[ https://issues.apache.org/jira/browse/HDFS-13635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gabor Bota updated HDFS-13635: ------------------------------ Status: In Progress (was: Patch Available) > Incorrect message when block is not found > ----------------------------------------- > > Key: HDFS-13635 > URL: https://issues.apache.org/jira/browse/HDFS-13635 > Project: Hadoop HDFS > Issue Type: Bug > Components: datanode > Reporter: Wei-Chiu Chuang > Assignee: Gabor Bota > Priority: Major > Attachments: HDFS-13635.001.patch > > > When client opens a file, it asks DataNode to check the blocks' visible > length. If somehow the block is not on the DN, it throws "Cannot append to a > non-existent replica" message, which is incorrect, because > getReplicaVisibleLength() is called for different use, just not for appending > to a block. It should just state "block is not found" > The following stacktrace comes from a CDH5.13, but it looks like the same > warning exists in Apache Hadoop trunk. > {noformat} > 2018-05-29 09:23:41,966 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 2 on 50020, call > org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol.getReplicaVisibleLength > from 10.0.0.14:53217 Call#38334117 Retry#0 > org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException: Cannot > append to a non-existent replica > BP-725378529-10.236.236.8-1410027444173:13276792346 > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.getReplicaInfo(FsDatasetImpl.java:792) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.getReplicaVisibleLength(FsDatasetImpl.java:2588) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.getReplicaVisibleLength(DataNode.java:2756) > at > org.apache.hadoop.hdfs.protocolPB.ClientDatanodeProtocolServerSideTranslatorPB.getReplicaVisibleLength(ClientDatanodeProtocolServerSideTranslatorPB.java:107) > at > org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos$ClientDatanodeProtocolService$2.callBlockingMethod(ClientDatanodeProtocolProtos.java:17873) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2213) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1917) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2211){noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org