--mempool-max-rows-num option

clickhouse-mysql

@@ -45,6 +45,7 @@ class Main(Daemon):
         elif self.config.is_table_migrate():
             migrator = self.config.table_migrator()
             migrator.chwriter = self.config.writer()
+            migrator.pool_max_rows_num = self.config.mempool_max_rows_num()
             migrator.migrate()
 
         else:

src/cliopts.py

@@ -124,6 +124,12 @@ def config():
             default=100000,
             help='Max events number to pool - triggering pool flush'
         )
+        argparser.add_argument(
+            '--mempool-max-rows-num',
+            type=int,
+            default=100000,
+            help='Max rows number to pool - triggering pool flush'
+        )
         argparser.add_argument(
             '--mempool-max-flush-interval',
             type=int,
@@ -290,6 +296,7 @@ def config():
                 'pid_file': args.pid_file,
                 'mempool': args.mempool or args.csvpool, # csvpool assumes mempool to be enabled
                 'mempool-max-events-num': args.mempool_max_events_num,
+                'mempool-max-rows-num': args.mempool_max_rows_num,
                 'mempool-max-flush-interval': args.mempool_max_flush_interval,
                 'csvpool': args.csvpool,
             },

src/config.py

@@ -41,6 +41,12 @@ def nice_pause(self):
     def pid_file(self):
         return self.config['app-config']['pid_file']
 
+    def mempool_max_events_num(self):
+        return self.config['app-config']['mempool-max-events-num']
+
+    def mempool_max_rows_num(self):
+        return self.config['app-config']['mempool-max-rows-num']
+
     def is_daemon(self):
         return self.config['app-config']['daemon']
 

src/tablemigrator.py

@@ -11,6 +11,7 @@ class TableMigrator(TableProcessor):
 
     cursorclass = SSDictCursor
     chwriter = None
+    pool_max_rows_num = 100000
 
     def migrate(self):
         dbs = self.dbs_tables_lists()
@@ -27,7 +28,7 @@ def migrate_table(self, db=None, table=None, ):
         self.cursor.execute("SELECT * FROM {0}".format(self.create_full_table_name(db=db, table=table)))
         cnt = 0;
         while True:
-            rows = self.cursor.fetchmany(10000)
+            rows = self.cursor.fetchmany(self.pool_max_rows_num)
             if not rows:
                 break
             self.chwriter.dst_schema = db