I configured conf to say foo.sinks.hdfsSink.hdfs.path hdfs://dsdb1:54310/flume/'%{host}'

but when I look at the dir name in console and in hdfs it looks like this:
12/06/12 18:01:27 INFO hdfs.HDFSEventSink: Closing
hdfs://dsdb1:54310/flume/''/FlumeData

12/06/12 18:01:27 INFO hdfs.BucketWriter: Renaming
hdfs://dsdb1:54310/flume/''/FlumeData.1339549272477.tmp to
hdfs://dsdb1:54310/flume/''/FlumeData.1339549272477

It's missing the hostname.
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