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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/72749/
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Review request for ranger, Madhan Neethiraj, Mehul Parikh, Pradeep Agrawal, and 
Ramesh Mani.


Bugs: RANGER-2944
    https://issues.apache.org/jira/browse/RANGER-2944


Repository: ranger


Description
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In the configuration of Ranger Presto plugin service, password is not a 
required content. Only when SSL is enabled in Presto, we need to fill in the 
password. When Presto does not enable SSL, if you fill in the password when 
configuring the service, the connection will fail and an exception will be 
thrown.
```java
java.sql.SQLException: Authentication using username/password requires SSL to 
be enabled
```
However, currently in the code, we always put 
`prop.getProperty(HadoopConfigHolder.RANGER_LOGIN_PASSWORD)` to 
prestoProperties, if the password is not set, 
`prop.getProperty(HadoopConfigHolder.RANGER_LOGIN_PASSWORD)` will be null. If 
we put a null value to Properties, this will throw NPE. We need to check 
whether we have set the password.


Diffs
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plugin-presto/src/main/java/org/apache/ranger/services/presto/client/PrestoClient.java
 37c2346e0 


Diff: https://reviews.apache.org/r/72749/diff/1/


Testing
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The lookupResource returns to normal, and the auto-completion function returns 
to normal when configured in the presto policy.


Thanks,

Jiayi Liu

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