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The "API" page has been changed by Max Metral. The comment on this change is: Attempt to clarify batch_mutate structure. http://wiki.apache.org/cassandra/API?action=diff&rev1=49&rev2=50 -------------------------------------------------- . `batch_mutate(keyspace, mutation_map, consistency_level)` - Executes the specified mutations on the keyspace. `mutation_map` is a `map<string, map<string, list<Mutation>>>`; the outer map maps the key to the inner map, which maps the column family to the `Mutation`; can be read as: `map<key : string, map<column_family : string, list<Mutation>>>`. + Executes the specified mutations on the keyspace. `mutation_map` is a `map<string, map<string, list<Mutation>>>`; the outer map maps the key to the inner map, which maps the column family to the `Mutation`; can be read as: `map<key : string, map<column_family : string, list<Mutation>>>`. To be more specific, the outer map key is a row key, the inner map key is the column family name. A `Mutation` specifies either columns to insert or columns to delete. See `Mutation` and `Deletion` above for more details.
