sunithabeeram commented on a change in pull request #3622: Start and stop
ControllerPeriodicTasks based on leadership changes
URL: https://github.com/apache/incubator-pinot/pull/3622#discussion_r243355620
##########
File path:
pinot-controller/src/main/java/com/linkedin/pinot/controller/helix/core/periodictask/ControllerPeriodicTask.java
##########
@@ -61,61 +63,61 @@ public void init() {
@Override
public void run() {
- if (!isLeader()) {
- skipLeaderTask();
- } else {
- List<String> allTableNames = _pinotHelixResourceManager.getAllTables();
- processLeaderTask(allTableNames);
- }
- }
-
- private void skipLeaderTask() {
- if (_isLeader) {
- LOGGER.info("Current pinot controller lost leadership.");
- _isLeader = false;
- onBecomeNotLeader();
- }
- LOGGER.info("Skip running periodic task: {} on non-leader controller",
_taskName);
- }
-
- private void processLeaderTask(List<String> tables) {
- if (!_isLeader) {
- LOGGER.info("Current pinot controller became leader. Starting {} with
running frequency of {} seconds.",
- _taskName, _intervalInSeconds);
- _isLeader = true;
- onBecomeLeader();
- }
+ _periodicTaskInProgress = true;
+ List<String> tableNamesWithType =
_pinotHelixResourceManager.getAllTables();
long startTime = System.currentTimeMillis();
- int numTables = tables.size();
+ int numTables = tableNamesWithType.size();
LOGGER.info("Start processing {} tables in periodic task: {}", numTables,
_taskName);
- process(tables);
+ process(tableNamesWithType);
LOGGER.info("Finish processing {} tables in periodic task: {} in {}ms",
numTables, _taskName,
(System.currentTimeMillis() - startTime));
+ _periodicTaskInProgress = false;
}
- /**
- * Does the following logic when losing the leadership. This should be done
only once during leadership transition.
- */
- public void onBecomeNotLeader() {
- }
- /**
- * Does the following logic when becoming lead controller. This should be
done only once during leadership transition.
- */
- public void onBecomeLeader() {
+ @Override
+ public void stop() {
+ _stopPeriodicTask = true;
+
+ LOGGER.info("Waiting for periodic task {} to finish, maxWaitTimeMillis =
{}", _taskName,
+ MAX_CONTROLLER_PERIODIC_TASK_STOP_TIME_MILLIS);
+ long millisToWait = MAX_CONTROLLER_PERIODIC_TASK_STOP_TIME_MILLIS;
+ while (_periodicTaskInProgress && millisToWait > 0) {
+ try {
+ long thisWait = 1000;
+ if (millisToWait < thisWait) {
+ thisWait = millisToWait;
+ }
+ Thread.sleep(thisWait);
+ millisToWait -= thisWait;
+ } catch (InterruptedException e) {
+ LOGGER.info("Interrupted: Remaining wait time {} (out of {})",
millisToWait,
+ MAX_CONTROLLER_PERIODIC_TASK_STOP_TIME_MILLIS);
+ break;
+ }
+ }
+ LOGGER.info("Wait completed. _periodicTaskInProgress = {}",
_periodicTaskInProgress);
+
+ cleanup();
}
+
/**
* Processes the task on the given tables.
*
- * @param tables List of table names
+ * @param tableNamesWithType List of table names
*/
- protected void process(List<String> tables) {
- preprocess();
- for (String table : tables) {
- processTable(table);
+ protected void process(List<String> tableNamesWithType) {
+ if (!isStopPeriodicTask()) {
Review comment:
shouldStopPeriodicTask() might read better.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
