ASF GitHub Bot commented on FLINK-4624:

Github user s1ck commented on the issue:

    > I'm not following why specifying the TypeInformation is now required with 
the change to using Either. Is the type system failing to handle this properly?
    You are right, I was experimenting with return type definitions for the 
groupReduce and the map call. However, for the map call in 
`Summarization.java:126` the return type definition is required or the job 
fails as it cannot determine the type for `VV`.

> Gelly's summarization algorithm cannot deal with null vertex group values
> -------------------------------------------------------------------------
>                 Key: FLINK-4624
>                 URL: https://issues.apache.org/jira/browse/FLINK-4624
>             Project: Flink
>          Issue Type: Bug
>          Components: Gelly
>            Reporter: Till Rohrmann
>            Assignee: Martin Junghanns
>             Fix For: 1.2.0
> Gelly's {{Summarization}} algorithm cannot handle null values in the 
> `VertexGroupItem.f2`. This behaviour is hidden by using Strings as a vertex 
> value in the {{SummarizationITCase}}, because the {{StringSerializer}} can 
> handle null values. 

This message was sent by Atlassian JIRA

Reply via email to