tillrohrmann commented on a change in pull request #6775: [FLINK-5542] use YarnCluster vcores setting to do MaxVCore validation URL: https://github.com/apache/flink/pull/6775#discussion_r223209376
########## File path: flink-yarn/src/main/java/org/apache/flink/yarn/AbstractYarnClusterDescriptor.java ########## @@ -282,18 +282,29 @@ private void isReadyForDeployment(ClusterSpecification clusterSpecification) thr } // Check if we don't exceed YARN's maximum virtual cores. - // The number of cores can be configured in the config. - // If not configured, it is set to the number of task slots - int numYarnVcores = yarnConfiguration.getInt(YarnConfiguration.NM_VCORES, YarnConfiguration.DEFAULT_NM_VCORES); + // Fetch numYarnMaxVcores from all the RUNNING nodes via yarnClient + int numYarnMaxVcores = Integer.MIN_VALUE; + try { + List<NodeReport> nodes = yarnClient.getNodeReports(NodeState.RUNNING); + for (NodeReport rep : nodes) { + final Resource res = rep.getCapability(); + if (res.getVirtualCores() > numYarnMaxVcores) { + numYarnMaxVcores = res.getVirtualCores(); + } + } + } catch (Exception e) { + throw new YarnDeploymentException("Couldn't get cluster description, please check on the YarnConfiguration", e); + } + int configuredVcores = flinkConfiguration.getInteger(YarnConfigOptions.VCORES, clusterSpecification.getSlotsPerTaskManager()); // don't configure more than the maximum configured number of vcores - if (configuredVcores > numYarnVcores) { + if (configuredVcores > numYarnMaxVcores) { throw new IllegalConfigurationException( String.format("The number of virtual cores per node were configured with %d" + - " but Yarn only has %d virtual cores available. Please note that the number" + + " already exceeds the max vcores %d set on Yarn Cluster. Please note that the number" + Review comment: Maybe reword: "The number of requested virtual cores per node %d exceeds the maximum number virtual cores %d available in the Yarn cluster." ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services