[HDFS-6342] TestBalancerWithNodeGroup.testBalancerWithRackLocality may fail if balancer.id file is huge

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Chen He
• Reporter: Chen He
• Created: 05/May/14 15:21
• Updated: 25/Oct/19 20:27
• Resolved: 06/May/14 15:25

Description

The testBalancerWithRackLocality mehtod is to test balancer moving data blocks with rack locality consideration.

It crates two nodes cluster. One node belongs to rack0nodeGroup0, theother node blongs to rack1nodeGroup1. In this 2 datanodes minicluster, block size is 10B and total cluster capacity is 6000B ( 3000B on each datanodes). It create 180 data blocks with replication factor 2. Then, a node datanode is created (in rack1nodeGroup2) and balancer starts to balancing the cluster.

It expects there is only data blocks moving within rack1. After balancer is done, it assumes the data size on both racks is the same. It will break
if balancer.id file is huge and there is inter-rack data block moving.

Issue Links

• duplicates: HDFS-6250 TestBalancerWithNodeGroup.testBalancerWithRackLocality fails