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From "Dave Brosius (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-6136) CQL should not allow an empty string as column identifier
Date Thu, 03 Oct 2013 02:57:42 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-6136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dave Brosius updated CASSANDRA-6136:
------------------------------------

    Attachment: 6136_v2.txt

version 1 disallows empty column names everywhere
version 2 disallows empty column names everywhere but in the system keyspace

> CQL should not allow an empty string as column identifier
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-6136
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6136
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Michaël Figuière
>            Assignee: Dave Brosius
>            Priority: Minor
>         Attachments: 6136.txt, 6136_v2.txt
>
>
> CQL currently allows users to create a table with an empty string as column identifier:
> {code}
> CREATE TABLE t (k int primary key, "" int);
> {code}
> Which results in the following table:
> {code}
> CREATE TABLE t (
>   k int,
>   "" int,
>   PRIMARY KEY (k)
> ) WITH
>   bloom_filter_fp_chance=0.010000 AND
>   caching='KEYS_ONLY' AND
>   comment='' AND
>   dclocal_read_repair_chance=0.000000 AND
>   gc_grace_seconds=864000 AND
>   index_interval=128 AND
>   read_repair_chance=0.100000 AND
>   replicate_on_write='true' AND
>   populate_io_cache_on_flush='false' AND
>   default_time_to_live=0 AND
>   speculative_retry='NONE' AND
>   memtable_flush_period_in_ms=0 AND
>   compaction={'class': 'SizeTieredCompactionStrategy'} AND
>   compression={'sstable_compression': 'SnappyCompressor'};
> {code}
> Empty strings are not allowed for keyspace and table identifiers though.
> I guess it's just a case that we haven't covered. Of course making it illegal in a future
version would be a breaking change, but nobody serious would manually have chosen such an
identifier...



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