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https://issues.apache.org/jira/browse/DRILL-4286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16252585#comment-16252585
]
ASF GitHub Bot commented on DRILL-4286:
---------------------------------------
Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/921#discussion_r150974066
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/server/DrillbitContext.java
---
@@ -157,10 +157,29 @@ public DrillConfig getConfig() {
return context.getConfig();
}
- public Collection<DrillbitEndpoint> getBits() {
+ public Collection<DrillbitEndpoint> getAvailableBits() {
return coord.getAvailableEndpoints();
}
+ public Collection<DrillbitEndpoint> getBits() {
+ return coord.getOnlineEndPoints();
+ }
+
+ public boolean isOnline(DrillbitEndpoint endpoint) { return
endpoint.getState().equals(DrillbitEndpoint.State.ONLINE); }
+
+ public boolean isForemanOnline() {
+ DrillbitEndpoint foreman = getEndpoint();
+ Collection<DrillbitEndpoint> dbs = getAvailableBits();
+ for( DrillbitEndpoint db : dbs) {
+ if( db.getAddress().equals(foreman.getAddress()) && db.getUserPort()
== foreman.getUserPort()) {
--- End diff --
`if( db...` --> `if (db...`
Also, `for( Drillbit...` --> `for (Drillbit...`
> 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
>
> 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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