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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_r165331598 --- Diff: flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBStateBackend.java --- @@ -686,4 +714,53 @@ static void resetRocksDBLoadedFlag() throws Exception { initField.setAccessible(true); initField.setBoolean(null, false); } + + /** + * This enum represents the different modes for local recovery. + */ + public enum LocalRecoveryMode { + DISABLED, ENABLE_FILE_BASED + } + + /** + * This class encapsulates the configuration for local recovery of this backend. + */ + public static final class LocalRecoveryConfig implements Serializable { + + private static final long serialVersionUID = 1L; + private static final LocalRecoveryConfig DISABLED_SINGLETON = + new LocalRecoveryConfig(LocalRecoveryMode.DISABLED, null); + + private final LocalRecoveryMode localRecoveryMode; + private final File localStateDirectory; + + LocalRecoveryConfig(LocalRecoveryMode localRecoveryMode, File localStateDirectory) { --- End diff -- @Nullable annotation missing > 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)