xinbinhuang commented on a change in pull request #15194:
URL: https://github.com/apache/airflow/pull/15194#discussion_r611234529
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File path: airflow/models/variable.py
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@@ -47,12 +47,14 @@ class Variable(Base, LoggingMixin):
id = Column(Integer, primary_key=True)
key = Column(String(ID_LEN), unique=True)
_val = Column('val', Text)
+ description = Column(Text(5000))
Review comment:
Hmm, this is because there are other migration changes merged to the
master before you, which happens sometimes given the number of PRs we have. We
used to have problems with multiple diverge alembic heads, and we mitigate it
by making sure that any PR affecting the `migration` folder will need to rebase
on the latest master. So, to fix it, I normally delete the revision file and
regenerate it after rebase to `master`
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