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https://issues.apache.org/jira/browse/HDFS-15579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Janus Chow updated HDFS-15579:
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Attachment: HDFS-15579-001.patch
> RBF: The constructor of PathLocation may got some misunderstanding
> ------------------------------------------------------------------
>
> Key: HDFS-15579
> URL: https://issues.apache.org/jira/browse/HDFS-15579
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Reporter: Janus Chow
> Priority: Minor
> Attachments: HDFS-15579-001.patch
>
>
> There is a constructor of PathLocation as follows, it's for creating a new
> PathLocation with a prioritised nsId.
>
> {code:java}
> public PathLocation(PathLocation other, String firstNsId) {
> this.sourcePath = other.sourcePath;
> this.destOrder = other.destOrder;
> this.destinations = orderedNamespaces(other.destinations, firstNsId);
> }
> {code}
> When I was reading the code of MultipleDestinationMountTableResolver, I
> thought this constructor was to create a PathLocation with an override
> destination. It took me a while before I realize this is a constructor to
> sort the destinations inside.
> Maybe I think this constructor can be more clear about its usage?
>
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