[HDFS-8209] Support different number of datanode directories in MiniDFSCluster.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Surendra Singh Lilhore
• Reporter: Surendra Singh Lilhore
• Created: 21/Apr/15 19:46
• Updated: 30/Aug/16 01:36
• Resolved: 08/May/15 09:36

Description

I want to create MiniDFSCluster with 2 datanode and for each datanode I want to set different number of StorageTypes, but in this case I am getting ArrayIndexOutOfBoundsException.

My cluster schema is like this.

final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
				.numDataNodes(2)
				.storageTypes(new StorageType[][] {{ StorageType.DISK, StorageType.ARCHIVE },{ StorageType.DISK } })
				.build();

Exception :

java.lang.ArrayIndexOutOfBoundsException: 1
	at org.apache.hadoop.hdfs.MiniDFSCluster.makeDataNodeDirs(MiniDFSCluster.java:1218)
	at org.apache.hadoop.hdfs.MiniDFSCluster.startDataNodes(MiniDFSCluster.java:1402)
	at org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:832)