[jira] [Created] (FLINK-4119) Null checks in close() for Cassandra Input/Output Formats, checking arguments via Flink Preconditions

[Andrea Sella (JIRA)]

Andrea Sella created FLINK-4119:
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             Summary: Null checks in close() for Cassandra Input/Output 
Formats, checking arguments via Flink Preconditions
                 Key: FLINK-4119
                 URL: https://issues.apache.org/jira/browse/FLINK-4119
             Project: Flink
          Issue Type: Improvement
          Components: Batch Connectors and Input/Output Formats, Cassandra 
Connector
            Reporter: Andrea Sella
            Assignee: Andrea Sella
            Priority: Minor
             Fix For: 1.1.0


Add null checks for session and cluster to align the behaviour with Cassandra 
Streaming Connector, refactor check arguments using Flink Preconditions



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