[GitHub] caosuwenwu closed pull request #7472: hh

[GitBox <gi...@apache.org>]

caosuwenwu closed pull request #7472: hh
URL: https://github.com/apache/flink/pull/7472
 
 
   

This is a PR merged from a forked repository.
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diff --git a/README-code.md b/README-code.md
new file mode 100644
index 00000000000..665b1313991
--- /dev/null
+++ b/README-code.md
@@ -0,0 +1 @@
+## 源码研读和注释分析
diff --git a/flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java b/flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java
index c7c664d3f86..c6e6d9dd683 100644
--- a/flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java
+++ b/flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java
@@ -1102,16 +1102,21 @@ public int parseParameters(String[] args) {
 	/**
 	 * Submits the job based on the arguments.
 	 */
+	//todo client启动位置（通过bin/flink脚本可以获取此位置）
 	public static void main(final String[] args) {
+		//todo 写入java环境有关参数配置和命令参数（run xxxxxxxxx）到日志里 ，日志文件log文件夹（flink-"user"-client-"ip".log）
 		EnvironmentInformation.logEnvironmentInfo(LOG, "Command Line Client", args);
 
 		// 1. find the configuration directory
+		//todo 获取bin/conf的路径
 		final String configurationDirectory = getConfigurationDirectoryFromEnv();
 
 		// 2. load the global configuration
+		//todo 获取flink-conf.yaml配置文件的参数,并且日志文件打印出来
 		final Configuration configuration = GlobalConfiguration.loadConfiguration(configurationDirectory);
 
 		// 3. load the custom command lines
+		//todo 通过java反射出org.apache.flink.yarn.cli.FlinkYarnSessionCli类
 		final List<CustomCommandLine<?>> customCommandLines = loadCustomCommandLines(
 			configuration,
 			configurationDirectory);
diff --git a/flink-core/src/main/java/org/apache/flink/core/memory/MemorySegment.java b/flink-core/src/main/java/org/apache/flink/core/memory/MemorySegment.java
index d1695455130..aed0e25be0a 100644
--- a/flink-core/src/main/java/org/apache/flink/core/memory/MemorySegment.java
+++ b/flink-core/src/main/java/org/apache/flink/core/memory/MemorySegment.java
@@ -92,6 +92,10 @@
  * actual implementation. This is easy for the JIT to recognize through class hierarchy analysis,
  * or by identifying that the invocations are monomorphic (all go to the same concrete
  * method implementation). Under these conditions, the JIT can perfectly inline methods.
+ *
+ *
+ *内存块源码地方，看import的类都是nio和io相关，其实就是二进制数据的输入输出，通过前面对象序列化
+ *写到内存块中，不放在堆内存中，从而实现自己内存管理，内存这里flink序列化对与不同类型的提供不同序列化工具
  */
 @Internal
 public abstract class MemorySegment {
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/entrypoint/StandaloneSessionClusterEntrypoint.java b/flink-runtime/src/main/java/org/apache/flink/runtime/entrypoint/StandaloneSessionClusterEntrypoint.java
index 127fc8b9831..e1676819002 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/entrypoint/StandaloneSessionClusterEntrypoint.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/entrypoint/StandaloneSessionClusterEntrypoint.java
@@ -41,6 +41,7 @@ public StandaloneSessionClusterEntrypoint(Configuration configuration) {
 		return new SessionDispatcherResourceManagerComponentFactory(StandaloneResourceManagerFactory.INSTANCE);
 	}
 
+	//todo jobmanager启动位置
 	public static void main(String[] args) {
 		// startup checks and logging
 		EnvironmentInformation.logEnvironmentInfo(LOG, StandaloneSessionClusterEntrypoint.class.getSimpleName(), args);
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerRunner.java b/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerRunner.java
index e06be5329cf..789d8f26e34 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerRunner.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerRunner.java
@@ -268,7 +268,7 @@ protected void terminateJVM() {
 	// --------------------------------------------------------------------------------------------
 	//  Static entry point
 	// --------------------------------------------------------------------------------------------
-
+	//todo taskmanager启动位置
 	public static void main(String[] args) throws Exception {
 		// startup checks and logging
 		EnvironmentInformation.logEnvironmentInfo(LOG, "TaskManager", args);


 

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