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package eu.dnetlib.data.mapreduce.hbase.broker;
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import java.io.IOException;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.io.Text;
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import org.apache.hadoop.mapreduce.Reducer;
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public class CalculatePersonDistributionStep1Reducer extends Reducer<Text, Text, Text, Text> {
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@Override
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protected void setup(final Context context) throws IOException, InterruptedException {
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super.setup(context);
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}
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@Override
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protected void reduce(final Text key, final Iterable<Text> values, final Context context)
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throws IOException, InterruptedException {
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final String dsID = Bytes.toString(key.getBytes());
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int count = 0;
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String type = null;
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for (Text i : values) {
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final byte[] b = i.copyBytes();
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if (count == 0) {
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if (CalculatePersonDistributionUtils.isDsType(b)) {
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type = CalculatePersonDistributionUtils.getType(b);
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if (type.equals("pubsrepository::institutional")) {
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context.getCounter("REDUCER: Valid Datasource Typologies (all)", type).increment(1);
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} else {
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context.getCounter("REDUCER: Skipped Datasource Typologies", type).increment(1);
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return;
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}
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} else {
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System.err.println("Invalid record in iterable (expected dsType): " + Bytes.toString(b));
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context.getCounter("REDUCER: Invalid record in iterable", "expected dsType").increment(1);
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//context.getCounter("REDUCER: TEST 1", Bytes.toString(key.copyBytes())).increment(1);
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return;
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}
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} else {
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if (CalculatePersonDistributionUtils.isPerson(b)) {
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context.write(
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CalculatePersonDistributionUtils.prepareHdfsKey(dsID, count),
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CalculatePersonDistributionUtils.prepareHdfsValue(dsID, CalculatePersonDistributionUtils.getPersonName(b)));
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} else {
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System.err.println("Invalid record in iterable (expected person): " + Bytes.toString(b));
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context.getCounter("REDUCER: Invalid record in iterable", "expected person").increment(1);
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return;
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}
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if (count == 1) {
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context.getCounter("REDUCER: Valid Datasource Typologies (with persons)", type).increment(1);
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}
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}
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count++;
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}
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if (type != null && count > 0) {
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context.getCounter("REDUCER: Person occurrences", type).increment(count - 1);
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}
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}
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}
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