J-HowHuang commented on code in PR #16722:
URL: https://github.com/apache/pinot/pull/16722#discussion_r2311070189
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/relocation/SegmentRelocator.java:
##########
@@ -182,34 +183,46 @@ BlockingQueue<String> getWaitingQueue() {
return _waitingQueue;
}
- private void rebalanceTable(String tableNameWithType) {
+ @VisibleForTesting
+ void rebalanceTable(String tableNameWithType) {
TableConfig tableConfig =
_pinotHelixResourceManager.getTableConfig(tableNameWithType);
Preconditions.checkState(tableConfig != null, "Failed to find table config
for table: %s", tableNameWithType);
+ RebalanceConfig rebalanceConfig = new RebalanceConfig();
+
boolean relocate = false;
- if (TierConfigUtils.shouldRelocateToTiers(tableConfig)) {
- relocate = true;
- LOGGER.info("Relocating segments to tiers for table: {}",
tableNameWithType);
- }
if (tableConfig.getTableType() == TableType.REALTIME
&&
InstanceAssignmentConfigUtils.shouldRelocateCompletedSegments(tableConfig)) {
relocate = true;
LOGGER.info("Relocating COMPLETED segments for table: {}",
tableNameWithType);
}
+ if (TierConfigUtils.shouldRelocateToTiers(tableConfig)) {
Review Comment:
rebalance part will always trigger then. if there's no segment to move in
fact, the rebalance will result a no-op, and then this part of code checks if
target tier and current tier mismatch, if so it will then send a reload message
on that segment
https://github.com/apache/pinot/blob/fb58b63d26d6e6577e2ec758b0a4a15847675211/pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/relocation/SegmentRelocator.java#L313-L320
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