Henrique Barros created HDFS-13833:
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Summary: Failed to choose from local rack (location = /default);
the second replica is not found, retry choosing ramdomly
Key: HDFS-13833
URL: https://issues.apache.org/jira/browse/HDFS-13833
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Henrique Barros
I'm having a random problem with blocks replication with Hadoop 2.6.0-cdh5.15.0
With Cloudera CDH-5.15.0-1.cdh5.15.0.p0.21
In my case we are getting this error very randomly (after some hours) and with
only one Datanode (for now, we are trying this cloudera cluster for a POC)
Here is the Log.
{code:java}
Choosing random from 1 available nodes on node /default, scope=/default,
excludedScope=null, excludeNodes=[]
2:38:20.527 PM DEBUG NetworkTopology
Choosing random from 0 available nodes on node /default, scope=/default,
excludedScope=null, excludeNodes=[192.168.220.53:50010]
2:38:20.527 PM DEBUG NetworkTopology
chooseRandom returning null
2:38:20.527 PM DEBUG BlockPlacementPolicy
[
Node /default/192.168.220.53:50010 [
Datanode 192.168.220.53:50010 is not chosen since the node is too busy (load:
8 > 0.0).
2:38:20.527 PM DEBUG NetworkTopology
chooseRandom returning 192.168.220.53:50010
2:38:20.527 PM INFO BlockPlacementPolicy
Not enough replicas was chosen. Reason:{NODE_TOO_BUSY=1}
2:38:20.527 PM DEBUG StateChange
closeFile:
/mobi.me/development/apps/flink/checkpoints/a5a6806866c1640660924ea1453cbe34/chk-2118/eef8bff6-75a9-43c1-ae93-4b1a9ca31ad9
with 1 blocks is persisted to the file system
2:38:20.527 PM DEBUG StateChange
*BLOCK* NameNode.addBlock: file
/mobi.me/development/apps/flink/checkpoints/a5a6806866c1640660924ea1453cbe34/chk-2118/1cfe900d-6f45-4b55-baaa-73c02ace2660
fileId=129628869 for DFSClient_NONMAPREDUCE_467616914_65
2:38:20.527 PM DEBUG BlockPlacementPolicy
Failed to choose from local rack (location = /default); the second replica is
not found, retry choosing ramdomly
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy$NotEnoughReplicasException:
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:784)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:694)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseLocalRack(BlockPlacementPolicyDefault.java:601)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseLocalStorage(BlockPlacementPolicyDefault.java:561)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTargetInOrder(BlockPlacementPolicyDefault.java:464)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:395)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:270)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:142)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:158)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1715)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3505)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:694)
at
org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.addBlock(AuthorizationProviderProxyClientProtocol.java:219)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:507)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2281)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2277)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2275)
{code}
This part makes no sense at all:
{code:java}
load: 8 > 0.0{code}
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