Jackie-Jiang commented on a change in pull request #4560: Refactor
toggleInstanceState API
URL: https://github.com/apache/incubator-pinot/pull/4560#discussion_r318233310
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File path:
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
##########
@@ -2142,48 +2142,59 @@ public PinotResourceManagerResponse
dropInstance(String instanceName) {
* @param timeOutInSeconds: Time-out for setting ideal-state.
* @return
*/
- public PinotResourceManagerResponse toggleInstance(String instanceName,
boolean toggle, int timeOutInSeconds) {
+ private PinotResourceManagerResponse toggleInstance(String instanceName,
boolean toggle, int timeOutInSeconds) {
if (!instanceExists(instanceName)) {
return PinotResourceManagerResponse.failure("Instance " + instanceName +
" not found");
}
_helixAdmin.enableInstance(_helixClusterName, instanceName, toggle);
long deadline = System.currentTimeMillis() + 1000 * timeOutInSeconds;
- boolean toggleSucceed = false;
- String beforeToggleStates =
- (toggle) ? SegmentOnlineOfflineStateModel.OFFLINE :
SegmentOnlineOfflineStateModel.ONLINE;
+ boolean toggleSucceed;
+ String offlineState = SegmentOnlineOfflineStateModel.OFFLINE;
while (System.currentTimeMillis() < deadline) {
toggleSucceed = true;
PropertyKey liveInstanceKey = _keyBuilder.liveInstance(instanceName);
LiveInstance liveInstance =
_helixDataAccessor.getProperty(liveInstanceKey);
if (liveInstance == null) {
- return toggle ? PinotResourceManagerResponse.FAILURE :
PinotResourceManagerResponse.SUCCESS;
- }
- PropertyKey instanceCurrentStatesKey =
_keyBuilder.currentStates(instanceName, liveInstance.getSessionId());
- List<CurrentState> instanceCurrentStates =
_helixDataAccessor.getChildValues(instanceCurrentStatesKey);
- if (instanceCurrentStates == null) {
- return PinotResourceManagerResponse.SUCCESS;
+ if (!toggle) {
+ // If we disable the instance, we actually don't care whether live
instance being null. Thus, returning success should be good.
+ // Otherwise, wait for at most 10 seconds.
+ return PinotResourceManagerResponse.SUCCESS;
+ }
} else {
- for (CurrentState currentState : instanceCurrentStates) {
- for (String state : currentState.getPartitionStateMap().values()) {
- if (beforeToggleStates.equals(state)) {
- toggleSucceed = false;
+ // Checks all the current states fall into the target states
+ PropertyKey instanceCurrentStatesKey =
_keyBuilder.currentStates(instanceName, liveInstance.getSessionId());
+ List<CurrentState> instanceCurrentStates =
_helixDataAccessor.getChildValues(instanceCurrentStatesKey);
+ if (instanceCurrentStates == null) {
+ return PinotResourceManagerResponse.SUCCESS;
+ } else {
+ for (CurrentState currentState : instanceCurrentStates) {
+ for (String state : currentState.getPartitionStateMap().values()) {
+ // If instance is enabled, all the partitions should not
eventually be offline.
+ // If instance is disabled, all the partitions should eventually
be offline.
Review comment:
That is not true. For LLC segments, currentState might be OFFLINE because
idealState can be OFFLINE. @mcvsubbu Please confirm
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