public void run() throws Exception {
long startTime = System.currentTimeMillis();
JobConf conf = new JobConf(ItemCFJob.class);
conf.setJobName("ItemCF" + System.currentTimeMillis());
conf.setNumMapTasks(10);
conf.set(
"io.serializations",
"org.apache.hadoop.io.serializer.JavaSerialization,"
+ "org.apache.hadoop.io.serializer.WritableSerialization");
StringBuilder sb = new StringBuilder();
sb.append("--input ").append(input);
sb.append(" --output ").append(output);
if (flag) {
sb.append(" --booleanData true");
} else {
sb.append(" --booleanData false");
}
sb.append(" --similarityClassname " + Constants.mahout_similarityclassname);
sb.append(" --tempDir ").append(tmp);
String[] args = sb.toString().split(" ");
RecommenderJob job = new RecommenderJob();
job.setConf(conf);
job.run(args);
long endTime = System.currentTimeMillis();
logger.info(
"recommdation job ["
+ conf.getJobName()
+ "] run finish. it costs"
+ (endTime - startTime) / 1000
+ "s.");
}
