Are those incremented cells? J-D
On Thu, Jul 11, 2013 at 10:23 AM, Patrick Schless <patrick.schl...@gmail.com> wrote: > I have had replication running for about a week now, and have had a lot of > data flowing to our slave cluster over that time. Now, I'm running the > verifyrep MR job over a 1-hour period a couple days ago (which should be > fully replicated), and I'm seeing a small number of "BADROWS". > Spot-checking a few of them, the issue seems to be that the rows are > present, and have the same values, but a single cell in the row will be off > by 1ms. > > For instance, the log reports this error: > java.lang.Exception: This result was different: > keyvalues={01e581745c6a43aba01adf105af4e4a92013071015/data:!\xDF\xE0\x01/1373470622986/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:&s\xC0\x01/1373470923084/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:+\x07\xA0\x01/1373471223717/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:/\x9B\x80\x01/1373471523316/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:4/`\x01/1373471822913/Put/vlen=8} > compared to > keyvalues={01e581745c6a43aba01adf105af4e4a92013071015/data:!\xDF\xE0\x01/1373470622986/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:&s\xC0\x01/1373470923084/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:+\x07\xA0\x01/1373471223716/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:/\x9B\x80\x01/1373471523316/Put/vlen=8, > 01e581745c6a43aba01adf105af4e4a92013071015/data:4/`\x01/1373471822913/Put/vlen=8} > > Some diffing reduces the issue down to: > 01e581745c6a43aba01adf105af4e4a92013071015/data:+\x07\xA0\x01/1373471223717/Put/vlen=8 > compared to > 01e581745c6a43aba01adf105af4e4a92013071015/data:+\x07\xA0\x01/1373471223716/Put/vlen=8. > > I'm assuming that the value before "/Put" is the cell's timestamp, which > means that the copies are off by 1ms. > > Any idea what could cause this? So far (the job is still running), the > problem seems rare (about 0.05% of rows). > > Thanks, > Patrick