linliu-code opened a new pull request, #12979:
URL: https://github.com/apache/hudi/pull/12979
### Change Logs
The root cause:
The requestedSchema does not contain the ordering field such that when we
merge base file record and log file records,
base file cannot find ordering filed from the schema, and
DEFAULT_ORDERING_VALUE (0) is used. However, the ordering value from log file
records are their original data type, like long, or float, so the comparison
fails.
### Impact
Make FG reader more robust.
### Risk level (write none, low medium or high below)
Medium.
### Documentation Update
_Describe any necessary documentation update if there is any new feature,
config, or user-facing change. If not, put "none"._
- _The config description must be updated if new configs are added or the
default value of the configs are changed_
- _Any new feature or user-facing change requires updating the Hudi website.
Please create a Jira ticket, attach the
ticket number here and follow the
[instruction](https://hudi.apache.org/contribute/developer-setup#website) to
make
changes to the website._
### Contributor's checklist
- [ ] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [ ] Change Logs and Impact were stated clearly
- [ ] Adequate tests were added if applicable
- [ ] CI passed
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