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https://issues.apache.org/jira/browse/MAHOUT-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15884597#comment-15884597
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ASF GitHub Bot commented on MAHOUT-1939:
----------------------------------------
Github user andrewpalumbo commented on the issue:
https://github.com/apache/mahout/pull/285
local tests pass on this. @dlyubimov could you please test this against
the CDH version you found a conflict with?
> fastutil version clash with spark distributions
> -----------------------------------------------
>
> Key: MAHOUT-1939
> URL: https://issues.apache.org/jira/browse/MAHOUT-1939
> Project: Mahout
> Issue Type: Bug
> Reporter: Dmitriy Lyubimov
> Assignee: Andrew Palumbo
> Priority: Critical
> Fix For: 0.13.0
>
>
> Version difference in fast util breaks sparse algebra (specifically,
> RandomAccessSparseVector in assign, e.g., vec *= 5).
> observed version in CDH:
>
> file:/opt/cloudera/parcels/CDH-5.9.0-1.cdh5.9.0.p0.21/jars/fastutil-6.3.jar
> mahout uses 7.0.12
> java.lang.UnsupportedOperationException
> at
> it.unimi.dsi.fastutil.ints.AbstractInt2DoubleMap$BasicEntry.setValue(AbstractInt2DoubleMap.java:146)
> at
> org.apache.mahout.math.RandomAccessSparseVector$RandomAccessElement.set(RandomAccessSparseVector.java:235)
> at
> org.apache.mahout.math.VectorView$DecoratorElement.set(VectorView.java:181)
> at
> org.apache.mahout.math.AbstractVector.assign(AbstractVector.java:536)
> at
> org.apache.mahout.math.scalabindings.RLikeVectorOps.$div$eq(RLikeVectorOps.scala:45)
> ...
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