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https://issues.apache.org/jira/browse/NUTCH-1477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13484148#comment-13484148
]
Julien Nioche commented on NUTCH-1477:
--------------------------------------
I found in
http://mail-archives.apache.org/mod_mbox/avro-user/200910.mbox/%3c4ae78503.50...@apache.org%3E
that we probably need to explicitly allow for null values in the schema (see
attachment).
I tried recompiling the schemas with {{ant compile-avro-schema}} but the
classes generated do not compile and are nowhere near as complete as the
original ones. More worryingly the same is true with the original schema. I
assumed that the code in org.apache.nutch.storage could be generated from the
schemas.
Any idea?
> NPE when injecting with DataFileAvroStore
> -----------------------------------------
>
> Key: NUTCH-1477
> URL: https://issues.apache.org/jira/browse/NUTCH-1477
> Project: Nutch
> Issue Type: Bug
> Components: storage
> Affects Versions: 2.1
> Environment: Java 1.6.0_35
> Reporter: Mike Baranczak
> Assignee: Julien Nioche
> Fix For: 2.2
>
> Attachments: webpage.avsc
>
>
> Fresh installation of Nutch 2.1, configured to use DataFileAvroStore.
> Injection job throws NullPointerException, see below. No error when I switch
> to MemStore.
> java.lang.NullPointerException
> at org.apache.avro.io.BinaryEncoder.writeString(BinaryEncoder.java:133)
> at
> org.apache.avro.generic.GenericDatumWriter.writeString(GenericDatumWriter.java:176)
> at
> org.apache.avro.generic.GenericDatumWriter.writeString(GenericDatumWriter.java:171)
> at
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:72)
> at
> org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:89)
> at
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:62)
> at
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:55)
> at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:245)
> at
> org.apache.gora.avro.store.DataFileAvroStore.put(DataFileAvroStore.java:54)
> at
> org.apache.gora.mapreduce.GoraRecordWriter.write(GoraRecordWriter.java:60)
> at
> org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:639)
> at
> org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80)
> at
> org.apache.nutch.crawl.InjectorJob$UrlMapper.map(InjectorJob.java:185)
> at org.apache.nutch.crawl.InjectorJob$UrlMapper.map(InjectorJob.java:85)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
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