Details
Major Description
These two lines in SparkGraphComputer assume that HADOOP_GREMLIN_LIBS will only contain local file system references (although it seems that the rest of the code could handle DFS references):
final String[] paths = hadoopGremlinLocalLibs.split(":"); final FileSystem fs = FileSystem.get(hadoopConfiguration);
If, for example, HADOOP_GREMLIN_LIBS would be set to hdfs:///spark-gremlin-libs:/foo/bar, the split(":") call would obviously separate the file system scheme (hdfs://) from the path (/spark-gremlin-libs).
Next, FileSystem.get(hadoopConfiguration) will always only return a reference to the FileSystem that is defined as the default file system.
The same is probably true for GiraphGraphComputer.
