[opt](analyze) add fe conf for force analyze external table (#59587)

Author: zhangstar333

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -2722,6 +2722,10 @@ public class Config extends ConfigBase {
     @ConfField(mutable = true)
     public static boolean force_sample_analyze = false; // avoid full analyze for performance reason
 
+    @ConfField(mutable = true)
+    public static boolean force_analyze_for_external = false;
+
+
     @ConfField(mutable = true, description = {
             "Export任务允许的最大分区数量",
             "The maximum number of partitions allowed by Export job"})

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalTable.java

@@ -26,6 +26,7 @@
 import org.apache.doris.catalog.TableIndexes;
 import org.apache.doris.catalog.constraint.Constraint;
 import org.apache.doris.common.AnalysisException;
+import org.apache.doris.common.Config;
 import org.apache.doris.common.Pair;
 import org.apache.doris.common.io.Text;
 import org.apache.doris.common.io.Writable;
@@ -323,6 +324,9 @@ public List<Column> getColumns() {
     @Override
     public boolean autoAnalyzeEnabled() {
         makeSureInitialized();
+        if (Config.force_analyze_for_external) {
+            return true;
+        }
         String policy = catalog.getTableAutoAnalyzePolicy().get(Pair.of(dbName, name));
         if (policy == null) {
             return catalog.enableAutoAnalyze();