Get wrong value when put a big integer number

[wangsq]

Describe your problem

When I put a big int number into vineyard, but get just 1 when the value is great than 2**63.

---

1. Get Right Value

value = 2**63-1
oid = client.put(value)

result = client.get(oid)
print(f'{value=}, {result=}, {value == int(result)}')

output:

value=9223372036854775807, result=9223372036854775807, True

2. Get Wrong Value When Big Integer

value = 2**63
oid = client.put(value)

result = client.get(oid)
print(f'{value=}, {result=}, {value == int(result)}')

output
value=9223372036854775808, result=1, False

3. Use float cast , get right value

value = 2**126
oid = client.put(float(value))

result = client.get(oid)
print(f'{value=}, {int(result)=}, {value == int(result)}')

output
value=85070591730234615865843651857942052864, int(result)=85070591730234615865843651857942052864, True

4. Use float cast , get wrong value, big float

value = 2**126+1
oid = client.put(float(value))

result = client.get(oid)
print(f'{value=}, {int(result)=}, {value == int(result)}')

output:
value=85070591730234615865843651857942052865, int(result)=85070591730234615865843651857942052864, False

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If is is a bug report, to help us reproducing this bug, please provide information below:

1. Your Operation System version (uname -a): Linux 6.8.0-45-generic Fixes bugs in launcher when multiple host and multiple workers involved. #45-Ubuntu SMP PREEMPT_DYNAMIC Fri Aug fd 11 Dumping 301618 Realtime Data. │ 30 12:02:04 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

2. The version of vineyard you use (vineyard.__version__): '0.24.2'

3. Versions of crucial packages, such as gcc, numpy, pandas, etc.:

4. Full stack of the error (if there are a crash):

5. Minimized code to reproduce the error:

---

If it is a feature request, please provides a clear and concise description of what you want to happen:

What is the problem:

The behaviour that you expect to work:

Additional context

Add any other context about the problem here.

[dashanji]

@wangsq Thanks for reporting this issue, we'll check it as soon as possible.

[github-actions]

/cc @sighingnow, this issus/pr has had no activity for a long time, please help to review the status and assign people to work on it.

[dashanji]

@wangsq, this issue may be caused by data type conversion between Python and C++. In Python, when pass the 2**63 to a template function in C++, it may be incorrectly interpreted as a Boolean value by the compiler and converted to 1 as you seen.

Could you please tell me what scenario you need to put a large interger number? Is it possible to use the string to workaround?

[wangsq]

@wangsq, this issue may be caused by data type conversion between Python and C++. In Python, when pass the 2**63 to a template function in C++, it may be incorrectly interpreted as a Boolean value by the compiler and converted to 1 as you seen.

Could you please tell me what scenario you need to put a large interger number? Is it possible to use the string to workaround?

I want to store Memory Address as integer in v6d. It is always like a big int.

Now I put the value by casting to numpy unsigned integer . It works.

Thanks.