Stefen Hillman created CASSANDRA-18998:
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             Summary: Expose CDC via CQL
                 Key: CASSANDRA-18998
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18998
             Project: Cassandra
          Issue Type: Improvement
          Components: Feature/Change Data Capture
            Reporter: Stefen Hillman


It looks like there was originally a plan to expose change data externally via 
CQL for any client to consume, as noted under Design Options #4 on the original 
design document: 
[https://docs.google.com/document/d/1ZxCWYkeZTquxsvf5hdPc0fiUnUHna8POvgt6TIzML4Y/edit?usp=sharing.]

 

It appears that this was ultimately not implemented. Is there a plan to improve 
CDC in the future with this functionality? The current implementation is 
tedious to use - you have to write a local agent that lives on every single c* 
node and then implement the Apache-provided CommitLogReader in order to parse 
the files. On top of that, it makes deduplication and ordering basically 
impossible if there isn't an inherently ordered property.



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