[MAHOUT-1639] streamingkmeans doesn't properly validate estimatedNumMapClusters -km

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.9
• Fix Version/s: 0.10.0
• Component/s: classic
• Labels: legacy
• Assignee: Suneel Marthi
• Reporter: Peter Sergeant
• Created: 27/Jan/15 02:41
• Updated: 31/Jan/24 22:14
• Resolved: 25/Mar/15 03:50

Description

The value of -km isn't checked by the CLI, which means if you don't specify it, you get the rather cryptic:

Exception in thread "main" java.lang.NumberFormatException: null
	at java.lang.Integer.parseInt(Integer.java:454)
	at java.lang.Integer.parseInt(Integer.java:527)
	at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:252)
	at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.run(StreamingKMeansDriver.java:239)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
	at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.main(StreamingKMeansDriver.java:491)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
	at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
	at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)

Other parameters give helpful error messages when required