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https://issues.apache.org/jira/browse/HDFS-16850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17636373#comment-17636373
 ] 

sinlang commented on HDFS-16850:
--------------------------------

if only one rack in hadoop cluster, it`s proprably not show this info or just 
skip check rack awareness , some time is too boring

 

> BlockPlacementPolicy: Not enough replicas was chosen. Reason:{NO_REQUIRED 
> _STORAGE_TYPE=1}
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-16850
>                 URL: https://issues.apache.org/jira/browse/HDFS-16850
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs
>    Affects Versions: 3.2.4
>            Reporter: sinlang
>            Priority: Major
>
> too much org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: 
> Not enough replicas was chosen. Reason:\{NO_REQUIRED _STORAGE_TYPE=1}
> info is show, as detail bellow:
> 2022-11-19 13:20:48,727 DEBUG 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: [
>   Datanode None is not chosen since required storage types are unavailable  
> for storage type DISK.
> 2022-11-19 13:20:48,728 INFO 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Not 
> enough replicas was chosen. Reason:\{NO_REQUIRED _STORAGE_TYPE=1}
> 2022-11-19 13:20:48,728 DEBUG 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Failed to 
> choose remote rack (location = ~/default
> -rack), fallback to local rack
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy$NotEnoughReplicasException:
>  
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:883)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack(BlockPlacementPolicyDefault.java:743)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTargetInOrder(BlockPlacementPolicyDefault.java:523)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:441)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:311)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:150)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:175)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:2268)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:294)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2820)
>         at 
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:910)
>         at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:577)
>         at 
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>         at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:549)
>         at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:518)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1086)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1035)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:963)
>         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:1762)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2960)
> 2022-11-19 13:20:48,943 DEBUG 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: [
>   Datanode None is not chosen since required storage types are unavailable  
> for storage type DISK.
> 2022-11-19 13:20:48,943 INFO 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Not 
> enough replicas was chosen. Reason:
> {NO_REQUIRED _STORAGE_TYPE=1}
> 2022-11-19 13:20:48,943 DEBUG 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Failed to 
> choose remote rack (location = ~/default
> -rack), fallback to local rack
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy$NotEnoughReplicasException:
>  
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:883)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack(BlockPlacementPolicyDefault.java:743)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTargetInOrder(BlockPlacementPolicyDefault.java:523)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:441)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:311)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:150)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:175)
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:2268)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:294)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2820)
>         at 
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:910)
>         at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java
> :577)
> :



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