[NUTCH-1675] NutchField to support long

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.8
• Component/s: indexer
• Patch Info: Patch Available
• Assignee: Markus Jelsma
• Reporter: Markus Jelsma
• Created: 26/Nov/13 12:09
• Updated: 13/Mar/24 14:50
• Resolved: 07/Jan/14 12:21

Description

NutchField has no support for Long in readfields. Usually this is not a problem because in reducers it is only written to the output. But when using NutchField in mappers, then a reducer cannot read a Long.

java.lang.RuntimeException: problem advancing post rec#0
        at org.apache.hadoop.mapred.Task$ValuesIterator.next(Task.java:1217)
        at org.apache.hadoop.mapred.ReduceTask$ReduceValuesIterator.moveToNext(ReduceTask.java:250)
        at org.apache.hadoop.mapred.ReduceTask$ReduceValuesIterator.next(ReduceTask.java:246)
        at org.apache.nutch.fetcher.Fetcher$FetcherReducer.reduce(Fetcher.java:1440)
        at org.apache.nutch.fetcher.Fetcher$FetcherReducer.reduce(Fetcher.java:1401)
        at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:522)
        at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:421)
        at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:398)
Caused by: java.io.EOFException
        at java.io.DataInputStream.readFully(DataInputStream.java:197)
        at org.apache.hadoop.io.Text.readString(Text.java:402)
        at org.apache.nutch.indexer.NutchField.readFields(NutchField.java:89)
        at org.apache.nutch.indexer.NutchDocument.readFields(NutchDocument.java:112)
        at org.apache.nutch.indexer.NutchIndexAction.readFields(NutchIndexAction.java:81)
        at org.apache.nutch.util.GenericWritableConfigurable.readFields(GenericWritableConfigurable.java:54)
        at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:67)
        at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:40)
        at org.apache.hadoop.mapred.Task$ValuesIterator.readNextValue(Task.java:1276)
        at org.apache.hadoop.mapred.Task$ValuesIterator.next(Task.java:1214)
        ... 7 more