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https://issues.apache.org/jira/browse/AMBARI-10732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hari Sekhon updated AMBARI-10732:
---------------------------------
Description:
After adding an HDFS storage tiering configuration, upon saving it Ambari
suddenly recommends the configuration of the NameNode heap be drastically
increased from around 3GB to 51GB, even though the archive tier only adds 1/5th
of the capacity compared to the already configured local disk and the NameNode
heap is only 65% used when filling 90% of that local storage.
This seems like a calculation bug, so I've ignored that recommendation and may
increase the NameNode heap to a more sensible 4-5GB if needed.
I'm attaching a screenshot.
Hari Sekhon
http://www.linkedin.com/in/harisekhon
was:
After adding an HDFS storage tiering configuration, on saving it Ambari
suddenly recommends the configuration of the NameNode heap be drastically
increased from around 3GB to 51GB, even though the archive tier only adds 1/5th
of the capacity compared to the already configured local disk and the NameNode
heap is only 65% used when filling 90% of that local storage.
This seems like a calculation bug, so I've ignored that recommendation and may
increase the NameNode heap to a more sensible 4-5GB if needed.
I'm attaching a screenshot.
Hari Sekhon
http://www.linkedin.com/in/harisekhon
> Ambari recommending huge NameNode heap size increase after HDFS storage
> tiering
> -------------------------------------------------------------------------------
>
> Key: AMBARI-10732
> URL: https://issues.apache.org/jira/browse/AMBARI-10732
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.0.0
> Environment: HDP 2.2
> Reporter: Hari Sekhon
> Priority: Minor
> Attachments: Ambari recommending massive NameNode Heap.png
>
>
> After adding an HDFS storage tiering configuration, upon saving it Ambari
> suddenly recommends the configuration of the NameNode heap be drastically
> increased from around 3GB to 51GB, even though the archive tier only adds
> 1/5th of the capacity compared to the already configured local disk and the
> NameNode heap is only 65% used when filling 90% of that local storage.
> This seems like a calculation bug, so I've ignored that recommendation and
> may increase the NameNode heap to a more sensible 4-5GB if needed.
> I'm attaching a screenshot.
> Hari Sekhon
> http://www.linkedin.com/in/harisekhon
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