[BugFix] Fix incorrect materialized view row count (#51944)

Signed-off-by: kaijian.ding <[email protected]>

fe/fe-core/src/main/java/com/starrocks/catalog/TabletStatMgr.java

@@ -39,6 +39,7 @@
 import com.google.common.collect.Maps;
 import com.starrocks.catalog.MaterializedIndex.IndexExtState;
 import com.starrocks.common.Config;
+import com.starrocks.common.Pair;
 import com.starrocks.common.util.FrontendDaemon;
 import com.starrocks.common.util.concurrent.lock.LockType;
 import com.starrocks.common.util.concurrent.lock.Locker;
@@ -116,7 +117,7 @@ protected void runAfterCatalogReady() {
 
  // NOTE: calculate the row first with read lock, then update the stats with write lock
  locker.lockTableWithIntensiveDbLock(db.getId(), table.getId(), LockType.READ);
- Map<Long, Long> indexRowCountMap = Maps.newHashMap();
+ Map<Pair<Long, Long>, Long> indexRowCountMap = Maps.newHashMap();
  try {
  OlapTable olapTable = (OlapTable) table;
  for (Partition partition : olapTable.getAllPartitions()) {
@@ -129,7 +130,8 @@ protected void runAfterCatalogReady() {
  for (Tablet tablet : index.getTablets()) {
  indexRowCount += tablet.getRowCount(version);
  } // end for tablets
- indexRowCountMap.put(index.getId(), indexRowCount);
+ indexRowCountMap.put(Pair.create(physicalPartition.getId(), index.getId()),
+ indexRowCount);
  if (!olapTable.isTempPartition(partition.getId())) {
  totalRowCount += indexRowCount;
  }
@@ -150,7 +152,8 @@ protected void runAfterCatalogReady() {
  for (PhysicalPartition physicalPartition : partition.getSubPartitions()) {
  for (MaterializedIndex index :
  physicalPartition.getMaterializedIndices(IndexExtState.VISIBLE)) {
- Long indexRowCount = indexRowCountMap.get(index.getId());
+ Long indexRowCount =
+ indexRowCountMap.get(Pair.create(physicalPartition.getId(), index.getId()));
  if (indexRowCount != null) {
  index.setRowCount(indexRowCount);
  }