[CASSANDRA-348] Range scan over two nodes returns wrong data

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 0.4
• Severity: Normal
• Assignee: Jonathan Ellis
• Reporter: Mark Robson

Authors

Jonathan Ellis

• Created: 06/Aug/09 10:35
• Updated: 16/Apr/19 09:33
• Resolved: 12/Aug/09 21:27

Description

I've got two nodes with tokens 00000000 and 88888888. I add 16 rows in which are spread over them, then do a key range scan.

I can scan part of the range successfully, but if I try to scan the entire range of keys (0-f) then I get unexpected results

./Cassandra-remote -h localhost:9160 get_key_range Keyspace1 Standard1 0 31 1000
['00', '01', '10', '11', '20', '21', '30', '31']

./Cassandra-remote -h localhost:9160 get_key_range Keyspace1 Standard1 3 81 1000
['30', '31', '40', '41', '50', '51', '60', '61', '70', '71', '80', '81']

./Cassandra-remote -h localhost:9160 get_key_range Keyspace1 Standard1 7 b1 1000
['70', '71', '80', '81', '90', '91', 'a0', 'a1', 'b0', 'b1']

./Cassandra-remote -h localhost:9160 get_key_range Keyspace1 Standard1 a g 1000
['a0', 'a1', 'b0', 'b1', 'c0', 'c1', 'd0', 'd1', 'e0', 'e1', 'f0', 'f1']

All of which returned as I expected.

But when I range scan the whole lot (0-g) then I get:

./Cassandra-remote -h localhost:9160 get_key_range Keyspace1 Standard1 0 g 1000
[ '00',
'90',
'91',
'a0',
'a1',
'b0',
'b1',
'c0',
'c1',
'd0',
'd1',
'e0',
'e1',
'f0',
'f1']

Where have 01-81 gone?

I'll attach the data loading script.