clean up ReadCommand and related stuff for read repairs
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Key: CASSANDRA-95
URL: https://issues.apache.org/jira/browse/CASSANDRA-95
Project: Cassandra
Issue Type: Improvement
Reporter: Jun Rao
Assignee: Jun Rao
Today, ReadCommand doesn't have an explicit type attribute. A specific type of
ReadCommand is determined based on subtle difference in parameters set. For
example:
if (start > 0 || (count > 0 && count < Integer.MAX_VALUE))
{
return table.getRow(key, columnFamilyColumn, start, count);
}
A get_slice ReadCommand is determined based on start and count values. This is
very hard to understand. Also, code like that is duplicated in ReadCommand and
ConsistencyManager.
We need to make it easier to determine the type of a ReadCommand. This is
necessary for code maintenance as well as supporting new APIs in the future.
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