Adding to an existing zip file in scala

Question

I have a zip file in hdfs and i need to add a file to the zip and save in the same HDFS location. Any examples would be appreciated.

I have the following code.

  val filePattern =  s"${hdfsFolderPath}/${filePath}.txt"
  val zipFilePath = hdfsWrapper.getFileNameFromPattern(s"${targetFilePath}/*.zip")

  if (hdfsWrapper.filter(filePattern).size() > 0)
    {
      Try
      {
        val zipEntry = new ZipEntry(filePattern)
         val zos: ZipOutputStream = new ZipOutputStream(new FileOutputStream(zipFilePath))
        zos.putNextEntry(zipEntry)            
        zos.closeEntry()
        zos.close()
      }
    }

Would like to know if above code is right?

score 0 · Answer 1 · answered Jan 08 '18 at 23:57

I believe that your code would result in the zip file being replaced with a new one containing just the new file. See Appending files to a zip file with Java for an example of adding a file to a zip archive.

I'm not extremely familiar with HDFS, but I suspect that you can't write to that directly either, you probably have to create the new zip file and then replace it in HDFS

Adding to an existing zip file in scala

1 Answers1