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Date: Mon, 16 Jan 2017 18:12:26 +0000 (UTC)
From: "Antonenko Alexander (JIRA)" <jira@apache.org>
To: issues@ambari.apache.org
Message-ID: <JIRA.13034845.1484348764000.18186.1484590346468@Atlassian.JIRA>
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Subject: [jira] [Updated] (AMBARI-19540) Possibly too frequent calls to
 stack advisor as user changes sliders
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archived-at: Mon, 16 Jan 2017 18:12:40 -0000


     [ https://issues.apache.org/jira/browse/AMBARI-19540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antonenko Alexander updated AMBARI-19540:
-----------------------------------------
    Attachment: AMBARI-19540.patch

> Possibly too frequent calls to stack advisor as user changes sliders
> --------------------------------------------------------------------
>
>                 Key: AMBARI-19540
>                 URL: https://issues.apache.org/jira/browse/AMBARI-19540
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.5.0
>            Reporter: Vivek Ratnavel Subramanian
>            Assignee: Vivek Ratnavel Subramanian
>             Fix For: 2.5.0
>
>         Attachments: AMBARI-19540.patch, AMBARI-19540.v0.patch, AMBARI-19540.v1.branch-2.5.patch
>
>
> As you can see 3 calls are made while changing from 1024 to 2048 and similarly 3 calls when coming back to 1024. 
> Beyond performance concern, multiple calls have a functional issue. The call includes previous value of the changed property - see the values. I would have expected the old value to be the value that was the original/saved value. However, it is wherever UI makes the stack advisor calls.
> [root@smq1-1 stack-recommendations]# find . -name services.json | xargs grep -A 3 changed
> ./55/services.json:  "changed-configurations" : [ {
> ./55/services.json-    "type" : "yarn-site",
> ./55/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./55/services.json-    "old_value" : "1024"
> ./56/services.json:  "changed-configurations" : [ {
> ./56/services.json-    "type" : "yarn-site",
> ./56/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./56/services.json-    "old_value" : "1280"
> ./57/services.json:  "changed-configurations" : [ {
> ./57/services.json-    "type" : "yarn-site",
> ./57/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./57/services.json-    "old_value" : "1792"
> ./58/services.json:  "changed-configurations" : [ {
> ./58/services.json-    "type" : "yarn-site",
> ./58/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./58/services.json-    "old_value" : "2048"
> ./59/services.json:  "changed-configurations" : [ {
> ./59/services.json-    "type" : "yarn-site",
> ./59/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./59/services.json-    "old_value" : "1792"
> ./60/services.json:  "changed-configurations" : [ {
> ./60/services.json-    "type" : "yarn-site",
> ./60/services.json-    "name" : "yarn.scheduler.minimum-allocation-mb",
> ./60/services.json-    "old_value" : "1280"


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