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https://issues.apache.org/jira/browse/CASSANDRA-15899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Tunnicliffe updated CASSANDRA-15899:
----------------------------------------
    Reviewers: Sam Tunnicliffe, Sam Tunnicliffe  (was: Sam Tunnicliffe)
               Sam Tunnicliffe, Sam Tunnicliffe  (was: Sam Tunnicliffe)
       Status: Review In Progress  (was: Patch Available)

> Dropping a column can break queries until the schema is fully propagated
> ------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15899
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15899
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Cluster/Schema
>            Reporter: Marcus Eriksson
>            Assignee: Blake Eggleston
>            Priority: Normal
>             Fix For: 3.0.x
>
>
> With a table like:
> {code}
> CREATE TABLE ks.tbl (id int primary key, v1 int, v2 int, v3 int)
> {code}
> and we drop {{v2}}, we get this exception on the replicas which haven't seen 
> the schema change:
> {code}
> ERROR [SharedPool-Worker-1] node2 2020-06-24 09:49:08,107 
> AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
> Thread[SharedPool-Worker-1,5,node2]
> java.lang.IllegalStateException: [ColumnDefinition{name=v1, 
> type=org.apache.cassandra.db.marshal.Int32Type, kind=REGULAR, position=-1}, 
> ColumnDefinition{name=v2, type=org.apache.cassandra.db.marshal.Int32Type, 
> kind=REGULAR, position=-1}, ColumnDefinition{name=v3, 
> type=org.apache.cassandra.db.marshal.Int32Type, kind=REGULAR, position=-1}] 
> is not a subset of [v1 v3]
>       at 
> org.apache.cassandra.db.Columns$Serializer.encodeBitmap(Columns.java:546) 
> ~[main/:na]
>       at 
> org.apache.cassandra.db.Columns$Serializer.serializeSubset(Columns.java:478) 
> ~[main/:na]
>       at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:184)
>  ~[main/:na]
>       at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:114)
>  ~[main/:na]
>       at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:102)
>  ~[main/:na]
>       at 
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:132)
>  ~[main/:na]
>       at 
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:87)
>  ~[main/:na]
> ...
> {code}
> Note that it doesn't matter if we {{SELECT *}} or {{SELECT id, v1}}



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