big-data/hadoop_book
Template
1
1
Fork 0
Code Issues 8 Pull Requests Projects 1 Activity

namenode启动源码分析

Browse Source
This commit is contained in:
LingZhaoHui 2023-11-05 11:59:29 +08:00
parent 22117d178d
commit 027d9e5ef0
Signed by: zeekling
GPG Key ID: D96E4E75267CA2CC
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hdfs/nameNode启动过程.md
View File

@ -153,6 +153,7 @@ private void startCommonServices(Configuration conf) throws IOException {
// 启动所有插件
for (ServicePlugin p: plugins) {
try {
// 调用插件的start接口，需要插件自己实现，需要实现接口ServicePlugin
p.start(this);
} catch (Throwable t) {
LOG.warn("ServicePlugin " + p + " could not be started", t);
@ -202,8 +203,7 @@ void startCommonServices(Configuration conf, HAContext haContext) throws IOExcep
// 注册快照管理器
snapshotManager.registerMXBean();
InetSocketAddress serviceAddress = NameNode.getServiceAddress(conf, true);
this.nameNodeHostName = (serviceAddress != null) ?
serviceAddress.getHostName() : "";
this.nameNodeHostName = (serviceAddress != null) ? serviceAddress.getHostName() : "";
}
```
@ -219,6 +219,7 @@ void startCommonServices(Configuration conf, HAContext haContext) throws IOExcep
```java
public void activate(Configuration conf, long blockTotal) {
pendingReconstruction.start();
// 初始化datanodeManager
datanodeManager.activate(conf);
this.redundancyThread.setName("RedundancyMonitor");
this.redundancyThread.start();
@ -231,5 +232,3 @@ public void activate(Configuration conf, long blockTotal) {
```