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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8879) Alter table on compact storage broken
Date Tue, 03 Mar 2015 04:39:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14344501#comment-14344501
] 

Jonathan Ellis commented on CASSANDRA-8879:
-------------------------------------------

I thought we agreed (long ago, don't remember the ticket) to allow going from blob to X, on
the grounds that lots of thrift users used blob for everything, so we should allow them to
fix that.  (And if it doesn't actually contain X they can ALTER back to blob.)

> Alter table on compact storage broken
> -------------------------------------
>
>                 Key: CASSANDRA-8879
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8879
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Nick Bailey
>            Assignee: Tyler Hobbs
>             Fix For: 2.0.13
>
>         Attachments: 8879-2.0.txt
>
>
> In 2.0 HEAD, alter table on compact storage tables seems to be broken. With the following
table definition, altering the column breaks cqlsh and generates a stack trace in the log.
> {noformat}
> CREATE TABLE settings (
>   key blob,
>   column1 blob,
>   value blob,
>   PRIMARY KEY ((key), column1)
> ) WITH COMPACT STORAGE
> {noformat}
> {noformat}
> cqlsh:OpsCenter> alter table settings ALTER column1 TYPE ascii ;
> TSocket read 0 bytes
> cqlsh:OpsCenter> DESC TABLE settings;
> {noformat}
> {noformat}
> ERROR [Thrift:7] 2015-02-26 17:20:24,640 CassandraDaemon.java (line 199) Exception in
thread Thread[Thrift:7,5,main]
> java.lang.AssertionError
> >...at org.apache.cassandra.cql3.statements.AlterTableStatement.announceMigration(AlterTableStatement.java:198)
> >...at org.apache.cassandra.cql3.statements.SchemaAlteringStatement.execute(SchemaAlteringStatement.java:79)
> >...at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:158)
> >...at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:175)
> >...at org.apache.cassandra.thrift.CassandraServer.execute_cql3_query(CassandraServer.java:1958)
> >...at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4486)
> >...at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4470)
> >...at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
> >...at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
> >...at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:204)
> >...at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >...at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >...at java.lang.Thread.run(Thread.java:724)
> {noformat}



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