// 设置Timeout参数connection.setNetworkTimeout(null,timeout); 1. 2. 在上面的代码中,timeout代表你想设置的超时时间(单位为毫秒)。 步骤3: 完成数据入库操作 最后,我们可以执行数据入库操作,将数据写入ClickHouse数据库中。 // 完成数据入库操作Stringquery="INSERT INTO table_name (column1, column2) VALUE...
# 设置MySQL读取超时query='SET mysql_read_timeout = 10000;'--设置读取超时时间为10秒 cursor=connection.cursor()cursor.execute(query) 1. 2. 3. 4. 5. 测试MySQL读取超时 现在,我们可以尝试读取MySQL数据,并测试读取超时功能是否生效。以下是一个示例代码,用于从MySQL中读取数据: #从MySQL中读取数据query=...
Cancelling query. Ok. Query was cancelled.0rowsinset. Elapsed:0.137sec. Processed158.84thousand rows,81.89MB (1.16million rows/s.,596.64MB/s.) 对于查询SQL快的可能成功,也可能失败,如: dev-app77 :)select*fromsystem.settingswherename='receive_timeout';SELECT*FROMsystem.settingsWHEREname='receive_ti...
DB::Exception: Watching task /clickhouse/task_queue/ddl/query-0000000002 is executing longer than distributed_ddl_task_timeout (=180) seconds. There are 2 unfinished hosts (0 of them are currently active), they are going to execute the query in background. 0 rows in set. Elapsed: 180.685...
close() })() function longRunningQuery(client) { return client.query({ query: `SELECT sleep(3), rand64();`, format: 'JSONEachRow', }) } function sleep(ms) { return new Promise((resolve) => { setTimeout(resolve, ms); }); } I suppose it is similar to the use case described ...
47. max_query_size:可以带到RAM以便与SQL解析器一起解析的查询的最大部分,默认256K。 48. Interactive_delay:检查请求执行是否已取消并发送进度的时间间隔,以微秒为单位。默认值:100000(检查取消并每秒发送10次进度)。 49. connect_timeout,receive_timeout,send_timeout:用于与客户端通信的套接字上的超时(以...
setglobalonclusterdefaultmax_execution_time=3600; 如何处理socket_timeout超时问题 HTTP协议在监听socket返回结果时的等待时间,DMS平台上默认设置是7200s,jdbc driver、DataGrip上默认是30s。该参数不是Clickhouse系统内的参数,它属于jdbc在HTTP协议上的参数,但它是会影响到前面的max_execution_time参数设置效果,因为它...
setglobalonclusterdefaultmax_execution_time=3600; 如何处理socket_timeout超时问题 HTTP协议在监听socket返回结果时的等待时间,DMS平台上默认设置是7200s,jdbc driver、DataGrip上默认是30s。该参数不是Clickhouse系统内的参数,它属于jdbc在HTTP协议上的参数,但它是会影响到前面的max_execution_time参数设置效果,因为它...
ClickHouse server version 19.4.1.1 Whenever set receive_timeout is used (e.g. set receive_timeout=6000), the change is reflected in system.settings: SELECT * FROM system.settings WHERE name IN ('max_execution_time', 'receive_timeout') ┌─...
.setDBUrl(url) .setUsername(user) .setPassword(passwd) .setQuery(insertIntoCkSql) .setBatchSize(batchsize) .setParameterTypes(Types.LONG, Types.LONG,Types.LONG, Types.STRING,Types.INT,Types.LONG) .build(); String[] arr = {"user_id","item_id","cat_id","action","province","ts"};...