我定义了Mapper，KEYOUT类型为IntWritable：
public static class Map extends Mapper<LongWritable, Text, IntWritable, IntArrayWritable>
我Mapper的{{1}}类型为Context。
当我将鼠标移到我的org.apache.hadoop.mapreduce.Mapper.Context<LongWritable, Text, IntWritable, IntArrayWritable>函数上时，它会告诉我context.write期望write，但在同一行上，我得到了这个hadoop错误：
(IntWritable arg0, IntArrayWritable arg1)为什么java.io.IOException: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.IntWritable
期望值为Context？