{"record":{"id":"1f171c31f37f25a3","repo":"apache/hadoop","slug":"channelmodestring-is-not-a-valid-value-for-fs","errorCode":null,"errorMessage":"channelModeString + \" is not a valid value for fs.s3a.ssl.channel.mode","messagePattern":"channelModeString \\+ \" is not a valid value for fs\\.s3a\\.ssl\\.channel\\.mode","errorType":"validation","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/NetworkBinding.java","lineNumber":77,"sourceCode":"   * @param httpClientBuilder the http client builder.\n   * @throws IOException if there is an error while initializing the\n   * {@code SSLSocketFactory} other than classloader problems.\n   */\n  public static void bindSSLChannelMode(Configuration conf,\n      ApacheHttpClient.Builder httpClientBuilder) throws IOException {\n\n    // Validate that SSL_CHANNEL_MODE is set to a valid value.\n    String channelModeString = conf.getTrimmed(\n            SSL_CHANNEL_MODE, DEFAULT_SSL_CHANNEL_MODE.name());\n    DelegatingSSLSocketFactory.SSLChannelMode channelMode = null;\n    for (DelegatingSSLSocketFactory.SSLChannelMode mode :\n            DelegatingSSLSocketFactory.SSLChannelMode.values()) {\n      if (mode.name().equalsIgnoreCase(channelModeString)) {\n        channelMode = mode;\n      }\n    }\n    if (channelMode == null) {\n      throw new IllegalArgumentException(channelModeString +\n              \" is not a valid value for \" + SSL_CHANNEL_MODE);\n    }\n\n    DelegatingSSLSocketFactory.initializeDefaultFactory(channelMode);\n    try {\n      // use reflection to load in our own binding class.\n      // this is *probably* overkill, but it is how we can be fully confident\n      // that no attempt will be made to load/link to the AWS Shaded SDK except\n      // within this try/catch block\n      Class<? extends ConfigureAWSSocketFactory> clazz =\n          (Class<? extends ConfigureAWSSocketFactory>) Class.forName(BINDING_CLASSNAME);\n      clazz.getConstructor()\n          .newInstance()\n          .configureSocketFactory(httpClientBuilder, channelMode);\n    } catch (ClassNotFoundException | NoSuchMethodException |\n            IllegalAccessException | InstantiationException |\n            InvocationTargetException | LinkageError  e) {\n      LOG.debug(\"Unable to create class {}, value of {} will be ignored\",","sourceCodeStart":59,"sourceCodeEnd":95,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/NetworkBinding.java#L59-L95","documentation":"Error \"channelModeString + \" is not a valid value for fs.s3a.ssl.channel.mode\" thrown in apache/hadoop.","triggerScenarios":"Thrown at hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/NetworkBinding.java:77 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set fs.s3a.ssl.channel.mode to a valid value such as default or openssl."],"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":"2026-08-23T01:17:44.959Z"}