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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4624) Gelly's summarization algorithm cannot deal with null vertex group values
Date Fri, 23 Sep 2016 06:16:21 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15515544#comment-15515544
] 

ASF GitHub Bot commented on FLINK-4624:
---------------------------------------

Github user s1ck commented on the issue:

    https://github.com/apache/flink/pull/2527
  
    > I'd also like to add a ToNullValue translator that would accept any type and convert
to NullValue.
    
    I don't know if I get this right. Do you mean an additional test case with `NullValue`
as vertex/edge?


> 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. 



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