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https://issues.apache.org/jira/browse/CASSANDRA-9821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Yeschenko deleted CASSANDRA-9821:
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> ALTER TABLE ADD validation is overly strict for re-added collection columns
> ---------------------------------------------------------------------------
>
> Key: CASSANDRA-9821
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9821
> Project: Cassandra
> Issue Type: Bug
> Reporter: Aleksey Yeschenko
> Assignee: Aleksey Yeschenko
> Priority: Minor
>
> {{AlterTableStatement}} ensures that we cannot re-add a collection column of
> a type that is incompatible with a previously existing, dropped one.
> It doesn't make an exception, however, for {{frozen}} collections, yet those
> should be allowed.
> Code in question:
> {code}
> if (dropped != null && (dropped.type == null || (dropped.type instanceof
> CollectionType && !type.isCompatibleWith(dropped.type))))
> throw new InvalidRequestException(String.format("Cannot add a collection
> with the name %s " +
> "because a collection with the same name and a different
> type%s has already been used in the past",
> columnName, dropped.type == null ? "" : " (" +
> dropped.type.asCQL3Type() + ")"));
> {code}
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