Super Column Counters Increment on Read
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Key: CASSANDRA-2719
URL: https://issues.apache.org/jira/browse/CASSANDRA-2719
Project: Cassandra
Issue Type: Bug
Affects Versions: 0.8 beta 1
Environment: Tested on 0.8.0-rc1 on both a 3 node cluster and single
instance.
Reporter: Greg Hinkle
Running a large number of batch increments on a set of counters in a super CF
seems to put some of the counters into a strange state where they increment
every time you read from them. Including just doing a list or get from the cli.
Will attach test that reproduces problem.
For example, after running the test (and it completing and the process
stopping).
[default@Chires] get CountTest[01];
=> (super_column=1306512590369,
(counter=n, value=25625))
Returned 1 results.
[default@Chires] get CountTest[01];
=> (super_column=1306512590369,
(counter=n, value=26610))
Returned 1 results.
>From debug logs at the same time:
DEBUG 12:42:13,899 get_slice
DEBUG 12:42:13,899 Command/ConsistencyLevel is
SliceFromReadCommand(table='Chires', key='01',
column_parent='QueryPath(columnFamilyName='CountTest', superColumnName='null',
columnName='null')', start='', finish='', reversed=false, count=1000000)/ONE
DEBUG 12:42:13,899 Blockfor/repair is 1/true; setting up requests to /127.0.0.2
DEBUG 12:42:13,899 reading data from /127.0.0.2
DEBUG 12:42:13,900 Processing response on a callback from 210570@/127.0.0.2
DEBUG 12:42:13,900 Preprocessed data response
DEBUG 12:42:13,900 Read: 1 ms.
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