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https://issues.apache.org/jira/browse/CASSANDRA-11346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Stupp resolved CASSANDRA-11346.
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Resolution: Not A Problem
Your Java code for this UDF itself is wrong - i.e. it cannot be compiled.
That's what the error message says.
> Can't create User Defined Functions with same name, different args/types
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-11346
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11346
> Project: Cassandra
> Issue Type: Bug
> Environment: Cassandra 3.4 | Ruby driver 3.0.0-rc1
> Reporter: Kishan Karunaratne
>
> As of Cassandra 3.4, I can no longer create multiple UDFs with the same name,
> but different args/types:
> {noformat}
> CREATE FUNCTION state_group_and_sum(state map<int, int>, star_rating int)
> CALLED ON NULL INPUT
> RETURNS map<int, int>
> LANGUAGE java
> AS 'if (state.get(star_rating) == null)
> state.put(star_rating, 1); else state.put(star_rating, ((Integer)
> state.get(star_rating)) + 1); return state;';
> CREATE FUNCTION state_group_and_sum(state map<int, smallint>,
> star_rating smallint)
> CALLED ON NULL INPUT
> RETURNS map<int, smallint>
> LANGUAGE java
> AS 'if (state.get(star_rating) == null)
> state.put(star_rating, 1); else state.put(star_rating, ((Integer)
> state.get(star_rating)) + 1); return state;';
> {noformat}
> Returns to the client:
> {noformat}
> InvalidRequest: code=2200 [Invalid query] message="Could not compile function
> 'simplex.state_group_and_sum' from Java source:
> org.apache.cassandra.exceptions.InvalidRequestException: Java source
> compilation failed:
> Line 1: The method put(Integer, Short) in the type Map<Integer,Short> is not
> applicable for the arguments (Short, int)
> Line 1: The method put(Integer, Short) in the type Map<Integer,Short> is not
> applicable for the arguments (Short, int)
> Line 1: Cannot cast from Short to Integer
> {noformat}
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