hbgstc123 opened a new pull request, #11722:
URL: https://github.com/apache/hudi/pull/11722
support projection push down for lookup join and fix lookup join test.
If the dim table have 100 fields, and we only use 3 fields of them, then we
should only keep 3 fields in the cache.
### Change Logs
1. Modify `HoodieTableSource`, when constructing `HoodieLookupFunction`,
pass in query required schema, instead of the dim table schema.
2. Fix lookup join test in `ITTestHoodieDataSource`. It will pass no matter
what before, because source table and target table share same path.
### Impact
None
### Risk level (write none, low medium or high below)
low
### 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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