BUG#24363 If the table structure has been changed, the default action about the restore will fail.

You can skip the table structure check with --skip-table-check (-s) option. 


storage/ndb/tools/restore/consumer.hpp:
  The method is used to judge whether the table structure has been changed when restoring the data.
storage/ndb/tools/restore/consumer_restore.cpp:
  The method is used to judge whether the table structure has been changed when restoring the data.
storage/ndb/tools/restore/consumer_restore.hpp:
  The method is used to judge whether the table structure has been changed when restoring the data.
storage/ndb/tools/restore/restore_main.cpp:
  Add --skip-table-check flag for ndb_restore. Its default value is false, so if the table structure has been changed, the restore will fail. 
  If using it will skip the table schema check.

storage/ndb/tools/restore/consumer.hpp

@@ -41,6 +41,7 @@ public:
   NODE_GROUP_MAP *m_nodegroup_map;
   uint            m_nodegroup_map_len;
   virtual bool has_temp_error() {return false;}
+  virtual bool table_equal(const TableS &) {return true;}
 };
 
 #endif

storage/ndb/tools/restore/consumer_restore.cpp

@@ -666,6 +666,62 @@ err:
   return result;
 }
 
+bool
+BackupRestore::table_equal(const TableS &tableS){
+  const char *tablename = tableS.getTableName();
+
+  if(tableS.m_dictTable == NULL){
+    ndbout<<"Table %s has no m_dictTable " << tablename << endl;
+    return false;
+  }
+  /**
+   * Ignore blob tables
+   */
+  if(match_blob(tablename) >= 0)
+    return true;
+
+  const NdbTableImpl & tmptab = NdbTableImpl::getImpl(* tableS.m_dictTable);
+  if ((int) tmptab.m_indexType != (int) NdbDictionary::Index::Undefined){
+    return true;
+  }
+
+  BaseString tmp(tablename);
+  Vector<BaseString> split;
+  if(tmp.split(split, "/") != 3){
+    err << "Invalid table name format " << tablename << endl;
+    return false;
+  }
+
+  m_ndb->setDatabaseName(split[0].c_str());
+  m_ndb->setSchemaName(split[1].c_str());
+
+  NdbDictionary::Dictionary* dict = m_ndb->getDictionary();  
+  const NdbDictionary::Table* tab = dict->getTable(split[2].c_str());
+  if(tab == 0){
+    err << "Unable to find table: " << split[2].c_str() << endl;
+    return false;
+  }
+
+  if(tab->getNoOfColumns() != tableS.m_dictTable->getNoOfColumns())
+  {
+    ndbout_c("m_columns.size %d != %d",tab->getNoOfColumns(),
+                       tableS.m_dictTable->getNoOfColumns());
+    return false;
+  }
+
+ for(int i = 0; i<tab->getNoOfColumns(); i++)
+  {
+    if(!tab->getColumn(i)->equal(*(tableS.m_dictTable->getColumn(i))))
+    {
+      ndbout_c("m_columns %s != %s",tab->getColumn(i)->getName(),
+                tableS.m_dictTable->getColumn(i)->getName());
+      return false;
+    }
+  }
+
+  return true;
+}
+
 bool
 BackupRestore::createSystable(const TableS & tables){
   const char *tablename = tables.getTableName();

storage/ndb/tools/restore/consumer_restore.hpp

@@ -74,6 +74,7 @@ public:
   virtual bool finalize_table(const TableS &);
   virtual bool has_temp_error();
   virtual bool createSystable(const TableS & table);
+  virtual bool table_equal(const TableS & table);
   virtual bool update_apply_status(const RestoreMetaData &metaData);
   void connectToMysql();
   bool map_in_frm(char *new_data, const char *data,

storage/ndb/tools/restore/restore_main.cpp

@@ -51,6 +51,7 @@ NDB_STD_OPTS_VARS;
 static bool ga_restore_epoch = false;
 static bool ga_restore = false;
 static bool ga_print = false;
+static bool ga_skip_table_check = false;
 static int _print = 0;
 static int _print_meta = 0;
 static int _print_data = 0;
@@ -92,6 +93,9 @@ static struct my_option my_long_options[] =
     NDB_REP_DB "." NDB_APPLY_TABLE " with id 0 will be updated/inserted.", 
     (gptr*) &ga_restore_epoch, (gptr*) &ga_restore_epoch,  0,
     GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 },
+  { "skip-table-check", 's', "Skip table structure check during restore of data",
+   (gptr*) &ga_skip_table_check, (gptr*) &ga_skip_table_check, 0,
+   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 },
   { "parallelism", 'p',
     "No of parallel transactions during restore of data."
     "(parallelism can be 1 to 1024)", 
@@ -460,6 +464,8 @@ main(int argc, char** argv)
   g_options.appfmt(" -n %d", ga_nodeId);
   if (_restore_meta)
     g_options.appfmt(" -m");
+  if (ga_skip_table_check)
+    g_options.appfmt(" -s");
   if (_restore_data)
     g_options.appfmt(" -r");
   if (ga_restore_epoch)
@@ -590,6 +596,20 @@ main(int argc, char** argv)
   {
     if(_restore_data || _print_data)
     {
+      if (!ga_skip_table_check){
+        for(i=0; i < metaData.getNoOfTables(); i++){
+          if (checkSysTable(metaData, i))
+          {
+            for(Uint32 j= 0; j < g_consumers.size(); j++)
+              if (!g_consumers[j]->table_equal(* metaData[i]))
+              {
+                err << "Restore: Failed to restore data, ";
+                err << metaData[i]->getTableName() << " table structure doesn't match backup ... Exiting " << endl;
+                exitHandler(NDBT_FAILED);
+              }
+          }
+        }
+      }
       RestoreDataIterator dataIter(metaData, &free_data_callback);
       
       // Read data file header