Pat Ferrel created MAHOUT-1674:
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Summary: A'A fails getting with an index out of range for a row
vector
Key: MAHOUT-1674
URL: https://issues.apache.org/jira/browse/MAHOUT-1674
Project: Mahout
Issue Type: Bug
Components: s
Affects Versions: 0.10.0
Reporter: Pat Ferrel
Assignee: Dmitriy Lyubimov
Priority: Critical
Fix For: 0.10.0
A'A and possibly A'B can fail with an index out of bounds on the row vector.
This seems related to partitioning where some partitions may be empty.
This can be reproduce with the attached data as input into
spark-itemsimilarity. This is only A data and the one large csv will complete
correctly but passing in the directory of part files will exhibit the error.
The data is identical except in the number of files that are used to contain
the data.
The error occurs using the local raw filesystem and with master = local and is
pretty fast to reach.
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