[flink] branch master updated: [FLINK-19043][docs-zh] Translate the 'Logging' page of 'Debugging & Monitoring' into Chinese

[rm...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

rmetzger pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git


The following commit(s) were added to refs/heads/master by this push:
     new f38cb48  [FLINK-19043][docs-zh] Translate the 'Logging' page of 'Debugging & Monitoring' into Chinese
f38cb48 is described below

commit f38cb48146a90301a7d10f35e1dce985e4b23ad7
Author: Roc Marshal <fl...@126.com>
AuthorDate: Tue Aug 25 22:26:23 2020 +0800

    [FLINK-19043][docs-zh] Translate the 'Logging' page of 'Debugging & Monitoring' into Chinese
    
    This closes #13271
---
 docs/monitoring/logging.zh.md | 70 +++++++++++++++++++++++--------------------
 1 file changed, 37 insertions(+), 33 deletions(-)

diff --git a/docs/monitoring/logging.zh.md b/docs/monitoring/logging.zh.md
index a690e11..512d133 100644
--- a/docs/monitoring/logging.zh.md
+++ b/docs/monitoring/logging.zh.md
@@ -23,47 +23,51 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-The logging in Flink is implemented using the slf4j logging interface. As underlying logging framework, log4j2 is used. We also provide logback configuration files and pass them to the JVM's as properties. Users willing to use logback instead of log4j2 can just exclude log4j2 (or delete it from the lib/ folder).
+Flink 中的日志记录是使用 slf4j 日志接口实现的。使用 log4j2 作为底层日志框架。我们也支持了 logback 日志配置，只要将其配置文件作为参数传递给 JVM 即可。愿意使用 logback 而不是 log4j2 的用户只需排除 log4j2 的依赖（或从 lib/ 文件夹中删除它）即可。
 
 * This will be replaced by the TOC
 {:toc}
 
-## Configuring Log4j2
+<a name="configuring-log4j2"></a>
 
-Log4j2 is controlled using property files. In Flink's case, the file is usually called `log4j.properties`. We pass the filename and location of this file using the `-Dlog4j.configurationFile=` parameter to the JVM.
+## 配置 Log4j2
 
-Flink ships with the following default properties files:
+Log4j2 是使用配置文件指定的。在 Flink 的使用中，该文件通常命名为 `log4j.properties`。我们使用 `-Dlog4j.configurationFile=` 参数将该文件的文件名和位置传递给 JVM。
 
-- `log4j-cli.properties`: Used by the Flink command line client (e.g. `flink run`) (not code executed on the cluster)
-- `log4j-session.properties`: Used by the Flink command line client when starting a YARN or Kubernetes session (`yarn-session.sh`, `kubernetes-session.sh`)
-- `log4j.properties`: JobManager/Taskmanager logs (both standalone and YARN)
+Flink 附带以下默认日志配置文件：
 
-### Compatibility with Log4j1
+- `log4j-cli.properties`：由 Flink 命令行客户端使用（例如 `flink run`）（不包括在集群上执行的代码）
+- `log4j-session.properties`：Flink 命令行客户端在启动 YARN 或 Kubernetes session 时使用（`yarn-session.sh`，`kubernetes-session.sh`）
+- `log4j.properties`：作为 JobManager/TaskManager 日志配置使用（standalone 和 YARN 两种模式下皆使用）
 
-Flink ships with the [Log4j API bridge](https://logging.apache.org/log4j/log4j-2.2/log4j-1.2-api/index.html), allowing existing applications that work against Log4j1 classes to continue working.
+<a name="compatibility-with-log4j1"></a>
 
-If you have custom Log4j1 properties files or code that relies on Log4j1, please check out the official Log4j [compatibility](https://logging.apache.org/log4j/2.x/manual/compatibility.html) and [migration](https://logging.apache.org/log4j/2.x/manual/migration.html) guides.
+### 与 Log4j1 的兼容性
 
-## Configuring Log4j1
+Flink 附带了 [Log4j API bridge](https://logging.apache.org/log4j/log4j-2.2/log4j-1.2-api/index.html)，使得现有作业能够继续使用 log4j1 的接口。
 
-To use Flink with Log4j1 you must ensure that:
-- `org.apache.logging.log4j:log4j-core`, `org.apache.logging.log4j:log4j-slf4j-impl` and `org.apache.logging.log4j:log4j-1.2-api` are not on the classpath,
-- `log4j:log4j`, `org.slf4j:slf4j-log4j12`, `org.apache.logging.log4j:log4j-to-slf4j` and `org.apache.logging.log4j:log4j-api` are on the classpath.
+如果你有基于 Log4j 的自定义配置文件或代码，请查看官方 Log4j [兼容性](https://logging.apache.org/log4j/2.x/manual/compatibility.html)和[迁移](https://logging.apache.org/log4j/2.x/manual/migration.html)指南。
 
-In the IDE this means you have to replace such dependencies defined in your pom, and possibly add exclusions on dependencies that transitively depend on them.
+<a name="configuring-log4j1"></a>
 
-For Flink distributions this means you have to
-- remove the `log4j-core`, `log4j-slf4j-impl` and `log4j-1.2-api` jars from the `lib` directory,
-- add the `log4j`, `slf4j-log4j12` and `log4j-to-slf4j` jars to the `lib` directory,
-- replace all log4j properties files in the `conf` directory with Log4j1-compliant versions.
+## 配置 Log4j1
 
-## Configuring logback
+要将 Flink 与 Log4j1 一起使用，必须确保：
+- Classpath 中不存在 `org.apache.logging.log4j:log4j-core`，`org.apache.logging.log4j:log4j-slf4j-impl` 和 `org.apache.logging.log4j:log4j-1.2-api`，
+- 且 Classpath 中存在 `log4j:log4j`，`org.slf4j:slf4j-log4j12`，`org.apache.logging.log4j:log4j-to-slf4j` 和 `org.apache.logging.log4j:log4j-api`。
 
-For users and developers alike it is important to control the logging framework.
-The configuration of the logging framework is exclusively done by configuration files.
-The configuration file either has to be specified by setting the environment property `-Dlogback.configurationFile=<file>` or by putting `logback.xml` in the classpath.
-The `conf` directory contains a `logback.xml` file which can be modified and is used if Flink is started outside of an IDE and with the provided starting scripts.
-The provided `logback.xml` has the following form:
+在 IDE 中使用 log4j1，你必须在 pom 文件中使用上述 `Classpath 中存在的 jars` 依赖项替换 `Classpath 中不存在的 jars` 依赖项，并尽可能在传递依赖于 `Classpath 中不存在的 jars` 的依赖项上添加排除 `Classpath 中不存在的 jars` 配置。
+
+对于 Flink 发行版，这意味着你必须
+- 从 `lib` 目录中移除 `log4j-core`，`log4j-slf4j-impl` 和 `log4j-1.2-api` jars，
+- 向 `lib` 目录中添加 `log4j`，`slf4j-log4j12` 和 `log4j-to-slf4j` jars，
+- 用兼容的 Log4j1 版本替换 `conf` 目录中的所有 log4j 配置文件。
+
+<a name="configuring-logback"></a>
+
+## 配置 logback
+
+对于用户和开发人员来说，控制日志框架非常重要。日志框架的配置完全由配置文件完成。必须通过设置环境参数 `-Dlogback.configurationFile=<file>` 或将 `logback.xml` 放在 classpath 中来指定配置文件。`conf` 目录包含一个 `logback.xml` 文件，该文件可以修改，如果使用附带的启动脚本在 IDE 之外启动 Flink 则会使用该日志配置文件。提供的 `logback.xml` 具有以下格式：
 
 {% highlight xml %}
 <configuration>
@@ -81,17 +85,19 @@ The provided `logback.xml` has the following form:
 </configuration>
 {% endhighlight %}
 
-In order to control the logging level of `org.apache.flink.runtime.jobgraph.JobGraph`, for example, one would have to add the following line to the configuration file.
+例如，为了控制 `org.apache.flink.runtime.jobgraph.JobGraph` 的日志记录级别，必须将以下行添加到配置文件中。
 
 {% highlight xml %}
 <logger name="org.apache.flink.runtime.jobgraph.JobGraph" level="DEBUG"/>
 {% endhighlight %}
 
-For further information on configuring logback see [LOGback's manual](http://logback.qos.ch/manual/configuration.html).
+有关配置日志的更多信息，请参见 [LOGback 手册](http://logback.qos.ch/manual/configuration.html)。
+
+<a name="best-practices-for-developers"></a>
 
-## Best practices for developers
+## 开发人员的最佳实践
 
-The loggers using slf4j are created by calling
+Slf4j 的 loggers 通过调用 `LoggerFactory` 的 `getLogger()` 方法创建
 
 {% highlight java %}
 import org.slf4j.LoggerFactory
@@ -100,15 +106,13 @@ import org.slf4j.Logger
 Logger LOG = LoggerFactory.getLogger(Foobar.class)
 {% endhighlight %}
 
-In order to benefit most from slf4j, it is recommended to use its placeholder mechanism.
-Using placeholders allows to avoid unnecessary string constructions in case that the logging level is set so high that the message would not be logged.
-The syntax of placeholders is the following:
+为了最大限度地利用 slf4j，建议使用其占位符机制。使用占位符可以避免不必要的字符串构造，以防日志级别设置得太高而不会记录消息。占位符的语法如下：
 
 {% highlight java %}
 LOG.info("This message contains {} placeholders. {}", 2, "Yippie");
 {% endhighlight %}
 
-Placeholders can also be used in conjunction with exceptions which shall be logged.
+占位符也可以和要记录的异常一起使用。
 
 {% highlight java %}
 catch(Exception exception){