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https://issues.apache.org/jira/browse/ARROW-401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15723000#comment-15723000
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Jacques Nadeau commented on ARROW-401:
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I wrote it based initially on the code here:
https://github.com/mapr/drill-test-framework/blob/master/framework/src/main/java/org/apache/drill/test/framework/ColumnList.java#L115
Don't remember offhand the f1 != 0. What are the rules about NaN and Infinite
in the case of a floating point negation?
> [Java] Floating point vectors should do an approximate comparison in
> integration tests
> --------------------------------------------------------------------------------------
>
> Key: ARROW-401
> URL: https://issues.apache.org/jira/browse/ARROW-401
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Wes McKinney
> Assignee: Julien Le Dem
> Priority: Blocker
>
> Floating point precision rears its ugly head:
> {code}
> Incompatible files
> Different values in column:
> Field{name=float64_nullable, type=FloatingPoint{2}, children=[],
> layout=TypeLayout{[{width=1,type=VALIDITY}, {width=64,type=DATA}]}} at index
> 1: 912.4140000000002 != 912.414
> 10:23:45.863 [main] ERROR org.apache.arrow.tools.Integration - Incompatible
> files
> java.lang.IllegalArgumentException: Different values in column:
> Field{name=float64_nullable, type=FloatingPoint{2}, children=[],
> layout=TypeLayout{[{width=1,type=VALIDITY}, {width=64,type=DATA}]}} at index
> 1: 912.4140000000002 != 912.414
> {code}
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