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https://issues.apache.org/jira/browse/DRILL-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151144#comment-16151144
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ASF GitHub Bot commented on DRILL-5723:
---------------------------------------
Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/923#discussion_r136659980
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/server/options/SystemOptionManager.java
---
@@ -70,11 +69,13 @@
* </p>
*/
-public class SystemOptionManager extends BaseOptionManager implements
OptionManager, AutoCloseable {
+public class SystemOptionManager extends BaseOptionManager implements
AutoCloseable {
private static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(SystemOptionManager.class);
- private CaseInsensitiveMap<OptionValidator> VALIDATORS;
- public void populateValidators() {
+ public static final CaseInsensitiveMap<OptionValidator>
DEFAULT_VALIDATORS =
--- End diff --
A compromise is to introduce a two-level table.
* Global table of option metadata. Perhaps evolve the validator to be that
metadata. Or, better, define a new `OptionDefinition` class, an attribute of
which is the validator.
* Per-Drillbit table of defaults resolved from the config system using the
information from the definitions.
If we do this, we should clean up all the messy enums in this system. The
current ones confuse everyone. We want:
* Definition: The allowed scope: session-only or both session and system.
* Visibility: public or hidden (this change)
* Data type: (long, double, string, etc.)
For a value:
* Scope: default, session or system.
Sometimes it is easier to fix the original problems than to keep working
around an outdated design...
> Support System/Session Internal Options
> ---------------------------------------
>
> Key: DRILL-5723
> URL: https://issues.apache.org/jira/browse/DRILL-5723
> Project: Apache Drill
> Issue Type: New Feature
> Reporter: Timothy Farkas
> Assignee: Timothy Farkas
>
> This is a feature proposed by [~ben-zvi].
> Currently all the options are accessible by the user in sys.options. We would
> like to add internal options which can be altered, but are not visible in the
> sys.options table. These internal options could be seen by another alias
> select * from internal.options. The intention would be to put new options we
> weren't comfortable with exposing to the end user in this table.
> After the options and their corresponding features are considered stable they
> could be changed to appear in the sys.option table.
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