[jira] [Created] (FLUME-2872) Kafka Sink should be able to select which header as the key

["Li Ye (JIRA)" <ji...@apache.org>]

Li Ye created FLUME-2872:
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             Summary: Kafka Sink should be able to select which header as the key
                 Key: FLUME-2872
                 URL: https://issues.apache.org/jira/browse/FLUME-2872
             Project: Flume
          Issue Type: Improvement
          Components: Sinks+Sources
    Affects Versions: v1.6.0
            Reporter: Li Ye


In Flume 1.6.0, Kafka Sink uses the topic and key properties from the FlumeEvent headers to send events to Kafka. If topic exists in the headers, the event will be sent to that specific topic, overriding the topic configured for the Sink. If key exists in the headers, the key will used by Kafka to partition the data between the topic partitions. Events with same key will be sent to the same partition. If the key is null, events will be sent to random partitions.
But if Kafka Sink is able to select which header as the key, much convieience will be brought to Flume users.



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