Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3838
When running the example against a local cluster i got this exception
```
java.io.IOException: java.io.IOException: The given HDFS file URI
(hdfs:/tmp/flink_cache_-4117839671387669278) did not describe the HDFS
NameNode. The attempt to use a default HDFS configuration, as specified in the
'fs.hdfs.hdfsdefault' or 'fs.hdfs.hdfssite' config parameter failed due to the
following problem: Either no default file system was registered, or the
provided configuration contains no valid authority component (fs.default.name
or fs.defaultFS) describing the (hdfs namenode) host and port.
```
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