Hanifi Gunes created DRILL-4275:
-----------------------------------
Summary: 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: Hanifi Gunes
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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