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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-21898) Property provider in-memory maps are refreshed too slowly after config updates
Date Thu, 07 Sep 2017 20:10:01 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-21898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157564#comment-16157564
] 

Hudson commented on AMBARI-21898:
---------------------------------

FAILURE: Integrated in Jenkins build Ambari-trunk-Commit #8019 (See [https://builds.apache.org/job/Ambari-trunk-Commit/8019/])
AMBARI-21898. Property provider in-memory maps are refreshed too slowly (swagle: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=5e242c9ce099e7a72934974052ad56dc25cdb7ae])
* (edit) ambari-server/src/main/java/org/apache/ambari/server/state/cluster/ClusterImpl.java
* (edit) ambari-server/src/main/java/org/apache/ambari/server/controller/internal/AbstractProviderModule.java
* (edit) ambari-server/src/main/java/org/apache/ambari/server/state/Cluster.java


> Property provider in-memory maps are refreshed too slowly after config updates
> ------------------------------------------------------------------------------
>
>                 Key: AMBARI-21898
>                 URL: https://issues.apache.org/jira/browse/AMBARI-21898
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.0.0
>            Reporter: Siddharth Wagle
>            Assignee: Siddharth Wagle
>            Priority: Critical
>             Fix For: 2.6.0
>
>         Attachments: AMBARI-21898.patch, AMBARI-21898.patch
>
>
> Building the hostComponentMap map for ProviderModule seems does unnecessary computation
going through the ResourceProvider layer. On every configuration update, we call the reset
on these maps which takes a long time to refresh. Instead, relying on org.apache.ambari.server.state.cluster.ClusterImpl#serviceComponentHosts
will lead to faster computation without overhead like stale config calculations for every
SCH.



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