Github user yew1eb commented on the issue:
https://github.com/apache/flink/pull/5072
@greghogan, I saw the following in the `flink-core` POM:
```
<!-- We explicitly depend on snappy since connectors that require it load
it through the system class loader -->
<dependency>
<groupId>org.xerial.snappy</groupId>
<artifactId>snappy-java</artifactId>
</dependency>
```
I think this PR just upgrades the snappy-java version from 1.1.1.3 to 1.1.4
for the "flink-core" module. I can not find out what bad effects it will
cause.:)
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