fengjian428 opened a new pull request, #5797:
URL: https://github.com/apache/hudi/pull/5797

   ## *Tips*
   - *Thank you very much for contributing to Apache Hudi.*
   - *Please review https://hudi.apache.org/contribute/how-to-contribute before 
opening a pull request.*
   
   ## What is the purpose of the pull request
   
   In our production environment, since many table's id is auto-increment, if 
using Hbase index, will cause a data skew issue in HBase regions. it is better 
to find a way to add random prefixes and also keep ordering in hudi itself.
   
   we may have a small modification to the HBase index. add the prefix on the 
aspect of query and update HBase. In
   this way, the pk in HBase will be different from the one in hudi but such
   logic will be transparent to business logic. I have adopted this method in
   prod environment. Using withIndexClass config in IndexConfig could specify
   the custom index 
   
   
   
   
   Another work, driven by uber engineers 
https://github.com/apache/hudi/pull/3508 could
   technically solve the issue by directly reading HFiles, but still in 
progress, this approach should resolve this issue immediately
   ## Brief change log
   
   *(for example:)*
     - *Modify AnnotationLocation checkstyle rule in checkstyle.xml*
   
   ## 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.
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]

Reply via email to