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ASF GitHub Bot commented on FLINK-8360: --------------------------------------- Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/5239#discussion_r165307761 --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/state/OperatorStateBackendTest.java --- @@ -355,10 +355,11 @@ public void testSnapshotEmpty() throws Exception { CheckpointStreamFactory streamFactory = abstractStateBackend.createStreamFactory(new JobID(), "testOperator"); - RunnableFuture<OperatorStateHandle> snapshot = + RunnableFuture<SnapshotResult<OperatorStateHandle>> snapshot = operatorStateBackend.snapshot(0L, 0L, streamFactory, CheckpointOptions.forCheckpoint()); - OperatorStateHandle stateHandle = FutureUtil.runIfNotDoneAndGet(snapshot); + SnapshotResult<OperatorStateHandle> snapshotResult = FutureUtil.runIfNotDoneAndGet(snapshot); + OperatorStateHandle stateHandle = snapshotResult != null ? snapshotResult.getJobManagerOwnedSnapshot() : null; --- End diff -- This seems a bit circumstantial. Can't we make it that `snapshotResult` is always not null? > Implement task-local state recovery > ----------------------------------- > > Key: FLINK-8360 > URL: https://issues.apache.org/jira/browse/FLINK-8360 > Project: Flink > Issue Type: New Feature > Components: State Backends, Checkpointing > Reporter: Stefan Richter > Assignee: Stefan Richter > Priority: Major > Fix For: 1.5.0 > > > This issue tracks the development of recovery from task-local state. The main > idea is to have a secondary, local copy of the checkpointed state, while > there is still a primary copy in DFS that we report to the checkpoint > coordinator. > Recovery can attempt to restore from the secondary local copy, if available, > to save network bandwidth. This requires that the assignment from tasks to > slots is as sticky is possible. > For starters, we will implement this feature for all managed keyed states and > can easily enhance it to all other state types (e.g. operator state) later. -- This message was sent by Atlassian JIRA (v7.6.3#76005)