pan3793 opened a new pull request, #4145:
URL: https://github.com/apache/kyuubi/pull/4145
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### _Why are the changes needed?_
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This PR proposes to change distributed lock path and seq_num(used for
POLLING engine pool select policy) on the Service Discovery component. The
reason is that namespace
`${serverSpace}_${KYUUBI_VERSION}_${shareLevel}_${engineType}/` should be
dedicated to engine registration, we'd better use the separated namespace for
other functionalities.
- lock path
```
# before
${serverSpace}_${shareLevel}_${engineType}/lock/${user}/${subdomain}
# after
${serverSpace}_${KYUUBI_VERSION}_${shareLevel}_${engineType}_lock/${user}/${subdomain}
```
- seq_num
```
# before
${serverSpace}_${KYUUBI_VERSION}_${shareLevel}_${engineType}/seq_num/${user}/${poolName}
# after
${serverSpace}_${KYUUBI_VERSION}_${shareLevel}_${engineType}_seq_num/${user}/${poolName}
```
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including
negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [x] [Run
test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests)
locally before make a pull request
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