keith-turner commented on code in PR #5575:
URL: https://github.com/apache/accumulo/pull/5575#discussion_r2109371093
##########
server/manager/src/main/java/org/apache/accumulo/manager/Manager.java:
##########
@@ -1917,19 +1920,22 @@ public boolean isUpgrading() {
return upgradeCoordinator.getStatus() !=
UpgradeCoordinator.UpgradeStatus.COMPLETE;
}
- void initializeBalancer() {
+ private void initializeBalancer() {
+ String configuredBalancerClass =
getConfiguration().get(Property.MANAGER_TABLET_BALANCER);
try {
- getContext().getPropStore().getCache().removeAll();
- getConfiguration().invalidateCache();
- log.debug("Attempting to reinitialize balancer using class {}",
- getConfiguration().get(Property.MANAGER_TABLET_BALANCER));
- var localTabletBalancer =
Property.createInstanceFromPropertyName(getConfiguration(),
- Property.MANAGER_TABLET_BALANCER, TabletBalancer.class, new
DoNothingBalancer());
- localTabletBalancer.init(balancerEnvironment);
- tabletBalancer = localTabletBalancer;
+ if (tabletBalancer == null
+ ||
!tabletBalancer.getClass().getName().equals(configuredBalancerClass)) {
+ log.debug("Attempting to initialize balancer using class {}, was {}",
+ configuredBalancerClass,
+ tabletBalancer == null ? "null" :
tabletBalancer.getClass().getName());
+ var localTabletBalancer =
Property.createInstanceFromPropertyName(getConfiguration(),
+ Property.MANAGER_TABLET_BALANCER, TabletBalancer.class, new
DoNothingBalancer());
+ localTabletBalancer.init(balancerEnvironment);
+ tabletBalancer = localTabletBalancer;
Review Comment:
There used to be the following log message from
ManagerClientService.updatePlugins that logged something at info once the
change was complete. Would be nice to still have that. The following probably
will not compile, copied the log message exactly from the old place in the code.
```suggestion
tabletBalancer = localTabletBalancer;
log.info("tablet balancer changed to {}",
manager.getBalancerClass().getName());
```
##########
server/manager/src/main/java/org/apache/accumulo/manager/ManagerClientServiceHandler.java:
##########
@@ -591,15 +584,6 @@ private void alterTableProperty(TCredentials c, String
tableName, String propert
}
}
- private void updatePlugins(String property) {
- // resolve without warning; any warnings should have already occurred
- String resolved = DeprecatedPropertyUtil.getReplacementName(property,
(log, replacement) -> {});
- if (resolved.equals(Property.MANAGER_TABLET_BALANCER.getKey())) {
- manager.initializeBalancer();
- log.info("tablet balancer changed to {}",
manager.getBalancerClass().getName());
Review Comment:
Is the getBalancerClass() method in the manager still used by other stuff?
Wondering if it could be removed.
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