yarn 報錯 requested virtual cores < 0, or requested virtual cores > max configured, requestedVirtualCores=6, maxVirtualCores=4 原因

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INFO  ApplicationMaster:54 - Final app status: FAILED, exitCode: 13, (reason: Uncaught exception: org.apache.hadoop.yarn.exceptions.InvalidResourceRequestException: Invalid resource request, requested virtual cores < 0, or requested virtual cores > max configured, requestedVirtualCores=6, maxVirtualCores=4

原因是 工作要求 6vcores 但是最大隻有4vcores ，申請不到可用的6vcores 所以報錯了。

我們是hadoop-2.6.0 升級hadoop-2.8.4 之後報了此問題
yarn-site.xml

<!-- 2.8.4 最大default 4 --><property>    <name>yarn.scheduler.maximum-allocation-vcores</name>    <value>4</value></property><!-- 2.6.0 最大default 32 --><property>    <name>yarn.scheduler.maximum-allocation-vcores</name>    <value>32</value></property>

把2.8.4 yarn-site.xml 修改到32，重啟yarn就行了

yarn 報錯 requested virtual cores < 0, or requested virtual cores > max configured, requestedVirtualCores=6, maxVirtualCores=4 原因