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https://issues.apache.org/jira/browse/HDFS-14058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16709444#comment-16709444
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Chen Liang commented on HDFS-14058:
-----------------------------------
Post some numbers from running DFSIO test, I ran the test for both with
observer read enabled and without observer read, each with three runs.
[^dfsio_crs.no-crs.txt] shows the results from the three runs with observer
read disabled, while [^dfsio_crs.with-crs.txt] shows the results with observer
read enabled. The numbers are very close. Again it is because the cluster is
fairly empty so ANN alone is able to handle the read requests, in this case we
don't gain much performance improvement by adding observer read. The test is to
prove correctness and show there is no performance degradation.
> Test reads from standby on a secure cluster with IP failover
> ------------------------------------------------------------
>
> Key: HDFS-14058
> URL: https://issues.apache.org/jira/browse/HDFS-14058
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: test
> Reporter: Konstantin Shvachko
> Assignee: Chen Liang
> Priority: Major
> Attachments: dfsio_crs.no-crs.txt, dfsio_crs.with-crs.txt
>
>
> Run standard HDFS tests to verify reading from ObserverNode on a secure HA
> cluster with {{IPFailoverProxyProvider}}.
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