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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2019/12/29 04:57:52 UTC
[GitHub] [incubator-doris] kangpinghuang opened a new issue #2610: linked
schema change failed if the tablet has both alpha and beta rowet
kangpinghuang opened a new issue #2610: linked schema change failed if the tablet has both alpha and beta rowet
URL: https://github.com/apache/incubator-doris/issues/2610
**Describe the bug**
to reproduce like this:
3 BEs, two default alpha rowset(A, B), one beta rowset(C)
In A, for one tablet, it has both alpha and beta rowset, when it do linked schema change, it will fail because AlphaRowset.add_rowset add a BetaRowset, which will lead to npt error because BetaRowset's segment group is null.
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[GitHub] [incubator-doris] morningman closed issue #2610: linked schema
change failed if the tablet has both alpha and beta rowet
Posted by GitBox <gi...@apache.org>.
morningman closed issue #2610: linked schema change failed if the tablet has both alpha and beta rowet
URL: https://github.com/apache/incubator-doris/issues/2610
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[GitHub] [incubator-doris] kangpinghuang commented on issue #2610: linked
schema change failed if the tablet has both alpha and beta rowet
Posted by GitBox <gi...@apache.org>.
kangpinghuang commented on issue #2610: linked schema change failed if the tablet has both alpha and beta rowet
URL: https://github.com/apache/incubator-doris/issues/2610#issuecomment-569594827
The bug is that schema change use the default rowset type to create the output rowset, but if the default rowset type is Alpha, the source rowset type is beta, and if the schema change is linked schema change, it will fail to add beta rowset into alpha rowset because of incompatible rowset meta.
what is more, the original reason to use default rowset type as output rowset type is to use schema change to convert rowset type. But now it failed when the schema change is linked schema change, so the normal schema change will keep the rowset type and the special schema change of modify storage format will directly convert the rowset from alpha to beta for some use cases.
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