What is the method to delete empty files in Hadoop?

2 years ago
William Carter
2 minutes

One way to delete empty files in Hadoop is by using command line tools or through a programming interface.

  1. Delete empty files using command line tools.
  2. Delete empty files using the Hadoop fs command. For example, use the following command to delete the empty file named file.txt: hadoop fs -rm file.txt
  3. Delete empty files using a programming interface.
  4. To delete an empty file using the FileSystem class in Hadoop’s Java API, first create a FileSystem object and then use the delete method. Here is an example of Java code to delete an empty file:

    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.FileSystem;
    import org.apache.hadoop.fs.Path;

    public class DeleteEmptyFile {
    public static void main(String[] args) throws Exception {
    // Create a Configuration object
    Configuration conf = new Configuration();

    // Get the FileSystem object
    FileSystem fs = FileSystem.get(conf);

    // Delete the empty file
    Path filePath = new Path(“hdfs://localhost:9000/path/to/file.txt”);
    boolean success = fs.delete(filePath, false);

    if (success) {
    System.out.println(“File deleted successfully!”);
    } else {
    System.out.println(“Failed to delete the file!”);
    }

    // Close the FileSystem object
    fs.close();
    }
    }

    Please note that the “hdfs://localhost:9000/path/to/file.txt” in the code above should be replaced with the actual path of the empty file you want to delete.

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