Koji Kawamura created NIFI-4818:
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             Summary: Fix transit URL parsing at Hive2JDBC and KafkaTopic for 
ReportLineageToAtlas
                 Key: NIFI-4818
                 URL: https://issues.apache.org/jira/browse/NIFI-4818
             Project: Apache NiFi
          Issue Type: Bug
          Components: Extensions
    Affects Versions: 1.5.0
            Reporter: Koji Kawamura
            Assignee: Koji Kawamura


ReportLineageToAtlas parses Hive JDBC connection URLs to get database names. It 
works if a connection URL does not have parameters. (e.g. 
jdbc:hive2://host:port/dbName) But it reports wrong database name if there are 
parameters. (e.g. 
jdbc:hive2://host.port/dbName;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=hiveserver2)

Also, if there are more than one host:port defined, it will not be able to 
analyze cluster name from hostnames correctly.

Similarly for Kafka topic, the reporting task uses transit URIs to analyze 
hostnames and topic names. It does handle multiple host:port definitions within 
a URI, however, current logic only uses the first hostname entry even if there 
are multiple ones. For example, with a transit URI, 
"PLAINTEXT://0.example.com:6667,1.example.com:6667/topicA", it uses 
"0.example.com" to match configured regular expressions to derive a cluster 
name. If none of regex matches, then it uses the default cluster name without 
looping through all hostnames. It never uses the 2nd or later hostnames to 
derive a cluster name.



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