All, For the first time I have tried to use the class ArrayWritable. All goes well enough until the Reducer tries to do a write. Then, I get the following exception:
java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.io.ArrayWritable.<init>() ... >From the reducer, the relevant code. // Prepare the output. IntWritable[] out = new IntWritable[5]; // populate output array. ctx.write(key, new ArrayWritable(IntWritable.class, out)); // If I comment the above line out, the job runs without issue. Can anyone see what I'm doing wrong? -- Geoffry Roberts