[Bug]: CN lost connection

[fengttt]

Is there an existing issue for the same bug?

• I have checked the existing issues.

Environment

- Version or commit-id (e.g. v0.1.0 or 8b23a93):
- Hardware parameters:
- OS type:
- Others:

Actual Behavior

Running same test in #9646, but with a better machine (32G to 64G memory), you will see cn lost connection.

ERROR 20503 (HY000) at line 40: stream closed

Expected Behavior

No response

Steps to Reproduce

No response

Additional information

No response

[volgariver6]

in local test:

create database if not exists db1;

use db1

drop table if exists t;

create table t (i int, j int);

insert into t values (1, 1), (2, 2), (3, 3), (4, 4), (5, null), (null, 5);

insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
select count(*) from t;

insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
select count(*) from t;

insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
select count(*) from t;

insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
select count(*) from t;

insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
select count(*) from t;

delete from t where i = 1;
delete from t where i = 2;
select count(*) from t;

insert into t select * from t;
select count(*) from t;

above script will result in:
2023/05/24 12:21:17.672100 +0800 ERROR logservicedriver/appender.go:70 append failed: internal error: message body 116720140 is too large, max is 104857600

[volgariver6]

dup with #9447

[volgariver6]

该问题的分析见#9447 (comment)

后续由 @triump2020 再做一些优化。

[volgariver6]

ERROR 20503 (HY000) at line 40: stream closed

出现该错误或者其他的连接关闭的错误的原因是，rpc框架中的gc任务会检查每个连接的活跃状态，当超过一定时间（默认1分钟）没有数据时，就会关闭这个连接。

delete语句的commit时间长，导致其连接被gc给close了，所以执行失败，需要优化。

[triump2020]

depends on #9996

[XuPeng-SH]

@jiangxinmeng1 delete related issue

[XuPeng-SH]

#10418 cannot fix this issue. This depends on relatively significant refactoring.

[jiangxinmeng1]

还没有进展

[triump2020]

depends on V1.1

[triump2020]

depends on V1.1

[XuPeng-SH]

it depends on #11805 #11804

[XuPeng-SH]

depends on #11471

[jiangxinmeng1]

depends on #11805 #11804

[XuPeng-SH]

fixed