uncleGen opened a new pull request #3630:
URL: https://github.com/apache/hudi/pull/3630
## What is the purpose of the pull request
This is a follow-ups for PR #972. NPE will be thrown when we use 'select
count(*)' or 'select count(1)' from a realtime table. As commented, this is a
Hive bug (HIVE-22438), but we should resolve it as many users are using Hive
less than version 3.0.0. Unfortunately, #972 dose not completely walk around
this bug. In #972, we correct `hive.io.file.readcolumn.ids` with a right
string, i.e. '2,0,1', but this config will be reset with a wrong ',2,0,1'
(ref: HIVE-22438). Then this wrong config will be used to create RecordReader,
and NPE thrown.
## Brief change log
*(for example:)*
- *Modify AnnotationLocation checkstyle rule in checkstyle.xml*
## Verify this pull request
This pull request is a trivial rework
## 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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