Hi, I am reading this
https://github.com/forcedotcom/phoenix/wiki/Secondary-Indexing and trying
to figure out what is the difference between mutable and immutable index.
One difference I figure out is that immutable index is client-managed
while mutable index is cp-managed.

I was expecting that, mutable index coprocessor do three things: 1) put
new index entry, 2) read base table and get old index value, 3) delete old
index value if any. I could not find code for 2) and 3). So am I
understanding it wrong, or I did not find the correct code path?


Wei Tan, PhD
Research Staff Member
IBM T. J. Watson Research Center
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