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Bootstrap failed because of an invalid default value to the corresponding type #3157
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@JaySon-Huang PTAL |
https://asktug.com/t/topic/182849/11 tiflash log files |
Minimal reproduce steps:
And tidb store "0.00" as the default value of "origin_default" in column "i"
TiFlash store "0.00" as a |
Modifying the default value of the column "i" from "0.00" to "0" does not help recover from this error. It only changes the "default_value" in ColumnInfo, but does not change the "origin_default_value". In order to workaround this error, user can
|
BTW, If we do the same add column in MySQL 5.7, it will store "0" as the default value for int column instead of "0.00"
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It can be solved by delete and re-create table with correct default value. |
QA and PR think it's a bug. TiF;ash should support such case. @JaySon-Huang Do you have any idea ? |
It is necessary to further investigate how the DDL behaves in the case of some illegal inputs. |
Agree. There is no need for TiDB to support all ridiculous behaviours. |
@JaySon-Huang maybe we should resolve "0.0" as "0" in tidb just like mysql rather than pass "0.0" to tiflash and handle it in tiflash? |
This is one of the solutions. But it does not resolve the problem totally. Consider that the user created a table with that invalid default value in the old version(5.4 for example), and we fix that in a newer version (TiDB 6.2 for example). After user upgraded from 5.4 to 6.2 and deploy TiFlash node, they still meet this error. |
case TypeInt24:
{
try {
return value.convert<Int64>();
} catch (...) {
return static_cast<Int64>(std::stoull(value.convert<String>()));
}
}
@JaySon-Huang Do you think it is acceptable? or any suggestions? |
@Lloyd-Pottiger LGTM |
TiFlash build info: TiFlash\nRelease Version: v5.1.1\nEdition: Community\nGit Commit Hash: c8fabfb\nGit Branch: heads/refs/tags/v5.1.1\nUTC Build Time: 2021-07-28 11:18:00\nProfile: RELWITHDEBINFO
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