why yarn service is launching ats-hbase app in HDP 3.0 ?

[#1]

Hi Team,

we have been observed yarn-service is launching ats-hbase application by default. what is the use of this application.?

[#2 · Accepted solution]

@subhash parise,

In HDP 3.0, yarn has a new implementation of Timeline server called Timeline server v2 (previouly timeline 1.5 was used).

TS v2 uses HBase for storing the information of all the applications. TS v2 will be started either as a system service (which is a yarn application) or in embedded mode ( runs a standalone hbase server) based on the resources. If the cluster has enough resources it will be started as a system service or yarn application which is true in your case.

You can check the config ( is_hbase_system_service ) to check if is running as a yarn application or in standalone mode.

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You can read more about timeline server 2.0 here

https://docs.hortonworks.com/HDPDocuments/HDP3/HDP-3.0.0/data-operating-system/content/yarn_timeline...

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Please "Accept" if this helps 🙂

[#3]

@Aditya Sirna @subhash parise @Jay Kumar SenSharma

can we kill this application? it is taking too much time to finish

[#4]

Its a service that's running, not a job. So avoid killing it.