Eyeris Rodriguez Rueda created NUTCH-2357:
---------------------------------------------
Summary: Index metadata throw Exception because writable object
cannot be cast to Text
Key: NUTCH-2357
URL: https://issues.apache.org/jira/browse/NUTCH-2357
Project: Nutch
Issue Type: Bug
Components: indexer
Affects Versions: 1.12
Environment: It was detected using Linux mint 18.
Reporter: Eyeris Rodriguez Rueda
Priority: Minor
Fix For: 1.13
Index Metadata plugin use this property(see below), to take keys from Datum and
index it.
<property>
<name>index.db.md</name>
<value></value>
<description>
...
</description>
</property>
Using any value from this property one Exception is thrown.
The problem occurs because Writable object can not be cast to Text see this
line.
https://github.com/apache/nutch/blob/master/src/plugin/index-metadata/src/java/org/apache/nutch/indexer/metadata/MetadataIndexer.java#L58
A little change will fix it.
This is the Exception:
**********************************
2017-02-06 18:18:29,969 INFO solr.SolrMappingReader - source: digest dest:
digest
2017-02-06 18:18:29,969 INFO solr.SolrMappingReader - source: tstamp dest:
tstamp
2017-02-06 18:18:29,969 INFO solr.SolrMappingReader - source:
metatag.description dest: description
2017-02-06 18:18:29,969 INFO solr.SolrMappingReader - source: metatag.keywords
dest: keywords
2017-02-06 18:18:30,134 WARN mapred.LocalJobRunner - job_local15168888_0001
java.lang.Exception: java.lang.ClassCastException:
org.apache.hadoop.io.IntWritable cannot be cast to org.apache.hadoop.io.Text
at
org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:529)
Caused by: java.lang.ClassCastException: org.apache.hadoop.io.IntWritable
cannot be cast to org.apache.hadoop.io.Text
at
org.apache.nutch.indexer.metadata.MetadataIndexer.filter(MetadataIndexer.java:58)
at
org.apache.nutch.indexer.IndexingFilters.filter(IndexingFilters.java:51)
at
org.apache.nutch.indexer.IndexerMapReduce.reduce(IndexerMapReduce.java:330)
at
org.apache.nutch.indexer.IndexerMapReduce.reduce(IndexerMapReduce.java:56)
at
org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:444)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:392)
at
org.apache.hadoop.mapred.LocalJobRunner$Job$ReduceTaskRunnable.run(LocalJobRunner.java:319)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2017-02-06 18:18:30,777 ERROR indexer.IndexingJob - Indexer:
java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:836)
at org.apache.nutch.indexer.IndexingJob.index(IndexingJob.java:145)
at org.apache.nutch.indexer.IndexingJob.run(IndexingJob.java:228)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.nutch.indexer.IndexingJob.main(IndexingJob.java:237)
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