klion26 commented on a change in pull request #8750: [FLINK-11606] Translate
the "Distributed Runtime Environment" page in to Chinese
URL: https://github.com/apache/flink/pull/8750#discussion_r294121434
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File path: docs/concepts/runtime.zh.md
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@@ -26,102 +26,74 @@ under the License.
* This will be replaced by the TOC
{:toc}
-## Tasks and Operator Chains
+## 任务和算子链
-For distributed execution, Flink *chains* operator subtasks together into
*tasks*. Each task is executed by one thread.
-Chaining operators together into tasks is a useful optimization: it reduces
the overhead of thread-to-thread
-handover and buffering, and increases overall throughput while decreasing
latency.
-The chaining behavior can be configured; see the [chaining
docs](../dev/stream/operators/#task-chaining-and-resource-groups) for details.
+分布式计算中，Flink 将算子（operator）的 subtask *链接（chain）*成 task。每个 task 由一个线程执行。把算子链接成
tasks 是一个很好的优化：它减少了线程间切换和缓冲的开销，并在降低延迟的同时提高了整体吞吐量。链接操作的配置详情可参考：[chaining
docs](../dev/stream/operators/#task-chaining-and-resource-groups)
-The sample dataflow in the figure below is executed with five subtasks, and
hence with five parallel threads.
+下图的 dataflow 由五个 subtasks 执行，因此具有五个并行线程。
<img src="{{ site.baseurl }}/fig/tasks_chains.svg" alt="Operator chaining into
Tasks" class="offset" width="80%" />
{% top %}
-## Job Managers, Task Managers, Clients
+## Job Managers、Task Managers、客户端（Clients）
-The Flink runtime consists of two types of processes:
+Flink 运行时包含两类进程：
- - The **JobManagers** (also called *masters*) coordinate the distributed
execution. They schedule tasks, coordinate
- checkpoints, coordinate recovery on failures, etc.
+ - **JobManagers** （也称为 *masters*）协调分布式计算。它们负责调度任务、协调 checkpoints、协调故障恢复等。
- There is always at least one Job Manager. A high-availability setup will
have multiple JobManagers, one of
- which one is always the *leader*, and the others are *standby*.
+ 至少需要一个 JobManager。高可用部署下会有多个 JobManagers，其中一个作为 *leader*，其余处于 *standby* 状态。
Review comment:
```suggestion
每个 Job 至少会有一个 JobManager。高可用部署下会有多个 JobManagers，其中一个作为 *leader*，其余处于
*standby* 状态。
```
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