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https://issues.apache.org/jira/browse/FLINK-7291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske updated FLINK-7291:
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Description:
The implementation of {{getArity()}} in {{ListTypeInfo}} and {{MapTypeInfo}}
returns 0 but should return 1.
The implementation of {{MapTypeInfo.getTotalFields()}} is also incorrect and
must return 1 instead of 2.
The JavaDocs of {{TypeInformation.getArity()}} and
{{TypeInformation.getTotalFields()}} should be extended as well to avoid future
confusion about this method. The method returns the arity for current type. For
atomic types, this is 1 for composite types, the number of non-nested fields
(or number of fields on the first nesting-level).
was:
The implementation of {{getArity()}} in {{ListTypeInfo}} and {{MapTypeInfo}}
returns 0 but should return 1.
The JavaDocs of {{TypeInformation.getArity()}} should be extended as well to
avoid future confusion about this method. The method returns the arity for
current type. For atomic types, this is 1 for composite types, the number of
non-nested fields (or number of fields on the first nesting-level).
> Incorrect return value of getArity() in ListTypeInfo and MapTypeInfo
> --------------------------------------------------------------------
>
> Key: FLINK-7291
> URL: https://issues.apache.org/jira/browse/FLINK-7291
> Project: Flink
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.3.1, 1.4.0
> Reporter: Fabian Hueske
>
> The implementation of {{getArity()}} in {{ListTypeInfo}} and {{MapTypeInfo}}
> returns 0 but should return 1.
> The implementation of {{MapTypeInfo.getTotalFields()}} is also incorrect and
> must return 1 instead of 2.
> The JavaDocs of {{TypeInformation.getArity()}} and
> {{TypeInformation.getTotalFields()}} should be extended as well to avoid
> future confusion about this method. The method returns the arity for current
> type. For atomic types, this is 1 for composite types, the number of
> non-nested fields (or number of fields on the first nesting-level).
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