morningman commented on a change in pull request #7423:
URL: https://github.com/apache/incubator-doris/pull/7423#discussion_r777277229
##########
File path: fe/fe-core/src/main/java/org/apache/doris/clone/TabletScheduler.java
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@@ -966,6 +970,39 @@ private boolean handleColocateRedundant(TabletSchedCtx
tabletCtx) throws SchedEx
throw new SchedException(Status.SCHEDULE_FAILED, "unable to delete any
colocate redundant replicas");
}
+ /**
+ * remove the replica which has the most version count, and much more than
others
+ * return true if delete one replica, otherwise, return false.
+ */
+ private boolean handleReplicaTooSlow(TabletSchedCtx tabletCtx) throws
SchedException {
+ Replica chosenReplica = null;
+ Replica minReplica = null;
+ long maxVersionCount = -1;
+ long minVersionCount = Integer.MAX_VALUE;
+ for (Replica replica : tabletCtx.getReplicas()) {
+ if (replica.getVersionCount() > maxVersionCount) {
+ maxVersionCount = replica.getVersionCount();
+ chosenReplica = replica;
+ }
+ if (replica.getVersionCount() < minVersionCount) {
+ minVersionCount = replica.getVersionCount();
+ minReplica = replica;
+ }
+ }
+
+ if (chosenReplica != null && !chosenReplica.equals(minReplica) &&
minReplica.isAlive()) {
+ try {
+
Catalog.getCurrentCatalog().setReplicaStatus(tabletCtx.getTabletId(),
chosenReplica.getBackendId(),
+ Replica.ReplicaStatus.BAD);
+ throw new SchedException(Status.FINISHED, "colocate redundant
replica is deleted");
Review comment:
```suggestion
throw new SchedException(Status.FINISHED, "set slow replica
as bad");
```
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