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Posted to issues@flink.apache.org by "Yun Gao (Jira)" <ji...@apache.org> on 2022/04/13 06:28:04 UTC
[jira] [Updated] (FLINK-26351) After scaling a flink task running on k8s, the flink web ui graph always shows the parallelism of the first deployment.
[ https://issues.apache.org/jira/browse/FLINK-26351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yun Gao updated FLINK-26351:
----------------------------
Fix Version/s: 1.16.0
> After scaling a flink task running on k8s, the flink web ui graph always shows the parallelism of the first deployment.
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-26351
> URL: https://issues.apache.org/jira/browse/FLINK-26351
> Project: Flink
> Issue Type: Bug
> Components: API / Core
> Affects Versions: 1.15.0
> Reporter: qiunan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.15.0, 1.16.0
>
>
> In the code，flink web ui graph data from under method.
> AdaptiveScheduler.requestJob()
> {code:java}
> @Override
> public ExecutionGraphInfo requestJob() {
> return new ExecutionGraphInfo(state.getJob(), exceptionHistory.toArrayList());
> } {code}
> This executionGraphInfo is task restart build and restore to state.
> You can see the code, the parallelism recalculate and copy jobGraph to reset.
> AdaptiveScheduler.createExecutionGraphWithAvailableResourcesAsync().
> {code:java}
> vertexParallelism = determineParallelism(slotAllocator);
> JobGraph adjustedJobGraph = jobInformation.copyJobGraph();
> for (JobVertex vertex : adjustedJobGraph.getVertices()) {
> JobVertexID id = vertex.getID();
> // use the determined "available parallelism" to use
> // the resources we have access to
> vertex.setParallelism(vertexParallelism.getParallelism(id));
> }{code}
> But in the restoreState copy jobGraph again, so the jobGraph parallelism always deployed for the first time.
> AdaptiveScheduler.createExecutionGraphAndRestoreState(VertexParallelismStore adjustedParallelismStore)
> {code:java}
> private ExecutionGraph createExecutionGraphAndRestoreState(
> VertexParallelismStore adjustedParallelismStore) throws Exception {
> return executionGraphFactory.createAndRestoreExecutionGraph(
> jobInformation.copyJobGraph(),
> completedCheckpointStore,
> checkpointsCleaner,
> checkpointIdCounter,
> TaskDeploymentDescriptorFactory.PartitionLocationConstraint.MUST_BE_KNOWN,
> initializationTimestamp,
> vertexAttemptNumberStore,
> adjustedParallelismStore,
> deploymentTimeMetrics,
> LOG);
> } {code}
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