[HDFS-2851] HA: Optimize stale block processing by triggering block reports immediately on failover

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.0.0-alpha
• Component/s: balancer & mover, datanode, ha, namenode
• Assignee: Uma Maheswara Rao G
• Reporter: Uma Maheswara Rao G
• Created: 27/Jan/12 15:35
• Updated: 03/Dec/15 21:38
• Resolved: 03/Dec/15 21:38

Description

After Balancer runs, usedSpace is not balancing correctly.

java.util.concurrent.TimeoutException: Cluster failed to reached expected values of totalSpace (current: 1500, expected: 1500), or usedSpace (current: 390, expected: 300), in more than 20000 msec.
	at org.apache.hadoop.hdfs.server.balancer.TestBalancer.waitForHeartBeat(TestBalancer.java:233)
	at org.apache.hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes.testBalancerWithHANameNodes(TestBalancerWithHANameNodes.java:99)