somandal commented on code in PR #15175:
URL: https://github.com/apache/pinot/pull/15175#discussion_r1985468516
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -271,23 +271,25 @@ public String load(String instanceId) {
}
_lineageManager = lineageManager;
_rebalancePreChecker = rebalancePreChecker;
- _rebalancePreChecker.init(this, executorService);
+ _rebalancePreChecker.init(this, executorService, diskUtilizationThreshold);
}
public PinotHelixResourceManager(ControllerConf controllerConf, @Nullable
ExecutorService executorService) {
this(controllerConf.getZkStr(), controllerConf.getHelixClusterName(),
controllerConf.getDataDir(),
controllerConf.tenantIsolationEnabled(),
controllerConf.getEnableBatchMessageMode(),
controllerConf.getDeletedSegmentsRetentionInDays(),
controllerConf.tieredSegmentAssignmentEnabled(),
LineageManagerFactory.create(controllerConf),
-
RebalancePreCheckerFactory.create(controllerConf.getRebalancePreCheckerClass()),
executorService);
+
RebalancePreCheckerFactory.create(controllerConf.getRebalancePreCheckerClass()),
executorService,
+ controllerConf.getDiskUtilizationThreshold());
}
public PinotHelixResourceManager(ControllerConf controllerConf) {
this(controllerConf.getZkStr(), controllerConf.getHelixClusterName(),
controllerConf.getDataDir(),
controllerConf.tenantIsolationEnabled(),
controllerConf.getEnableBatchMessageMode(),
controllerConf.getDeletedSegmentsRetentionInDays(),
controllerConf.tieredSegmentAssignmentEnabled(),
LineageManagerFactory.create(controllerConf),
-
RebalancePreCheckerFactory.create(controllerConf.getRebalancePreCheckerClass()),
null);
+
RebalancePreCheckerFactory.create(controllerConf.getRebalancePreCheckerClass()),
null,
+ controllerConf.getDiskUtilizationThreshold());
Review Comment:
Discussed with @J-HowHuang and @rajagopr and decided for rebalance it is
better to use a lower threshold of say 0.9 for flagging purposes.
@J-HowHuang to add a new controller config for now for rebalance purposes
and default it to 0.9: `controller.rebalance.disk.utilization.threshold` (feel
free to choose a better name)
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