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From "Tom Beerbower" <tbeerbo...@hortonworks.com>
Subject Re: Review Request 22941: API call to /hosts to get information about 10 hosts takes more than 30 seconds on 2K-node cluster
Date Thu, 26 Jun 2014 18:35:54 GMT


> On June 26, 2014, 2:33 p.m., Tom Beerbower wrote:
> > ambari-server/src/main/java/org/apache/ambari/server/api/query/QueryImpl.java, lines
346-349
> > <https://reviews.apache.org/r/22941/diff/5/?file=618291#file618291line346>
> >
> >     So the comment says that we want to build a new resource set if there is a page
request and the predicate doesn't contain properties that haven't been set yet.  Is that what
is being tested for?  Don't we need to worry about this case? ...
> >     
> >     Get a page of 10 hosts on a 1000 host cluster where metrics/cpu/cpu_num<2
> >     
> >     There is a page request and no sub-resource predicate so with the code as you
have it, I think it would build a page of resources that could get thrown out after they are
populated with the metrics/cpu/cpu_num values.  
> >     
> >     That is what the predicateRequiresPopulation() check was for in my earlier comment.
> >     
> >
> 
> Dmytro Sen wrote:
>     Checking
> 
> Dmytro Sen wrote:
>     Now using your version

ok, let me know when there is a new patch to review.  Thanks!


- Tom


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/22941/#review46742
-----------------------------------------------------------


On June 26, 2014, 12:51 p.m., Dmytro Sen wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/22941/
> -----------------------------------------------------------
> 
> (Updated June 26, 2014, 12:51 p.m.)
> 
> 
> Review request for Ambari, Sid Wagle and Tom Beerbower.
> 
> 
> Bugs: AMBARI-6263
>     https://issues.apache.org/jira/browse/AMBARI-6263
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> On a large cluster, calls to /hosts are taking more than 30 seconds.
> This severely impacts the responsiveness of the UI for the Hosts page (it takes >
30 seconds to filter, navigate through paged hosts, etc).
> The times shown are latency only (does not include download time).
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/java/org/apache/ambari/server/api/query/QueryImpl.java 8017844

>   ambari-server/src/main/java/org/apache/ambari/server/api/services/BaseRequest.java
b7893c5 
>   ambari-server/src/main/java/org/apache/ambari/server/controller/internal/AbstractProviderModule.java
711e64e 
>   ambari-server/src/main/java/org/apache/ambari/server/controller/spi/ClusterController.java
5e3f844 
>   ambari-server/src/main/java/org/apache/ambari/server/utils/JaxbMapKeyListAdapter.java
4589948 
>   ambari-server/src/main/java/org/apache/ambari/server/utils/JaxbMapKeyMapAdapter.java
8419d73 
>   ambari-server/src/main/java/org/apache/ambari/server/utils/JaxbMapKeyValAdapter.java
e3531cd 
> 
> Diff: https://reviews.apache.org/r/22941/diff/
> 
> 
> Testing
> -------
> 
> [INFO] Reactor Summary:
> [INFO] 
> [INFO] Ambari Main ....................................... SUCCESS [1.632s]
> [INFO] Apache Ambari Project POM ......................... SUCCESS [0.303s]
> [INFO] Ambari Web ........................................ SUCCESS [22.921s]
> [INFO] Ambari Views ...................................... SUCCESS [1.546s]
> [INFO] Ambari Server ..................................... SUCCESS [14:21.956s]
> [INFO] Ambari Agent ...................................... SUCCESS [6.150s]
> [INFO] Ambari Client ..................................... SUCCESS [0.035s]
> [INFO] Ambari Python Client .............................. SUCCESS [0.291s]
> [INFO] Ambari Groovy Client .............................. SUCCESS [8.195s]
> [INFO] Ambari Shell ...................................... SUCCESS [4.434s]
> 
> 
> Thanks,
> 
> Dmytro Sen
> 
>


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