Github user sudheeshkatkam commented on a diff in the pull request:
https://github.com/apache/drill/pull/159#discussion_r40022217
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/server/options/SessionOptionManager.java
---
@@ -20,14 +20,21 @@
import com.google.common.base.Predicate;
import com.google.common.collect.Collections2;
import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.drill.common.exceptions.UserException;
import org.apache.drill.common.map.CaseInsensitiveMap;
import org.apache.drill.exec.rpc.user.UserSession;
+import org.apache.drill.exec.server.options.OptionValue.OptionType;
import java.util.Collection;
import java.util.Map;
/**
- * {@link OptionManager} that holds options within {@link
org.apache.drill.exec.rpc.user.UserSession} context.
+ * {@link OptionManager} that holds options within {@link
org.apache.drill.exec.rpc.user.UserSession} context. Options
+ * set at the session level only apply to queries that you run during the
current Drill connection. Session level
+ * settings override system level settings.
+ *
+ * NOTE that currently, the effects of deleting a short lived option (see
{@link OptionValidator#isShortLived}) are
+ * undefined.
--- End diff --
Should I add a TODO and create a ticket?
(personally I don't think this is worth a JIRA yet)
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