public class WordTimeperiodValueMapper extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Text>
Constructor and Description |
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WordTimeperiodValueMapper() |
Modifier and Type | Method and Description |
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protected static void |
loadOptions(org.apache.hadoop.mapreduce.Mapper.Context context) |
protected void |
map(org.apache.hadoop.io.Text word,
org.apache.hadoop.io.BytesWritable value,
org.apache.hadoop.mapreduce.Mapper.Context context)
for each word, read its time period and quantised to a finance time period
emit for each word a quantised time period, the data needed to calculate DF-IDF at that time and the value from finance
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protected void |
setup(org.apache.hadoop.mapreduce.Mapper.Context context) |
public WordTimeperiodValueMapper()
protected static void loadOptions(org.apache.hadoop.mapreduce.Mapper.Context context) throws IOException
IOException
protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context) throws IOException, InterruptedException
setup
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Text>
IOException
InterruptedException
protected void map(org.apache.hadoop.io.Text word, org.apache.hadoop.io.BytesWritable value, org.apache.hadoop.mapreduce.Mapper.Context context) throws IOException, InterruptedException
map
in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.Text>
IOException
InterruptedException