Tom Lampert created MAHOUT-1625:
-----------------------------------
Summary: lucene2seq: failure to convert a document that does not
contain a field (the field is not required)
Key: MAHOUT-1625
URL: https://issues.apache.org/jira/browse/MAHOUT-1625
Project: Mahout
Issue Type: Bug
Affects Versions: 1.0
Environment: CentOS 6.5
Reporter: Tom Lampert
Priority: Minor
Fix For: 1.0
When trying to convert a lucene index in which not all fields are required (and
therefore in some documents the field does not exist) the following exception
is thrown:
java.lang.IllegalArgumentException: Field 'MISSING_FIELDNAME' does not exist in
the index
at
org.apache.mahout.text.LuceneIndexHelper.fieldShouldExistInIndex(LuceneIndexHelper.java:36)
at
org.apache.mahout.text.LuceneSegmentRecordReader.initialize(LuceneSegmentRecordReader.java:63)
at
org.apache.mahout.text.LuceneSegmentInputFormat.createRecordReader(LuceneSegmentInputFormat.java:76)
at
org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:492)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:735)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1557)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
It would be good to either ignore missing field values by default or to have an
additional parameter that turns ignoring them on or off.
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