title: Calculating input splits in MapReduce
body: <p>A file is stored in HDFS of size <strong>260 MB</strong> whereas the HDFS default block size is <strong>64 MB</strong>. Upon performing a map-reduce job against this file, I found the number of input splits it creates is only <strong>4</strong>. how did it calculated.? where is the rest <strong>4 MB</strong>.? Any input is much appreciated.</p>