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https://issues.apache.org/jira/browse/HADOOP-17069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prashant Sharma resolved HADOOP-17069.
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    Resolution: Invalid

Resolving as invalid, as I realised that keystore has to be created by hadoop 
tools only and not with keytool. Documentation does not say anything about 
this, maybe a note can be added.

> The default password(none) in JavaKeyStoreProvider, is no-longer useful. 
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-17069
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17069
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: kms
>    Affects Versions: 3.2.1, 3.4.0
>            Reporter: Prashant Sharma
>            Priority: Major
>
> Since, the java keytool does not allow us to create a keystore with password 
> length less than 6 characters(i.e. none), we should consider updating the 
> password to a 6 char length (e.g. nopass).
> {code}
> $ keytool -genkeypair -storetype jceks -keyalg RSA -alias kms -keystore 
> `pwd`/keystore4 -storepass none
> keytool error: java.lang.Exception: Keystore password must be at least 6 
> characters
> $ java -version
> openjdk version "1.8.0_252"
> OpenJDK Runtime Environment (build 1.8.0_252-8u252-b09-1ubuntu1-b09)
> OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode)
> {code}



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