Cannot get range slice of super columns in reversed order
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Key: CASSANDRA-2212
URL: https://issues.apache.org/jira/browse/CASSANDRA-2212
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.7.2
Environment: Fedore 11, Intel Core i5
Reporter: Muga Nishizawa
Fix For: 0.7.3
I cannot get range slice of super columns in reversed order. These data are
stored in Cassandra in advance. On the other hand, range slice of these data
in normal order can be acquired.
You can reproduce the bug by executing attached programs.
- 1. Start Cassandra daemon on localhost (number of thrift port is 9160)
- 2. Create keyspace and column family, according to "create_table.cli",
- 3. Execute "cassandra_sample_insert.py", storing pairs of row keys and super
columns
- 4. Execute "cassandra_sample_rangeslice.py" and get range slice of stored
super columns
"cassandra_sample_insert.py" and "cassandra_sample_rangeslice.py" require
pycassa.
You will need to execute 4."cassandra_sample_rangeslice.py" with following
options so that you get range slice of super columns in reversed order.
% python cassandra_sample_rangeslice.py -r 00082 00083
On the other hand, to get range slice in normal order, you will need to use
following options.
% python cassandra_sample_rangeslice.py -f 00082 00083
00082 and 00083 are the specified key range. Range slice can be acquired in
normal order but, I cannot get it in reversed order.
I assume that there may be a bug within the code for acquiring the index block
of specified range. In fact, 00083 is included in gap between lastName of
index block and firstName of next index block.
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