[CASSANDRA-2123] nodetool cfhistograms write/read latency columns are reversed

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.7.1
• Component/s: Tool/nodetool
• Severity: Low
• Assignee: Jonathan Ellis Assign to me
• Reporter: Chris Burroughs

Authors

Jonathan Ellis

• Created: 07/Feb/11 15:53
• Updated: 16/Apr/19 09:33
• Resolved: 09/Feb/11 16:48

Description

As first reported by Oleg Proudnikov in the thread http://www.mail-archive.com/[e-mail]/msg09607.html the columns for read and write latency are reversed in the output of cfhistograms. The Mbean values are correct.

Example output during stress.java insert test.

Keyspace1/Standard1 histograms
Offset      SSTables     Write Latency      Read Latency          Row Size      Column Count
1                  0                 0                 0                 0                 0
2                  0                 0                 1                 0                 0
3                  0                 0               998                 0                 0
4                  0                 0              7729                 0                 0
5                  0                 0             22844                 0                 0
6                  0                 0             44439                 0           6524792
7                  0                 0             64576                 0                 0
8                  0                 0             79000                 0                 0
10                 0                 0            139338                 0                 0
12                 0                 0             84675                 0                 0
14                 0                 0             36928                 0                 0
17                 0                 0             16547                 0                 0
20                 0                 0              3926                 0                 0
24                 0                 0              1681                 0                 0
29                 0                 0               776                 0                 0
35                 0                 0               357                 0                 0
42                 0                 0               172                 0                 0
50                 0                 0                51                 0                 0
60                 0                 0                15                 0                 0
72                 0                 0                10                 0                 0
86                 0                 0                 4                 0                 0
103                0                 0                 6                 0                 0
124                0                 0                 3                 0                 0
149                0                 0                 1                 0                 0
179                0                 0                 0                 0                 0
215                0                 0                 1                 0                 0
258                0                 0                 1                 0                 0
310                0                 0                 0                 0                 0
372                0                 0                 1           6524792                 0
446                0                 0                 2                 0                 0
535                0                 0                 0                 0                 0
642                0                 0                 0                 0                 0
770                0                 0                 0                 0                 0
924                0                 0                 0                 0                 0
1109               0                 0                 1                 0                 0
1331               0                 0                 0                 0                 0