[jira] [Commented] (CASSANDRA-11820) Altering a column's type causes EOF

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-11820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15287603#comment-15287603 ] 

Tyler Hobbs commented on CASSANDRA-11820:
-----------------------------------------

I bet the problem is that we no longer store a length prefix for fixed-length types, so after converting to a blob, we try to read a non-length value as the length.

I suppose we'll need to disallow converting fixed-length types to blobs.

> Altering a column's type causes EOF
> -----------------------------------
>
>                 Key: CASSANDRA-11820
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11820
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Carl Yeksigian
>             Fix For: 3.0.x, 3.x
>
>
> While working on CASSANDRA-10309, I was testing altering columns' types. This series of operations fails:
> {code}
> CREATE TABLE test (a int PRIMARY KEY, b int)
> INSERT INTO test (a, b) VALUES (1, 1)
> ALTER TABLE test ALTER b TYPE BLOB
> SELECT * FROM test WHERE a = 1
> {code}
> Tried this on 3.0 and trunk, both fail.



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