Elazar Gershuni created SPARK-12623:
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Summary: map key_values to values
Key: SPARK-12623
URL: https://issues.apache.org/jira/browse/SPARK-12623
Project: Spark
Issue Type: New Feature
Components: Spark Core
Reporter: Elazar Gershuni
Priority: Minor
Why doesn't the argument to mapValues() take a key as an agument?
Alternatively, can we have a "mapKeyValuesToValues" that does?
Use case: I want to write a simpler analyzer that takes the argument to map(),
and analyze it to see whether it (trivially) doesn't change the key, e.g.
g = lambda kv: (kv[0], f(kv[0], kv[1])
rdd.map(g)
Problem is, if I find that it is the case, I can't call mapValues() with that
function, as in `rdd.mapValues(lambda kv: g(kv)[1])`, since mapValues receives
only `v` as an argument.
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