[feat](nereids)disable join reorder if any table row count is not ava…

…ilable (apache#43000)

in previous PR apache#41790, if any Olap table row count is not available,
planner set disable_join_reorder true.
this pr make this rule apply to external table.

Issue Number: close #xxx

<!--Describe your changes.-->

fe/fe-core/src/main/java/org/apache/doris/nereids/NereidsPlanner.java

@@ -54,11 +54,11 @@
 import org.apache.doris.nereids.trees.expressions.SlotReference;
 import org.apache.doris.nereids.trees.plans.ComputeResultSet;
 import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.algebra.CatalogRelation;
 import org.apache.doris.nereids.trees.plans.commands.ExplainCommand.ExplainLevel;
 import org.apache.doris.nereids.trees.plans.distribute.DistributePlanner;
 import org.apache.doris.nereids.trees.plans.distribute.DistributedPlan;
 import org.apache.doris.nereids.trees.plans.distribute.FragmentIdMapping;
-import org.apache.doris.nereids.trees.plans.logical.LogicalOlapScan;
 import org.apache.doris.nereids.trees.plans.logical.LogicalPlan;
 import org.apache.doris.nereids.trees.plans.logical.LogicalSqlCache;
 import org.apache.doris.nereids.trees.plans.physical.PhysicalPlan;
@@ -272,8 +272,8 @@ private Plan planWithoutLock(
         //   2. ut test. In ut test, FeConstants.enableInternalSchemaDb is false or FeConstants.runningUnitTest is true
         if (FeConstants.enableInternalSchemaDb && !FeConstants.runningUnitTest
                 && !cascadesContext.isLeadingDisableJoinReorder()) {
-            List<LogicalOlapScan> scans = cascadesContext.getRewritePlan()
-                    .collectToList(LogicalOlapScan.class::isInstance);
+            List<CatalogRelation> scans = cascadesContext.getRewritePlan()
+                    .collectToList(CatalogRelation.class::isInstance);
             Optional<String> disableJoinReorderReason = StatsCalculator
                     .disableJoinReorderIfStatsInvalid(scans, cascadesContext);
             disableJoinReorderReason.ifPresent(statementContext::setDisableJoinReorderReason);

fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java

@@ -217,32 +217,34 @@ public Map<String, ColumnStatistic> getTotalColumnStatisticMap() {
      * 2. col stats ndv=0 but minExpr or maxExpr is not null
      * 3. ndv > 10 * rowCount
      */
-    public static Optional<String> disableJoinReorderIfStatsInvalid(List<LogicalOlapScan> scans,
+    public static Optional<String> disableJoinReorderIfStatsInvalid(List<CatalogRelation> scans,
             CascadesContext context) {
         StatsCalculator calculator = new StatsCalculator(context);
         if (ConnectContext.get() == null) {
             // ut case
             return Optional.empty();
         }
-        for (LogicalOlapScan scan : scans) {
-            double rowCount = calculator.getOlapTableRowCount(scan);
+        for (CatalogRelation scan : scans) {
+            double rowCount = calculator.getTableRowCount(scan);
             // row count not available
             if (rowCount == -1) {
                 LOG.info("disable join reorder since row count not available: "
                         + scan.getTable().getNameWithFullQualifiers());
                 return Optional.of("table[" + scan.getTable().getName() + "] row count is invalid");
             }
-            // ndv abnormal
-            Optional<String> reason = calculator.checkNdvValidation(scan, rowCount);
-            if (reason.isPresent()) {
-                try {
-                    ConnectContext.get().getSessionVariable().disableNereidsJoinReorderOnce();
-                    LOG.info("disable join reorder since col stats invalid: "
-                            + reason.get());
-                } catch (Exception e) {
-                    LOG.info("disableNereidsJoinReorderOnce failed");
+            if (scan instanceof OlapScan) {
+                // ndv abnormal
+                Optional<String> reason = calculator.checkNdvValidation((OlapScan) scan, rowCount);
+                if (reason.isPresent()) {
+                    try {
+                        ConnectContext.get().getSessionVariable().disableNereidsJoinReorderOnce();
+                        LOG.info("disable join reorder since col stats invalid: "
+                                + reason.get());
+                    } catch (Exception e) {
+                        LOG.info("disableNereidsJoinReorderOnce failed");
+                    }
+                    return reason;
                 }
-                return reason;
             }
         }
         return Optional.empty();
@@ -398,6 +400,14 @@ private void checkIfUnknownStatsUsedAsKey(StatisticsBuilder builder) {
         }
     }
 
+    private double getTableRowCount(CatalogRelation scan) {
+        if (scan instanceof OlapScan) {
+            return getOlapTableRowCount((OlapScan) scan);
+        } else {
+            return scan.getTable().getRowCount();
+        }
+    }
+
     /**
      * if the table is not analyzed and BE does not report row count, return -1
      */
@@ -1082,11 +1092,12 @@ private ColumnStatistic getColumnStatistic(TableIf table, String colName, long i
     private Statistics computeCatalogRelation(CatalogRelation catalogRelation) {
         StatisticsBuilder builder = new StatisticsBuilder();
 
+        double tableRowCount = catalogRelation.getTable().getRowCount();
         // for FeUt, use ColumnStatistic.UNKNOWN
         if (!FeConstants.enableInternalSchemaDb
                 || ConnectContext.get() == null
                 || ConnectContext.get().getSessionVariable().internalSession) {
-            builder.setRowCount(catalogRelation.getTable().getRowCountForNereids());
+            builder.setRowCount(Math.max(1, tableRowCount));
             for (Slot slot : catalogRelation.getOutput()) {
                 builder.putColumnStatistics(slot, ColumnStatistic.UNKNOWN);
             }
@@ -1102,8 +1113,8 @@ private Statistics computeCatalogRelation(CatalogRelation catalogRelation) {
             }
         }
         Set<SlotReference> slotSet = slotSetBuilder.build();
-        double tableRowCount = catalogRelation.getTable().getRowCount();
         if (tableRowCount <= 0) {
+            tableRowCount = 1;
             // try to get row count from col stats
             for (SlotReference slot : slotSet) {
                 ColumnStatistic cache = getColumnStatsFromTableCache(catalogRelation, slot);