Jianyun He created NUTCH-1416:
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Summary: Can not update the index
Key: NUTCH-1416
URL: https://issues.apache.org/jira/browse/NUTCH-1416
Project: Nutch
Issue Type: Bug
Components: indexer
Reporter: Jianyun He
When we update the index,can not guarantee that the contents which be indexed
is the latest.In the class IndexerMapReduce and method reduce(), it has the
following code:
public void reduce(Text key, Iterator<NutchWritable> values,
OutputCollector<Text, NutchDocument> output, Reporter
reporter) throws IOException {
……
} else if (value instanceof ParseData) {
parseData = (ParseData)value;
} else if (value instanceof ParseText) {
parseText = (ParseText)value;
}
……
}
For example,30 days ago,I fetched the web page A,now I fetch it again. Then the
key A will correspond to two ParseData objects(located in different
segments).But in this code,it does not compare the fetch time and simply
overwrites the previous value.So the final value maybe the old one.
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