cassandra probl reproduction

gistfile1.txt

server1:

[default@DEMO] set x[abc][1] = 5;
Value inserted.
Elapsed time: 1 msec(s).

server2:

[default@DEMO] set x[abc][2] = 6;
Value inserted.
Elapsed time: 5 msec(s).

[default@DEMO] get x[abc];
=> (column=1, value=5, timestamp=1337517148648000)
=> (column=2, value=6, timestamp=1337518934513000)
Returned 2 results.
Elapsed time: 3 msec(s).

[default@DEMO] del x[abc][1];
column removed.

[default@DEMO] get x[abc];
=> (column=2, value=6, timestamp=1337518934513000)
Returned 1 results.
Elapsed time: 2 msec(s).

server1:

[default@DEMO] get x[abc];
Invalid ascii bytes 4fb8eb68

php on server1:

Array
(
    [1] => O��h
    [2] => 6
)