question Re: yarn web ui is too slow in Archives of Support Questions (Read Only)

yarn web ui is too slow

arunpoy — Thu, 22 Dec 2016 13:05:26 GMT

Yarn web ui ( Resource manager ui) is slow and it takes time to load the page. IS there any setting which needs to be tuned to make it faster?

Re: yarn web ui is too slow

rajkumar_singh — Thu, 22 Dec 2016 13:28:42 GMT

@ARUN you can decrease the no of application display in yarn web ui controlled by yarn.resourcemanager.max-completed-applications parameters,ResourceManager will store by default 10000 completed applications in memory which could slow down UI

Re: yarn web ui is too slow

arunpoy — Thu, 22 Dec 2016 13:39:15 GMT

Thanks @Rajkumar Singh, if i reduce this parameter and if i want to retrieve history will it be possible. say for example if i have set this value to 1000, will it be possible for me to retrieve jobs more than 1000 if needed?

Re: yarn web ui is too slow

rajkumar_singh — Thu, 22 Dec 2016 13:42:06 GMT

@ARUN yes you can still retrieve application stats from application timeline server(ATS)

Re: yarn web ui is too slow

arunpoy — Thu, 22 Dec 2016 14:16:14 GMT

one quick question @Rajkumar Singh, can this property be set in the advnaced yarn-site section in ambari

old
 <property>
      <name>yarn.resourcemanager.state-store.max-completed-applications</name>
      <value>${yarn.resourcemanager.max-completed-applications}</value>
    </property>
new
 <property>
      <name>yarn.resourcemanager.state-store.max-completed-applications</name>
      <value>1000</value>
    </property>