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https://issues.apache.org/jira/browse/FLINK-8360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16365605#comment-16365605
]
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_r168488712
--- Diff:
flink-runtime/src/main/scala/org/apache/flink/runtime/taskmanager/TaskManager.scala
---
@@ -120,15 +120,16 @@ import scala.language.postfixOps
* requires a clean JVM.
*/
class TaskManager(
- protected val config: TaskManagerConfiguration,
- protected val resourceID: ResourceID,
- protected val location: TaskManagerLocation,
- protected val memoryManager: MemoryManager,
- protected val ioManager: IOManager,
- protected val network: NetworkEnvironment,
- protected val numberOfSlots: Int,
- protected val highAvailabilityServices: HighAvailabilityServices,
- protected val taskManagerMetricGroup: TaskManagerMetricGroup)
+ protected val config: TaskManagerConfiguration,
+ protected val resourceID: ResourceID,
+ protected val location: TaskManagerLocation,
+ protected val memoryManager: MemoryManager,
+ protected val ioManager: IOManager,
+ protected val network: NetworkEnvironment,
+ protected val taskManagerLocalStateStoresManager:
TaskExecutorLocalStateStoresManager,
+ protected val numberOfSlots: Int,
+ protected val highAvailabilityServices:
HighAvailabilityServices,
+ protected val taskManagerMetricGroup:
TaskManagerMetricGroup)
--- End diff --
Please revert indentation here.
> 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.
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