Processing image in hdfs

Question

Suppose assume we have 1GB image file, we stored into the HDFS interms of blocks. how will be process the data without losing the information (assume we have to process the image as whole, when we split the image and process, will we get the fault output)?

Answer 1

If your block size is 64 MB, most probably HDFS would have split your image file into chunks and replicated it across the cluster, depending on what your cluster configuration is. Image processing is done in hadoop using a hadoop component known as HIPI (Hadoop Image Processing Interface) . This component makes sure that you get the original image when you process and split image