{"record":{"id":"c18d18e6e8f4d9e0","repo":"apache/hadoop","slug":"unsupported-block-buffer-name-c18d18","errorCode":null,"errorMessage":"Unsupported block buffer \"<name>\"","messagePattern":"Unsupported block buffer \"<name>\"","errorType":"exception","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ADataBlocks.java","lineNumber":96,"sourceCode":"\n  /**\n   * Create a factory.\n   * @param owner factory owner\n   * @param name factory name -the option from {@link Constants}.\n   * @return the factory, ready to be initialized.\n   * @throws IllegalArgumentException if the name is unknown.\n   */\n  static BlockFactory createFactory(StoreContext owner,\n      String name) {\n    switch (name) {\n    case Constants.FAST_UPLOAD_BUFFER_ARRAY:\n      return new ArrayBlockFactory(owner);\n    case Constants.FAST_UPLOAD_BUFFER_DISK:\n      return new DiskBlockFactory(owner);\n    case Constants.FAST_UPLOAD_BYTEBUFFER:\n      return new ByteBufferBlockFactory(owner);\n    default:\n      throw new IllegalArgumentException(\"Unsupported block buffer\" +\n          \" \\\"\" + name + '\"');\n    }\n  }\n\n  /**\n   * The output information for an upload.\n   * <p>\n   * The data is accessed via the content provider; other constructors\n   * create the appropriate content provider for the data.\n   * <p>\n   * When {@link #close()} is called, the content provider is itself closed.\n   */\n  public static final class BlockUploadData implements Closeable {\n\n    /**\n     * The content provider.\n     */\n    private final UploadContentProviders.BaseContentProvider<?> contentProvider;","sourceCodeStart":78,"sourceCodeEnd":114,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ADataBlocks.java#L78-L114","documentation":"Error \"Unsupported block buffer \"<name>\"\" thrown in apache/hadoop.","triggerScenarios":"Thrown at hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ADataBlocks.java:96 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set fs.s3a.data.blocks.buffer to a supported value (disk, array, or bytebuffer)."],"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"}