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https://issues.apache.org/jira/browse/HDFS-13488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16455699#comment-16455699
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Yiqun Lin commented on HDFS-13488:
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Thanks for the response, [~elgoiri]. Some comments and questions from me:
* Rebase the patch. As {{FederationTestUtils #simulateSlowNamenode}} already
exists.
* We would disable client.reject.overload by default. Otherwise, it will be an
incompatible change.
* Not so sure I am understanding the UT correctly. Would you mind making some
more comments for the behavior in the UT? For example, why are we ensure the
proxyOps0 is more than 8.
{noformat}
assertTrue("Router 0 operations: " + proxyOps0, proxyOps0 >= 8);
{noformat}
> RBF: Reject requests when a Router is overloaded
> ------------------------------------------------
>
> Key: HDFS-13488
> URL: https://issues.apache.org/jira/browse/HDFS-13488
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Íñigo Goiri
> Assignee: Íñigo Goiri
> Priority: Major
> Attachments: HDFS-13488.000.patch, HDFS-13488.001.patch
>
>
> A Router might be overloaded when handling special cases (e.g. a slow
> subcluster). The Router could reject the requests and the client could try
> with another Router. We should leverage the Standby mechanism for this.
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