RocMarshal commented on a change in pull request #12727:
URL: https://github.com/apache/flink/pull/12727#discussion_r444017808
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File path: docs/learn-flink/fault_tolerance.zh.md
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@@ -29,180 +29,156 @@ under the License.
## State Backends
-The keyed state managed by Flink is a sort of sharded, key/value store, and
the working copy of each
-item of keyed state is kept somewhere local to the taskmanager responsible for
that key. Operator
-state is also local to the machine(s) that need(s) it. Flink periodically
takes persistent snapshots
-of all the state and copies these snapshots somewhere more durable, such as a
distributed file
-system.
+由 Flink 管理的 keyed state 是一种分片的键/值存储，并且 keyed state 的每一项的工作副本都保存在负责该键的
taskmanager 本地的某个地方。
Review comment:
@klion26
`并且 keyed state 的每一项的工作副本`-->`每个 keyed state 的工作副本` ？
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