those warnings: > > > > > WARN org.apache.hadoop.hbase.master.CatalogJanitor: > > > REGIONINFO_QUALIFIER > > > > is > > > > > empty in keyvalues={ > > > > > > > > > > I have 6 of them show each time the CatalgoJanitor is running (5 > > > > minutes). > > > > > > > > > > Doesn't seems to really be an issue, but then why is it a WARN? > > > > > > > > > > Thanks, > > > > > > > > > > JM > > > > > > > > > > > > > > >
