{"record":{"id":"5b53d76ec6330ac6","repo":"apache/hadoop","slug":"failed-to-start-backup-services","errorCode":null,"errorMessage":"Failed to start backup services","messagePattern":"Failed to start backup services","errorType":"exception","errorClass":"ServiceFailedException","httpStatus":null,"severity":"error","filePath":"hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/BackupState.java","lineNumber":53,"sourceCode":"  }\n\n  @Override // HAState\n  public void checkOperation(HAContext context, OperationCategory op)\n      throws StandbyException {\n    context.checkOperation(op);\n  }\n\n  @Override // HAState\n  public boolean shouldPopulateReplQueues() {\n    return false;\n  }\n\n  @Override // HAState\n  public void enterState(HAContext context) throws ServiceFailedException {\n    try {\n      context.startActiveServices();\n    } catch (IOException e) {\n      throw new ServiceFailedException(\"Failed to start backup services\", e);\n    }\n  }\n\n  @Override // HAState\n  public void exitState(HAContext context) throws ServiceFailedException {\n    try {\n      context.stopActiveServices();\n    } catch (IOException e) {\n      throw new ServiceFailedException(\"Failed to stop backup services\", e);\n    }\n  }\n\n  @Override // HAState\n  public void prepareToExitState(HAContext context) throws ServiceFailedException {\n    context.prepareToStopStandbyServices();\n  }\n}\n","sourceCodeStart":35,"sourceCodeEnd":71,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/BackupState.java#L35-L71","documentation":"Error \"Failed to start backup services\" thrown in apache/hadoop.","triggerScenarios":"NameNode transition to backup state when backup services (Checkpoint/BackupNode components) fail to start.","commonSituations":"See trigger scenarios.","solutions":["Check the BackupNode log for the underlying cause (checkpoint dir, RPC bind failure, registration error) and fix the configuration.","Verify dfs.namenode.backup.address / http-address ports are free and the checkpoint directories are valid."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2add9630210752f88ceb1bb74eb65e37bf41da8e","analyzedAt":"2026-08-22T19:55:07.957Z","schemaVersion":2},"datasetVersion":"2026-08-22T20:17:22.307Z"}