Care to share that TestPutScan? Just attach it in a pastebin Thx,
J-D On Tue, May 29, 2012 at 6:13 AM, Ondřej Stašek <ondrej.sta...@firma.seznam.cz> wrote: > My program writes changes to HBase table by issuing lots of Puts (autoCommit > turned off, flush on end) and afterwards uses ResultScanner on whole table > to read all rows and act upon them. My problem is that on several occasions > scan does not return expected rows. Either scan does not start on the > beginning of table or somewhere during scan I got old data (not those > written by Puts before). > > I have even written simple test application to simulate this behavior: > 1. write 1M simple numbered rows to a table > 2. scan through table to test output, delete every 10th row > 3. scan again after delete > 4. repeat until error found > > Sample output: > > 12/05/29 00:32:12 INFO hbase.TestPutScan: Run 342 put 1000000 rows > 12/05/29 00:32:35 INFO hbase.TestPutScan: Run 342 scan + del every 10th row > 12/05/29 00:33:29 INFO hbase.TestPutScan: Run 342 scan > 12/05/29 00:33:29 ERROR hbase.TestPutScan: Expected value: value 0000001 > 0000342, got: value 0281999 0000342 > > This means, that program expected to get first row, but got 281999th. > > This test ran on "minicluster" of 2 regionservers runing Cloudera's cdh3u4 > distribution. > > Today I got 3 errors like that and from RS's log it seems that in the same > time hbase balancer issued reassign command for this table region (table > have only 1 region). > > Any pointers on what to check or what to send you to help resolve this > issue? > > Regards > > Ondrej Stasek >
