SplitFile gives casting error - hadoop

Question

I have placed a mp4 file on hdfs and trying to analyze it directly i have a class name as VideoRecordReader in which it gives the casting error. Below is the description of Error.
You have loaded library /usr/local/lib/libopencv_core.so.3.0.0 which
might have disabled stack guard. The VM will try to fix the stack
guard now. attempt_201607261400_0011_m_000000_1: It's highly
recommended that you fix the library with 'execstack -c ', or
link it with '-z noexecstack'. 16/07/26 17:32:27 INFO
mapred.JobClient: Task Id : attempt_201607261400_0011_m_000000_2,
Status : FAILED java.lang.ClassCastException:
org.apache.hadoop.mapreduce.lib.input.FileSplit cannot be cast to
org.apache.hadoop.mapred.FileSplit at
com.finalyearproject.VideoRecordReader.initialize(VideoRecordReader.java:65)
at
org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:521)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:364) at
org.apache.hadoop.mapred.Child$4.run(Child.java:255) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:422) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
Here is the code of SplitFile.
public void initialize(InputSplit genericSplit, TaskAttemptContext context)
throws IOException, InterruptedException {
FileSplit split = (FileSplit) genericSplit;
Configuration job = context.getConfiguration();
start = 0;
end = 1;
final Path file = split.getPath();
FileSystem fs = file.getFileSystem(job);
fileIn = fs.open(split.getPath());
filename = split.getPath().getName();
byte [] b = new byte[fileIn.available()];
fileIn.readFully(b);
video = new VideoObject(b);
}
kindly help me thank u best regards.

Answer 1

Its likely you're mixing the mapred and mapreduce APIs together.
Its complaining that you're trying to cast org.apache.hadoop.mapreduce.lib.input.FileSplit to org.apache.hadoop.mapred.FileSplit.
You need to make sure that you generally dont mix imports between the two APIs.
So check if the org.apache.hadoop.mapred.FileSplit has been imported and change it to org.apache.hadoop.mapreduce.lib.input.FileSplit.