slfan1989 opened a new pull request, #4908:
URL: https://github.com/apache/hadoop/pull/4908
JIRA: YARN-11308. Router Page display the db username and password in mask
mode.
When using YRAN-Federation's SQLFederationStateStore, we need to configure
yarn.federation.state-store.sql.username,
yarn.federation.state-store.sql.password in the configuration file, When
viewing Conf on the Router page, the user name and password are displayed in
plaintext, which will bring security risks. We should display it in the form of
a mask.
before fixing
```
<property>
<name>yarn.federation.state-store.sql.username</name>
<value>federation</value>
<final>false</final>
<source>yarn-site.xml</source>
</property>
<property>
<name>yarn.federation.state-store.sql.password</name>
<value>federation123</value>
<final>false</final>
<source>yarn-site.xml</source>
</property>
```
after fixing
```
<property>
<name>yarn.federation.state-store.sql.username</name>
<value>******</value>
<final>false</final>
<source>yarn-site.xml</source>
</property>
<property>
<name>yarn.federation.state-store.sql.password</name>
<value>******</value>
<final>false</final>
<source>yarn-site.xml</source>
</property>
```
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