codope opened a new pull request, #5954:
URL: https://github.com/apache/hudi/pull/5954
## What is the purpose of the pull request
When we define a table in Hive with a partitioning column, all NULL values
within that column appear as `__HIVE_DEFAULT_PARTITION__`. It is the sentinel
value which is understood by both Hive and Spark. Previously we used `default`
string as the default partition value. That would result in casting errors as
mentioned in HUDI-4303 or HUDI-4159. This PR fixes that behavior.
## Brief change log
*(for example:)*
- Change default partition value to `__HIVE_DEFAULT_PARTITION__`.
- Fix tests.
## Verify this pull request
*(Please pick either of the following options)*
This pull request is a trivial rework / code cleanup without any test
coverage.
*(or)*
This pull request is already covered by existing tests, such as *(please
describe tests)*.
(or)
This change added tests and can be verified as follows:
*(example:)*
- *Added integration tests for end-to-end.*
- *Added HoodieClientWriteTest to verify the change.*
- *Manually verified the change by running a job locally.*
## Committer checklist
- [ ] Has a corresponding JIRA in PR title & commit
- [ ] Commit message is descriptive of the change
- [ ] CI is green
- [ ] Necessary doc changes done or have another open PR
- [ ] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
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