[jira] [Created] (CASSANDRA-15899) Dropping a column can break queries until the schema is fully propagated

["Marcus Eriksson (Jira)" <ji...@apache.org>]

Marcus Eriksson created CASSANDRA-15899:
-------------------------------------------

             Summary: 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
            Reporter: Marcus Eriksson
            Assignee: Marcus Eriksson


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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