[FEAT MERGE] 4.2 add trans_debug_info for 4377

Co-authored-by: Handora <qcdsr970209@gmail.com>

src/sql/engine/table/ob_index_lookup_op_impl.cpp

@@ -183,5 +183,34 @@ int ObIndexLookupOpImpl::get_next_rows(int64_t &count, int64_t capacity)
   return ret;
 }
 
+int ObIndexLookupOpImpl::build_trans_datum(ObExpr *expr,
+                                           ObEvalCtx *eval_ctx,
+                                           ObIAllocator &alloc,
+                                           ObDatum *&datum_ptr)
+{
+  int ret = OB_SUCCESS;
+  datum_ptr = nullptr;
+  if (OB_ISNULL(expr) || OB_ISNULL(eval_ctx)) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("unexpected nullptr", K(ret), K(expr), K(eval_ctx));
+  }
+  if (OB_SUCC(ret)) {
+    void *buf = nullptr;
+    ObDatum &col_datum = expr->locate_expr_datum(*eval_ctx);
+    int64_t pos = sizeof(ObDatum);
+    int64_t len = sizeof(ObDatum) + col_datum.len_;
+    if (OB_ISNULL(buf = alloc.alloc(len))) {
+      ret = OB_ALLOCATE_MEMORY_FAILED;
+      LOG_WARN("allocate buffer failed", K(ret));
+    } else if (FALSE_IT(datum_ptr = new (buf) ObDatum)) {
+      // do nothing
+    } else if (OB_FAIL(datum_ptr->deep_copy(col_datum, static_cast<char *>(buf), sizeof(ObDatum) + col_datum.len_, pos))) {
+      LOG_WARN("failed to deep copy datum", K(ret), K(pos), K(len));
+    }
+  }
+
+  return ret;
+}
+
 } // end namespace sql
 } // end namespace oceanbase

src/sql/engine/table/ob_index_lookup_op_impl.h

@@ -75,6 +75,7 @@ public:
   virtual ObEvalCtx & get_eval_ctx() = 0;
   virtual const ExprFixedArray & get_output_expr() = 0;
   virtual int switch_index_table_and_rowkey_group_id() { return OB_SUCCESS; }
+  int build_trans_datum(ObExpr *expr, ObEvalCtx *eval_ctx, ObIAllocator &alloc, ObDatum *&datum_ptr);
 
 protected:
   LookupType lookup_type_;

src/sql/engine/table/ob_table_scan_op.cpp

@@ -3159,6 +3159,22 @@ int ObGlobalIndexLookupOpImpl::process_data_table_rowkey()
       scan_param.is_get_ = true;
     }
   }
+
+  if (OB_SUCC(ret) && get_lookup_ctdef()->trans_info_expr_ != nullptr) {
+    void *buf = nullptr;
+    ObDatum *datum_ptr = nullptr;
+    if (OB_FAIL(build_trans_datum(get_lookup_ctdef()->trans_info_expr_,
+                                  &(table_scan_op_->get_eval_ctx()),
+                                  lookup_memctx_->get_arena_allocator(),
+                                  datum_ptr))) {
+
+    } else if (OB_ISNULL(datum_ptr)) {
+      ret = OB_ERR_UNEXPECTED;
+      LOG_WARN("unexpected null", K(ret));
+    } else if (OB_FAIL(das_scan_op->trans_info_array_.push_back(datum_ptr))) {
+      LOG_WARN("fail to push back trans info array", K(ret), KPC(datum_ptr));
+    }
+  }
   return ret;
 }
 
@@ -3322,15 +3338,45 @@ int ObGlobalIndexLookupOpImpl::check_lookup_row_cnt()
                 "index_table_id", table_scan_op_->get_tsc_spec().get_ref_table_id(),
                 KPC(my_session->get_tx_desc()));
       //now to dump lookup das task info
+      int64_t rownum = 0;
       for (DASTaskIter task_iter = das_ref_.begin_task_iter(); !task_iter.is_end(); ++task_iter) {
         ObDASScanOp *das_op = static_cast<ObDASScanOp*>(*task_iter);
-        LOG_INFO("dump TableLookup DAS Task range",
-                 "scan_range", das_op->get_scan_param().key_ranges_,
-                 "range_array_pos", das_op->get_scan_param().range_array_pos_,
-                 "tablet_id", das_op->get_tablet_id());
+        if (das_op->trans_info_array_.count() == das_op->get_scan_param().key_ranges_.count()) {
+          for (int64_t i = 0; i < das_op->trans_info_array_.count(); i++) {
+            rownum++;
+            ObDatum *datum = das_op->trans_info_array_.at(i);
+            LOG_ERROR("dump TableLookup DAS Task range and trans_info",
+                K(rownum), KPC(datum),
+                K(das_op->get_scan_param().key_ranges_.at(i)),
+                K(das_op->get_tablet_id()));
+          }
+        } else {
+          for (int64_t i = 0; i < das_op->get_scan_param().key_ranges_.count(); i++) {
+            rownum++;
+            LOG_ERROR("dump TableLookup DAS Task range",
+                K(rownum),
+                K(das_op->get_scan_param().key_ranges_.at(i)),
+                K(das_op->get_tablet_id()));
+          }
+        }
       }
     }
   }
+
+  int simulate_error = EVENT_CALL(EventTable::EN_DAS_SIMULATE_DUMP_WRITE_BUFFER);
+  if (0 != simulate_error) {
+    for (DASTaskIter task_iter = das_ref_.begin_task_iter(); !task_iter.is_end(); ++task_iter) {
+      ObDASScanOp *das_op = static_cast<ObDASScanOp*>(*task_iter);
+      for (int64_t i = 0; i < das_op->trans_info_array_.count(); i++) {
+        ObDatum *datum = das_op->trans_info_array_.at(i);
+        LOG_INFO("dump TableLookup DAS Task trans info", K(i),
+            KPC(das_op->trans_info_array_.at(i)),
+            K(das_op->get_scan_param().key_ranges_.at(i)),
+            K(das_op->get_tablet_id()));
+      }
+    }
+  }
+
   return ret;
 }