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https://issues.apache.org/jira/browse/GIRAPH-126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13188578#comment-13188578
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Avery Ching commented on GIRAPH-126:
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Agree with Jakob. Thanks Andrei, every memory improvement helps!
> Use Collections.emptyList() in BasicRPCCommunications.java
> ----------------------------------------------------------
>
> Key: GIRAPH-126
> URL: https://issues.apache.org/jira/browse/GIRAPH-126
> Project: Giraph
> Issue Type: Improvement
> Reporter: André Kelpe
> Assignee: André Kelpe
> Priority: Minor
> Attachments: GIRAPH-126.patch
>
>
> I am doing some tests with giraph and I am having some memory problems. While
> I was browsing through the codebase I saw that you are allocating a new
> ArrayList (which has an underlying array of 10 elements) for each Vertex,
> that has no Messages to be delivered. That's a waste of memory and time. This
> patch replaces it with the EMPTY_LIST of the Collections utility class.
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