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Posted to commits@cassandra.apache.org by "Marcus Eriksson (Jira)" <ji...@apache.org> on 2020/06/24 07:58:00 UTC
[jira] [Updated] (CASSANDRA-15899) Dropping a column can break
queries until the schema is fully propagated
[ https://issues.apache.org/jira/browse/CASSANDRA-15899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marcus Eriksson updated CASSANDRA-15899:
----------------------------------------
Bug Category: Parent values: Correctness(12982)Level 1 values: Transient Incorrect Response(12987)
Complexity: Normal
Component/s: Cluster/Schema
Discovered By: Unit Test
Fix Version/s: 3.0.x
Severity: Normal
Status: Open (was: Triage Needed)
repro dtest: https://github.com/krummas/cassandra/commits/marcuse/15899
This is probably caused by {{isFetchAll}} vs {{fetchedColumns()}} in {{ColumnFilter}} as they will mismatch if there is a disagreement on which columns exist
> 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: Marcus Eriksson
> 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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