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https://issues.apache.org/jira/browse/DRILL-4286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16238260#comment-16238260
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ASF GitHub Bot commented on DRILL-4286:
---------------------------------------
Github user bitblender commented on a diff in the pull request:
https://github.com/apache/drill/pull/921#discussion_r148686859
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/server/Drillbit.java ---
@@ -69,14 +73,30 @@
public final static String SYSTEM_OPTIONS_NAME =
"org.apache.drill.exec.server.Drillbit.system_options";
- private boolean isClosed = false;
-
private final ClusterCoordinator coord;
private final ServiceEngine engine;
private final PersistentStoreProvider storeProvider;
private final WorkManager manager;
private final BootStrapContext context;
private final WebServer webServer;
+ private final int gracePeriod;
+ private DrillbitStateManager stateManager;
+
+ public void setQuiescentMode(boolean quiescentMode) {
+ this.quiescentMode = quiescentMode;
+ }
+
+ private volatile boolean quiescentMode;
+
+ public void setForceful_shutdown(boolean forceful_shutdown) {
+ this.forceful_shutdown = forceful_shutdown;
+ }
+
+ private volatile boolean forceful_shutdown = false;
--- End diff --
any reason why you did not camel-case this variable?
> Have an ability to put server in quiescent mode of operation
> ------------------------------------------------------------
>
> Key: DRILL-4286
> URL: https://issues.apache.org/jira/browse/DRILL-4286
> Project: Apache Drill
> Issue Type: New Feature
> Components: Execution - Flow
> Reporter: Victoria Markman
> Assignee: Venkata Jyothsna Donapati
> Priority: Major
>
> I think drill will benefit from mode of operation that is called "quiescent"
> in some databases.
> From IBM Informix server documentation:
> {code}
> Change gracefully from online to quiescent mode
> Take the database server gracefully from online mode to quiescent mode to
> restrict access to the database server without interrupting current
> processing. After you perform this task, the database server sets a flag that
> prevents new sessions from gaining access to the database server. The current
> sessions are allowed to finish processing. After you initiate the mode
> change, it cannot be canceled. During the mode change from online to
> quiescent, the database server is considered to be in Shutdown mode.
> {code}
> This is different from shutdown, when processes are terminated.
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