public abstract class ToEntityPrefsMapper extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>
Modifier and Type | Field and Description |
---|---|
static String |
RATING_SHIFT |
static String |
TRANSPOSE_USER_ITEM |
Modifier and Type | Method and Description |
---|---|
void |
map(org.apache.hadoop.io.LongWritable key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapreduce.Mapper.Context context) |
protected void |
setup(org.apache.hadoop.mapreduce.Mapper.Context context) |
public static final String TRANSPOSE_USER_ITEM
public static final String RATING_SHIFT
protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
setup
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>
public void map(org.apache.hadoop.io.LongWritable key, org.apache.hadoop.io.Text value, org.apache.hadoop.mapreduce.Mapper.Context context) throws IOException, InterruptedException
map
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>
IOException
InterruptedException
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