[TINKERPOP-843] Misspecified HADOOP_GREMLIN_LIBS generates NullPointerException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.1-incubating
• Fix Version/s: 3.1.0-incubating
• Component/s: hadoop
• Environment: Linux, gremlin shell
• Assignee: Marko A. Rodriguez
• Reporter: David Robinson
• Created: 15/Sep/15 18:05
• Updated: 14/Oct/15 15:15
• Resolved: 14/Oct/15 15:08

Description

If HADOOP_GREMLIN_LIBS is specified incorrectly, for example listing jar files and not directories, the code generates the following error:

Caused by: java.lang.NullPointerException
at java.util.Arrays.stream(Arrays.java:5004)
at java.util.stream.Stream.of(Stream.java:1000)
at org.apache.tinkerpop.gremlin.hadoop.process.computer.giraph.GiraphGraphComputer.loadJars(GiraphGraphComputer.java:197)
at org.apache.tinkerpop.gremlin.hadoop.process.computer.giraph.GiraphGraphComputer.lambda$submit$41(GiraphGraphComputer.java:101)