{"record":{"id":"e7d7ce13349a8fd9","repo":"apache/hadoop","slug":"invalid-entry-all-destination-must-start-with","errorCode":null,"errorMessage":"Invalid entry, all destination must start with / {}","messagePattern":"Invalid entry, all destination must start with / (.+?)","errorType":"validation","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/records/MountTable.java","lineNumber":405,"sourceCode":"      throw new IllegalArgumentException(\n          ERROR_MSG_MUST_START_WITH_BACK_SLASH + this);\n    }\n    if (this.getDestinations() == null || this.getDestinations().size() == 0) {\n      throw new IllegalArgumentException(\n          ERROR_MSG_NO_DEST_PATH_SPECIFIED + this);\n    }\n    for (RemoteLocation loc : getDestinations()) {\n      String nsId = loc.getNameserviceId();\n      if (nsId == null || nsId.length() == 0) {\n        throw new IllegalArgumentException(\n            ERROR_MSG_INVALID_DEST_NS + this);\n      }\n      if (loc.getDest() == null || loc.getDest().length() == 0) {\n        throw new IllegalArgumentException(\n            ERROR_MSG_INVALID_DEST_PATH + this);\n      }\n      if (!loc.getDest().startsWith(\"/\")) {\n        throw new IllegalArgumentException(\n            ERROR_MSG_ALL_DEST_MUST_START_WITH_BACK_SLASH + this);\n      }\n    }\n    if (isFaultTolerant()) {\n      if (getDestinations().size() < 2) {\n        throw new IllegalArgumentException(\n            ERROR_MSG_FAULT_TOLERANT_MULTI_DEST + this);\n      }\n      if (!isAll()) {\n        throw new IllegalArgumentException(\n            ERROR_MSG_FAULT_TOLERANT_ALL + this);\n      }\n    }\n  }\n\n  @Override\n  public long getExpirationMs() {\n    return 0;","sourceCodeStart":387,"sourceCodeEnd":423,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/records/MountTable.java#L387-L423","documentation":"Error \"Invalid entry, all destination must start with / {}\" thrown in apache/hadoop.","triggerScenarios":"MountTable validation: a destination path does not start with '/'.","commonSituations":"Relative destination paths supplied when adding or updating a mount entry.","solutions":["Make every destination path absolute (start with '/').","Fix the entry with dfsrouteradmin -update or remove and re-add it with correct paths."],"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"}