错误

localhost :) insert into `test`.`test_memory`  select * mysql('192.168.100.101:3306','test',"test_memory','root','<密码>');                                                  

Received exception from server (version 21.11.3):
Code: 241. DB::Exception: Received from localhost:9000. DB::Exception: Memory limit (total) exceeded: would use 2.46 GiB (attempt to allocate chunk of 6291456 bytes), maximum: 2.46 GiB. (MEMORY_LIMIT_EXCEEDED)

  

 

  
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解决方案

max_memory_usage

max

Received exception from server (version 21.11.4):
Code: 252. DB::Exception: Received from localhost:9000. DB::Exception: Too many partitions for single INSERT block (more than 100). The limit is controlled by 'max_partitions_per_insert_block' setting. Large number of partitions is a common misconception. It will lead to severe negative performance impact, including slow server startup, slow INSERT queries and slow SELECT queries. Recommended total number of partitions for a table is under 1000..10000. Please note, that partitioning is not intended to speed up SELECT queries (ORDER BY key is sufficient to make range queries fast). Partitions are intended for data manipulation (DROP PARTITION, etc).. (TOO_MANY_PARTS)

  

 

  
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注意点

system库里面的表都是普通表，直接set只会在当前server生效

文章来源: blog.csdn.net，作者：福州-司马懿，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/chy555chy/article/details/121635131