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https://issues.apache.org/jira/browse/YARN-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907612#comment-14907612
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Greg Senia commented on YARN-3942:
----------------------------------

Also [~gtCarrera] I was not able to get your patch to compile on my custom 
Hadoop 2.6.x code base. I had to change it from this +import 
org.apache.htrace.fasterxml.jackson.databind.ObjectMapper; as this was not 
found at compile time... changed it to +import 
com.fasterxml.jackson.databind.ObjectMapper; and added the following below to 
the pom.. My testing is underway so far so good


      <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.2.3</version>
      </dependency>


> Timeline store to read events from HDFS
> ---------------------------------------
>
>                 Key: YARN-3942
>                 URL: https://issues.apache.org/jira/browse/YARN-3942
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: timelineserver
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: YARN-3942-leveldb.001.patch, YARN-3942.001.patch
>
>
> This adds a new timeline store plugin that is intended as a stop-gap measure 
> to mitigate some of the issues we've seen with ATS v1 while waiting for ATS 
> v2.  The intent of this plugin is to provide a workable solution for running 
> the Tez UI against the timeline server on a large-scale clusters running many 
> thousands of jobs per day.



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