Github user rmetzger commented on the issue:
https://github.com/apache/flink/pull/2369
@StephanEwen: The explicit exclude is actually not needed, because the
kafka version defined in the connector has precedence over transitive kafka
versions.
```
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @
flink-connector-kafka-0.10_2.10 ---
[INFO] org.apache.flink:flink-connector-kafka-0.10_2.10:jar:1.2-SNAPSHOT
[INFO] +-
org.apache.flink:flink-connector-kafka-0.9_2.10:jar:1.2-SNAPSHOT:compile
[INFO] | \-
org.apache.flink:flink-connector-kafka-base_2.10:jar:1.2-SNAPSHOT:compile
[INFO] +- org.apache.kafka:kafka-clients:jar:0.10.0.1:compile
[INFO] | +- net.jpountz.lz4:lz4:jar:1.3.0:compile
[INFO] | \- org.xerial.snappy:snappy-java:jar:1.1.2.6:compile
```
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