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From "Jonathan Ellis (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4093) schema_* CFs do not respect column comparator which leads to CLI commands failure.
Date Fri, 30 Mar 2012 14:18:29 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242367#comment-13242367
] 

Jonathan Ellis commented on CASSANDRA-4093:
-------------------------------------------

bq. we agreed on CASSANDRA-3782 that it could sometimes be usefull to index a specific column
in a wide row as a way of 'tagging' such wide rows 

But you don't need to support indexing the CT column itself, to support that use case.  More
consistent to have a "tag" sparse column and index that instead.

bq. really adding new and useful flexibility

New, yes; useful? dubious.

We've barely educated people on CQL3 wide rows as it is, now is not a good time to complicate
things further.  Let's take an incremental approach and add such things in response to user
demand, should it materialize, instead of adding features "because we can."
                
> schema_* CFs do not respect column comparator which leads to CLI commands failure.
> ----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4093
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4093
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>    Affects Versions: 1.1.0
>            Reporter: Dave Brosius
>            Assignee: Sylvain Lebresne
>             Fix For: 1.1.0
>
>         Attachments: 4093.txt, CASSANDRA-4093-CD-changes.patch
>
>
> ColumnDefinition.{ascii, utf8, bool, ...} static methods used to initialize schema_*
CFs column_metadata do not respect CF comparator and use ByteBufferUtil.bytes(...) for column
names which creates problems in CLI and probably in other places.
> The CompositeType validator throws exception on first column
> String columnName = columnNameValidator.getString(columnDef.name);
> Because it appears the composite type length header is wrong (25455)
> AbstractCompositeType.getWithShortLength
> java.lang.IllegalArgumentException
> 	at java.nio.Buffer.limit(Buffer.java:247)
> 	at org.apache.cassandra.db.marshal.AbstractCompositeType.getBytes(AbstractCompositeType.java:50)
> 	at org.apache.cassandra.db.marshal.AbstractCompositeType.getWithShortLength(AbstractCompositeType.java:59)
> 	at org.apache.cassandra.db.marshal.AbstractCompositeType.getString(AbstractCompositeType.java:139)
> 	at org.apache.cassandra.cli.CliClient.describeColumnFamily(CliClient.java:2046)
> 	at org.apache.cassandra.cli.CliClient.describeKeySpace(CliClient.java:1969)
> 	at org.apache.cassandra.cli.CliClient.executeShowKeySpaces(CliClient.java:1574)
> (seen in trunk)

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