GJL 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_r223301904
##########
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" +
- " of virtual cores is set to
the number of task slots by default unless configured" +
- " in the Flink config with
'%s.'",
- configuredVcores, numYarnVcores,
YarnConfigOptions.VCORES.key()));
+ String.format("The number of requested virtual
cores per node %d" +
+ " exceeds the maximum number
virtual cores %d available in the Yarn Cluster." +
Review comment:
I think it should be: [...] _maximum number **of** virtual cores_ [...]
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