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https://issues.apache.org/jira/browse/DRILL-6564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vitalii Diravka updated DRILL-6564:
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Summary: Storage Plugins Handler improvements (was: Storage plugins
versioning and separate storage plugins handler service)
> Storage Plugins Handler improvements
> ------------------------------------
>
> Key: DRILL-6564
> URL: https://issues.apache.org/jira/browse/DRILL-6564
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.13.0
> Reporter: Vitalii Diravka
> Priority: Minor
> Fix For: Future
>
>
> Storage plugin handler can be improved with:
> * Incremental update of storage plugins configs. For example in case of
> Hive, oldPluginConfig may have a key ("hive.metastore.sasl.enabled") with
> value true in configProps whereas newPluginConfig doesn't have this key at
> all. In that case if Incremental Update is enabled the old value for the
> property should remain.
> * Versioning can be implemented by introducing timestamp:long in the
> DataChangeVersion.
> Zookeper ZNode stats has timestamp values. So timestamp when
> storage-plugins.conf file was created can be used in the process of updating
> plugin. When timestamp of file and plugin config from PersistentStore is the
> same - nothing need to do
> * The approach of updating plugins configs without restarting drillbit could
> be implemented.
> * It can be extracted to the separate service, like Installer Agent, which
> can generate _storage-plugins.conf_ files depends on the environment and
> system env properties.
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