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https://issues.apache.org/jira/browse/HDFS-9363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14990146#comment-14990146
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Lei (Eddy) Xu commented on HDFS-9363:
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+1. Thanks [~twu].
> Add fetchReplica() to FsDatasetTestUtils()
> ------------------------------------------
>
> Key: HDFS-9363
> URL: https://issues.apache.org/jira/browse/HDFS-9363
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: HDFS, test
> Affects Versions: 2.7.1
> Reporter: Tony Wu
> Assignee: Tony Wu
> Priority: Minor
> Attachments: HDFS-9363.001.patch
>
>
> {{FsDatasetTestUtils()}} abstracts away the details in {{FsDataset}} to allow
> writing generic tests regardless of underlying {{FsDataset}} implementations.
> We can add a {{fetchReplica()}} method to allow some HDFS tests to avoid
> using {{FsDatasetTestUtil#fetchReplicaInfo()}}, which assumes FsDatasetImpl
> is the only implementation of FsDataset.
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