ding-young opened a new issue, #8230: URL: https://github.com/apache/arrow-rs/issues/8230
**Describe the bug** <!-- A clear and concise description of what the bug is. --> It is found (in https://github.com/apache/datafusion/pull/17029) that `get_sliced_memory_size` underestimated the memory size for `StringViewArray`. The diff was quite large i.e. when correct batch size was `1392730` bytes, it returned only `163840` bytes. This is because payload buffers are not taken account of although these payload buffers are simply `cloned()` when we `slice()` `StringViewArray` See https://github.com/apache/arrow-rs/blob/a620957bc98b7aa14faec10635bb798932f00bf9/arrow-data/src/data.rs#L464-L476 https://github.com/apache/arrow-rs/blob/a620957bc98b7aa14faec10635bb798932f00bf9/arrow-data/src/data.rs#L1743-L1752 **To Reproduce** <!-- Steps to reproduce the behavior: --> **Expected behavior** <!-- A clear and concise description of what you expected to happen. --> `get_sliced_memory_size` should include the capacity for payload buffers. If this fix isn’t ideal, we should at least document which buffers are being counted in the calculation. **Additional context** <!-- Add any other context about the problem here. --> https://github.com/apache/datafusion/pull/17315 here's related pr for temporal fix in datafusion -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
