Shardingsphere: Error message if circuit break mode has unnecessary test.

[terrymanu]

When execute sql in circuit break mode, it display:

ERROR 10000 (C1000): 0Circuit break mode is ON.

In word 0Circuit, 0 is unnecessary, please remove it.

[cenyu00]

please assige me.

[dbhat6]

@cenyu00 are you still working on this?
Can I take it up if not?

[terrymanu]

Hi @dbhat6
Please go ahead

[dbhat6]

@terrymanu I won't be able to take this up

[totalo]

Hi , plz assige me,I want to have a try,thx

[totalo]

Hello i want to know how to open circuit break mode， @terrymanu @strongduanmu

[totalo]

Hello i want to know how to open circuit break mode， @terrymanu @strongduanmu

ohhh, I know， thx

[totalo]

I found that the sqlState length defined by mysql error packet is 5, but we defined it as6. This will happen to all errorMsgs. I would like to modify our defined length to5. Take a look. If this design is unreasonable, I will Try another method.

[terrymanu]

@totalo Thank you, the change is excellent, I will do a little research and merge it soon

[tuohai666]

LGTM. Please check one comment I left, then the PR can be merged.