luwei16 commented on code in PR #19167:
URL: https://github.com/apache/doris/pull/19167#discussion_r1181231182
##########
fe/fe-core/src/main/java/org/apache/doris/datasource/InternalCatalog.java:
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@@ -2538,6 +2541,13 @@ private void createTablets(String clusterName,
MaterializedIndex index, ReplicaS
if (chooseBackendsArbitrary) {
backendsPerBucketSeq = Maps.newHashMap();
}
+
+ Map<Tag, Integer> nextIndexs = new HashMap<>();
+ for (Map.Entry<Tag, Short> entry :
replicaAlloc.getAllocMap().entrySet()) {
+ // TODO: random roundrobin starting position
+ nextIndexs.put(entry.getKey(), 0);
Review Comment:
> I think of an implementation, for reference:
>
> 1. Select all candidate BE list according to the conditions (`tag`,
`storage_medium`, etc.).
> 2. In the list, select the BE with the least number of tablets as the
starting node to start executing RoundRobin.
>
> This method should be logically clearer, which is to separate the step of
"filtering BE by condition" from the "execution of RR".
done
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