Phoenix安装批次提交插入更新语句

1 贴一下官方的代码

https://phoenix.apache.org/tuning_guide.html

try (Connection conn = DriverManager.getConnection(url)) {
  conn.setAutoCommit(false);
  int batchSize = 0;
  int commitSize = 1000; // number of rows you want to commit per batch.  
  try (Statement stmt = conn.prepareStatement(upsert)) {
    stmt.set ... while (there are records to upsert) {
      stmt.executeUpdate(); 
      batchSize++; 
      if (batchSize % commitSize == 0) { 
        conn.commit(); 
      } 
   } 
 conn.commit(); // commit the last batch of records 
 }

  

2 解读代码

  之前是没1000条,提交一次,但是不足1000的,会在循环结束后的代码的最后一次commit()中被提交,所以也不会丢失提交代码。

原文地址:https://www.cnblogs.com/QuestionsZhang/p/11606382.html