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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2021/12/08 03:01:36 UTC

[GitHub] [incubator-doris] tinkerrrr opened a new issue #7344: [Bug] 0.14 FE can't read 0.15 FE's metadata

tinkerrrr opened a new issue #7344:
URL: https://github.com/apache/incubator-doris/issues/7344


   ### Search before asking
   
   - [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues.
   
   
   ### Version
   
   0.14.0 and 0.15.0
   
   ### What's Wrong?
   
   I was going to upgrade Doris from 0.14.0 to 0.15.0, it performs well during the upgrade process. But a complete upgrade plan of production environment should contain degradation plan. When degrade from 0.15 to 0.14, FE crash with excetion: 
   
   ```
   java.io.EOFException
       at java.io.DataInputStream.readFully(DataInputStream.java:197)
       at org.apache.doris.common.io.Text.readString(Text.java:415)
       at org.apache.doris.catalog.Catalog.loadMasterInfo(Catalog.java:1580)
       at org.apache.doris.catalog.Catalog.loadImage(Catalog.java:1479)
       at org.apache.doris.catalog.Catalog.initialize(Catalog.java:760)
       at org.apache.doris.PaloFe.start(PaloFe.java:108)
       at org.apache.doris.PaloFe.main(PaloFe.java:60)
   ```
   
   This could reduce the confidence of upgrading
   
   ### What You Expected?
   
   Guarantee compatibility between FE 0.14 and FE 0.15
   
   ### How to Reproduce?
   
   upgrade from 0.14 to 0.15 and then degrade from 0.15 to 0.14
   
   ### Anything Else?
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
   


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[GitHub] [incubator-doris] morningman commented on issue #7344: [Bug] 0.14 FE can't read 0.15 FE's metadata

Posted by GitBox <gi...@apache.org>.
morningman commented on issue #7344:
URL: https://github.com/apache/incubator-doris/issues/7344#issuecomment-988453559


   Doris just guarantee backward compatibility, not forward.


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[GitHub] [incubator-doris] tinkerrrr commented on issue #7344: [Bug] 0.14 FE can't read 0.15 FE's metadata

Posted by GitBox <gi...@apache.org>.
tinkerrrr commented on issue #7344:
URL: https://github.com/apache/incubator-doris/issues/7344#issuecomment-988455670


   > Doris just guarantee backward compatibility, not forward.
   
   Do we have any insurance policy to keep data safe in case of upgrade failure? I think it is worth considering


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[GitHub] [incubator-doris] tinkerrrr edited a comment on issue #7344: [Bug] 0.14 FE can't read 0.15 FE's metadata

Posted by GitBox <gi...@apache.org>.
tinkerrrr edited a comment on issue #7344:
URL: https://github.com/apache/incubator-doris/issues/7344#issuecomment-988455670


   > Doris just guarantee backward compatibility, not forward.
   
   Do we have any insurance policy to keep data safe in case of upgrade failure? I think it is worth considering. Or we should write this into document to remind our users


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