You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@ambari.apache.org by "Srimanth Gunturi (JIRA)" <ji...@apache.org> on 2016/06/22 16:58:58 UTC
[jira] [Commented] (AMBARI-17376) Recommendations request execution
takes too long time
[ https://issues.apache.org/jira/browse/AMBARI-17376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344741#comment-15344741 ]
Srimanth Gunturi commented on AMBARI-17376:
-------------------------------------------
Took some raw data measurements for *five* /recommendations call on 900 node cluster for recommending configurations:
{noformat}
Client Call Time 2790 2828 2595 2550 2601
network,serialization,.. 803 1003 755 659 760
getHostsInformation 362 282 315 310 286
getServicesInformation 153 155 138 152 162
loadJson(hosts): 1012 922 938 972 943
loadJson(services) 216 207 208 212 204
instantiateStackAdvisor() 22 25 21 21 21
recommendConfigurations(): 171 187 171 174 174
dumpJson(): 5 4 4 4 4
{noformat}
From the information above, approx 36% of entire client time is being spent on loading just the _hosts.json_ by Python. We definitely need to speed up loading JSON files in Python to speed up the most. The actual recommendations logic takes only ~173ms.
!RecommendationsBreakdown.png!
> Recommendations request execution takes too long time
> -----------------------------------------------------
>
> Key: AMBARI-17376
> URL: https://issues.apache.org/jira/browse/AMBARI-17376
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.4.0
> Reporter: Srimanth Gunturi
> Assignee: Srimanth Gunturi
> Priority: Critical
> Fix For: 2.4.0
>
>
> /api/v1/stacks/HDP/versions/2.5/recommendations GET request is executed for a long time.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)