Revert "[fix](compaction) fix the longest continuous rowsets cannot b…

…e selected when missing rowsets (apache#38728) (apache#39262)" (apache#40375)

This reverts commit c9949f2.

This pr may increase the probability of full clone failure, so revert it
first.

be/src/olap/compaction.cpp

@@ -1132,35 +1132,21 @@ Status Compaction::find_longest_consecutive_version(std::vector<RowsetSharedPtr>
     if (rowsets->empty()) {
         return Status::OK();
     }
-
     RowsetSharedPtr prev_rowset = rowsets->front();
     size_t i = 1;
-    int max_start = 0;
-    int max_length = 1;
-
-    int start = 0;
-    int length = 1;
     for (; i < rowsets->size(); ++i) {
         RowsetSharedPtr rowset = (*rowsets)[i];
         if (rowset->start_version() != prev_rowset->end_version() + 1) {
             if (missing_version != nullptr) {
                 missing_version->push_back(prev_rowset->version());
                 missing_version->push_back(rowset->version());
             }
-            start = i;
-            length = 1;
-        } else {
-            length++;
+            break;
         }
-
-        if (length > max_length) {
-            max_start = start;
-            max_length = length;
-        }
-
         prev_rowset = rowset;
     }
-    *rowsets = {rowsets->begin() + max_start, rowsets->begin() + max_start + max_length};
+
+    rowsets->resize(i);
     return Status::OK();
 }
 

be/src/olap/cumulative_compaction.cpp

@@ -111,11 +111,10 @@ Status CumulativeCompaction::pick_rowsets_to_compact() {
     std::vector<Version> missing_versions;
     RETURN_IF_ERROR(find_longest_consecutive_version(&candidate_rowsets, &missing_versions));
     if (!missing_versions.empty()) {
-        DCHECK(missing_versions.size() % 2 == 0);
+        DCHECK(missing_versions.size() == 2);
         LOG(WARNING) << "There are missed versions among rowsets. "
-                     << "total missed version size: " << missing_versions.size() / 2
-                     << " first missed version prev rowset verison=" << missing_versions[0]
-                     << ", first missed version next rowset version=" << missing_versions[1]
+                     << "prev rowset verison=" << missing_versions[0]
+                     << ", next rowset version=" << missing_versions[1]
                      << ", tablet=" << _tablet->tablet_id();
     }