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https://issues.apache.org/jira/browse/HADOOP-18978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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István Fajth deleted HADOOP-18978:
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> Create curator client the same way possibly with the same code for all
> services
> -------------------------------------------------------------------------------
>
> Key: HADOOP-18978
> URL: https://issues.apache.org/jira/browse/HADOOP-18978
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: István Fajth
> Priority: Major
>
> Currently ZKSignerSecretProvider and ZKDelegationTokenSecretManager classes
> are using the same ZookeeperClient class to create their respective Zookeeper
> connection via a Curator client.
> In order to have a standardized way of creating Zookeeper connections, we
> have two areas to fix:
> - YARN and its Curator instantiation
> - HDFS ZKFC, which currently uses a Zookeeper client directly, so it should
> also be migrated to Curator if we want to utilize the common instantiation.
> The problem that we would solve is that currently we have 3 places where we
> create ZK connections, and all of them has its own things, along with some
> duplications.
> We also have the HadoopZookeeperFactory, that I think we do not need. The
> only thing that is different for this is how we set up SASL permission
> provider for the connection. I believe that can also be unified, with that
> the whole Zookeeper connection creation can be pushed down to the recently
> added code that handles this for ZKDelegationTokenSecretManager and
> ZKSignerSecretProvider.
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