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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/11/13 08:13:46 UTC
[GitHub] [incubator-doris] wangbo opened a new issue #4896: [Discussion] A rollback way for Doris FE when doing major version upgrade
wangbo opened a new issue #4896:
URL: https://github.com/apache/incubator-doris/issues/4896
**Background**
Doris's current FE metadata design doesn't support rollback after finishing doing major version upgrade.
If we rollback code and metadata to a specific version, Doris may lose data.
So I came up with a way to make FE support rollback metadata.
** Solution **
The main idea is ```Write both new version and old version metadata to image file when doing checkpoint.```
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[GitHub] [incubator-doris] wangbo closed issue #4896: [Discussion] A rollback way for Doris FE when doing major version upgrade
Posted by GitBox <gi...@apache.org>.
wangbo closed issue #4896:
URL: https://github.com/apache/incubator-doris/issues/4896
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[GitHub] [incubator-doris] kangkaisen commented on issue #4896: [Discussion] A rollback way for Doris FE when doing major version upgrade
Posted by GitBox <gi...@apache.org>.
kangkaisen commented on issue #4896:
URL: https://github.com/apache/incubator-doris/issues/4896#issuecomment-735029566
Good idea, I think this solution could work.
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[GitHub] [incubator-doris] hf200012 commented on issue #4896: [Discussion] A rollback way for Doris FE when doing major version upgrade
Posted by GitBox <gi...@apache.org>.
hf200012 commented on issue #4896:
URL: https://github.com/apache/incubator-doris/issues/4896#issuecomment-892456609
This is great. It solves the problem that the system cannot be rolled back due to the bug in the version during the upgrade process, which causes the system to be unstable.
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