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Posted to commits@cassandra.apache.org by "Benjamin Lerer (Jira)" <ji...@apache.org> on 2020/12/10 09:03:00 UTC

[jira] [Commented] (CASSANDRA-16320) Cassandra fails to start after schema changed

    [ https://issues.apache.org/jira/browse/CASSANDRA-16320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17247102#comment-17247102 ] 

Benjamin Lerer commented on CASSANDRA-16320:
--------------------------------------------

Did you run what the queries that error message suggest:
{code}
DELETE FROM system_schema.tables WHERE keyspace_name = 'my_keyspace' AND table_name = 'my_materialized_view'; 
DELETE FROM system_schema.columns WHERE keyspace_name = 'my_keyspace' AND table_name = 'my_materialized_view';"
{code}

> Cassandra fails to start after schema changed
> ---------------------------------------------
>
>                 Key: CASSANDRA-16320
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16320
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Yazal Ulloa
>            Priority: Normal
>
> I'm using Cassandra 3.11.6 on Centos 7 with a 3 node cluster, I ran some schema changes, drop tables/materialized views, alter tables, etc, after that one of the materialized views was failing with this error: 
>  org.apache.cassandra.schema.SchemaKeyspace$MissingColumns: No partition key columns found in schema table for my_keyspace.my_materialized_view.
>  
> I wanted to replace that materialized view with a table, with the same name though, that might be why it's failing
>  
> I ran nodetool describecluster and found the schema version was different, I tried to run a repair, it didn't work, I restarted the nodes, but they didn't start.
> This is the error that is showing up in cassandra.log
>  
> ERROR [main] 2020-12-09 10:13:15,827 SchemaKeyspace.java:1017 - No partition columns found for table my_keyspace.my_materialized_view in system_schema.columns. This may be due to corruption or concurrent dropping and altering of a table. If this table is supposed to be dropped, run the following query to cleanup: "DELETE FROM system_schema.tables WHERE keyspace_name = 'my_keyspace' AND table_name = 'my_materialized_view'; DELETE FROM system_schema.columns WHERE keyspace_name = 'my_keyspace' AND table_name = 'my_materialized_view';" If the table is not supposed to be dropped, restore system_schema.columns sstables from backups.
>  org.apache.cassandra.schema.SchemaKeyspace$MissingColumns: No partition key columns found in schema table for my_keyspace.my_materialized_view
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchColumns(SchemaKeyspace.java:1106) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchTable(SchemaKeyspace.java:1046) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchTables(SchemaKeyspace.java:1000) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:959) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:936) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:924) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.config.Schema.loadFromDisk(Schema.java:92) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.config.Schema.loadFromDisk(Schema.java:82) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:269) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:630) [apache-cassandra-3.11.6.jar:3.11.6]
>  at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:757) [apache-cassandra-3.11.6.jar:3.11.6]
>  
> I tried starting Cassandra with -Dcassandra.ignore_corrupted_schema_tables=true and it doesn't work.
>  
> Is there a way to fix this?
>  



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