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Posted to issues@drill.apache.org by "Hanifi Gunes (JIRA)" <ji...@apache.org> on 2016/01/15 19:59:39 UTC
[jira] [Updated] (DRILL-4275) Refactor e/pstore interfaces and
their factories to provide a unified mechanism to access stores
[ https://issues.apache.org/jira/browse/DRILL-4275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hanifi Gunes updated DRILL-4275:
--------------------------------
Assignee: Deneche A. Hakim (was: Hanifi Gunes)
> Refactor e/pstore interfaces and their factories to provide a unified mechanism to access stores
> ------------------------------------------------------------------------------------------------
>
> Key: DRILL-4275
> URL: https://issues.apache.org/jira/browse/DRILL-4275
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Flow
> Reporter: Hanifi Gunes
> Assignee: Deneche A. Hakim
>
> We rely on E/PStore interfaces to persist data. Even though E/PStore stands for Ephemeral and Persistent stores respectively, the current design for EStore does not extend the interface/functionality of PStore at all, which hints abstraction for EStore is redundant. This issue proposes a new unified Store interface replacing the old E/PStore that exposes an additional method that report persistence level as follows:
> {code:title=Store interface}
> interface Store<V> {
> StoreMode getMode();
> V get(String key);
> ...
> }
> enum StoreMode {
> EPHEMERAL,
> PERSISTENT,
> ...
> }
> {code}
> The new design brings in less redundancy, more centralized code, ease to reason and maintain.
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