{"record":{"id":"5060a7b0e041190c","repo":"apache/hadoop","slug":"problem-removing-versionname-from-this","errorCode":null,"errorMessage":"Problem removing ${versionName} from ${this}","messagePattern":"Problem removing (.+?) from (.+?)","errorType":"exception","errorClass":"IOException","httpStatus":null,"severity":"error","filePath":"hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/JavaKeyStoreProvider.java","lineNumber":477,"sourceCode":"    }\n  }\n\n  @Override\n  public void deleteKey(String name) throws IOException {\n    writeLock.lock();\n    try {\n      Metadata meta = getMetadata(name);\n      if (meta == null) {\n        throw new IOException(\"Key \" + name + \" does not exist in \" + this);\n      }\n      for(int v=0; v < meta.getVersions(); ++v) {\n        String versionName = buildVersionName(name, v);\n        try {\n          if (keyStore.containsAlias(versionName)) {\n            keyStore.deleteEntry(versionName);\n          }\n        } catch (KeyStoreException e) {\n          throw new IOException(\"Problem removing \" + versionName + \" from \" +\n              this, e);\n        }\n      }\n      try {\n        if (keyStore.containsAlias(name)) {\n          keyStore.deleteEntry(name);\n        }\n      } catch (KeyStoreException e) {\n        throw new IOException(\"Problem removing \" + name + \" from \" + this, e);\n      }\n      cache.remove(name);\n      changed = true;\n    } finally {\n      writeLock.unlock();\n    }\n  }\n\n  KeyVersion innerSetKeyVersion(String name, String versionName, byte[] material,","sourceCodeStart":459,"sourceCodeEnd":495,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/JavaKeyStoreProvider.java#L459-L495","documentation":"Inside deleteKey's loop over key versions, keyStore.containsAlias(versionName) or keyStore.deleteEntry(versionName) threw a KeyStoreException, which the provider wraps as IOException 'Problem removing <name>@N from <uri>'. The failure is at the JCE KeyStore level, not the key-name level: the store itself could not perform the entry removal.","triggerScenarios":"A keystore that loaded in a degraded or corrupt state so subsequent operations throw; keystore corruption from an interrupted flush; a security-provider configuration that rejects entry operations; concurrent modification of the underlying file.","commonSituations":"Keystore file truncated by a crashed process or full disk; a keystore written by an incompatible Java version or provider; two processes writing the same jceks file.","solutions":["Confirm the store is readable and healthy: `hadoop key list -provider <uri>` (exercises load and getKeys)","Remove stale *_NEW/_OLD side files from an interrupted flush, then retry the delete","Restore the keystore from backup if entries are corrupt","Ensure a single process writes a given keystore file at a time"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"Set<String> keys = new HashSet<>(provider.getKeys());\nif (!keys.contains(name)) { /* avoid delete entirely */ }","typeGuard":null,"tryCatchPattern":"try { provider.deleteKey(name); } catch (IOException e) { if (e.getCause() instanceof java.security.KeyStoreException) { // keystore-level fault: verify store health, then retry delete once repaired } else { throw e; } }","preventionTips":["Monitor keystore file integrity","Keep backups of keystore files","Single writer per keystore file","Clear stale *_NEW/_OLD files after crashes"],"tags":["java","hadoop","keystore","key-provider","jceks"],"backgroundTag":"keystore-operation-failed","analyzedSha":"2add9630210752f88ceb1bb74eb65e37bf41da8e","analyzedAt":"2026-08-22T19:55:07.957Z","schemaVersion":2},"datasetVersion":"2026-08-22T20:17:22.307Z"}