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Yufei Gu commented on YARN-6264: -------------------------------- Hi [~DjvuLee], changed the description to answer your question. > AM not launched when a single vcore is available on the cluster > --------------------------------------------------------------- > > Key: YARN-6264 > URL: https://issues.apache.org/jira/browse/YARN-6264 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler > Reporter: Yufei Gu > Assignee: Yufei Gu > Attachments: YARN-6264.001.patch, YARN-6264.002.patch, > YARN-6264.003.patch, YARN-6264.004.patch, YARN-6264.005.patch > > > In method {{canRunAppAM()}}, we will get a zero vcore if there is only one > vcores, and the {{maxAMShare}} is between 0 and 1 because > {{Resources#multiply}} round down double to a integer by default. This > potentially happens frequently when preemption happens and assign a new > container to AM. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org