[HADOOP-16385] Namenode crashes with "RedundancyMonitor thread received Runtime exception"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.1
• Fix Version/s: 3.3.0, 3.2.1, 3.1.3
• Hadoop Flags: Reviewed
• Assignee: Ayush Saxena
• Reporter: krishna reddy
• Created: 20/Jun/19 05:00
• Updated: 03/Jul/19 17:13
• Resolved: 02/Jul/19 20:28

Description

*Description: *While removing dead nodes, Namenode went down with error "RedundancyMonitor thread received Runtime exception"

*Environment: *
Server OS :- UBUNTU
No. of Cluster Node:- 1NN / 225DN's / 3ZK / 2RM/ 4850 NMs
total 240 machines, in each machine 21 docker containers (1 DN & 20 NM's)

Steps:
1. Total number of containers running state : ~53000
2. Because of the load, machine was going to outofMemory and restarting the machine and starting all the docker containers including NM's and DN's
3. in some point namenode throughs below error while removing a node and NN went down.

2019-06-19 05:54:07,262 INFO org.apache.hadoop.net.NetworkTopology: Removing a node: /rack-1550/255.255.117.195:23735
2019-06-19 05:54:07,263 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* removeDeadDatanode: lost heartbeat from 255.255.117.151:23735, removeBlocksFromBlockMap true
2019-06-19 05:54:07,281 INFO org.apache.hadoop.net.NetworkTopology: Removing a node: /rack-4097/255.255.117.151:23735
2019-06-19 05:54:07,282 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* removeDeadDatanode: lost heartbeat from 255.255.116.213:23735, removeBlocksFromBlockMap true
2019-06-19 05:54:07,290 ERROR org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: RedundancyMonitor thread received Runtime exception.
java.lang.IllegalArgumentException: 247 should >= 248, and both should be positive.
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
        at org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:575)
        at org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:552)
        at org.apache.hadoop.hdfs.net.DFSNetworkTopology.chooseRandomWithStorageTypeTwoTrial(DFSNetworkTopology.java:122)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseDataNode(BlockPlacementPolicyDefault.java:873)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:770)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack(BlockPlacementPolicyDefault.java:712)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTargetInOrder(BlockPlacementPolicyDefault.java:507)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:425)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTargets(BlockPlacementPolicyDefault.java:311)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:290)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:143)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy.chooseTarget(BlockPlacementPolicy.java:103)
        at org.apache.hadoop.hdfs.server.blockmanagement.ReplicationWork.chooseTargets(ReplicationWork.java:51)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReconstructionWorkForBlocks(BlockManager.java:1902)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeBlockReconstructionWork(BlockManager.java:1854)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:4842)
        at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$RedundancyMonitor.run(BlockManager.java:4709)
        at java.lang.Thread.run(Thread.java:748)
2019-06-19 05:54:07,296 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1: java.lang.IllegalArgumentException: 247 should >= 248, and both should be positive.
2019-06-19 05:54:07,298 INFO org.apache.hadoop.hdfs.server.common.HadoopAuditLogger.audit: process=Namenode     operation=shutdown      result=invoked
2019-06-19 05:54:07,298 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at namenode/255.255.182.104
************************************************************/

Issue Links

• is broken by: HADOOP-15317 Improve NetworkTopology chooseRandom's loop
• is related to: HADOOP-16028 Fix NetworkTopology chooseRandom function to support excluded nodes