multiple scanners on same table will cause problem? Scan results change among different tries.

[steven zhuang]

hi, All,
          Has anybody do scan on one table using multiple scanners at the
same time and  found some inconsistent problem?
          I am doing query on a table using dozens(20-120) of scanners in
parallel(multiple threads), trying to take advantage of the multiple cores.
But I found the scan results doesn't consist among several goes. I have
checked my code, seems there is no bug in it. So I guess the problem may
come from the HBase itself.
          My HBase version is 0.20.3.