incubator-cassandra-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Brian O'Neill <>
Subject Re: OoM querying very wide-row in CLI
Date Wed, 28 Mar 2012 01:49:46 GMT
10-4.  I'll see if I can track it down and submit a pull request that
specifies a default if one does not exist.


Brian O'Neill
Lead Architect, Software Development
Health Market Science | 2700 Horizon Drive | King of Prussia, PA 19406
p: 215.588.6024blog:

On 3/27/12 9:45 PM, "Jonathan Ellis" <> wrote:

>I believe we added support for specifying a column range to the cli
>recently.  I don't know if there is a default limit.
>On Tue, Mar 27, 2012 at 8:40 PM, Brian O'Neill <>
>> Today, running 1.0.7, we saw a node crash with an OutOfMemory.
>> We have a single row with ~10million columns in it. (using it as an
>> Accidentally, we attempted to list the CF in CLI that had the wide-row.
>>  This caused the CLI to hang and then eventually crashed Cassandra with
>> OoM.
>> I know this is a case of "If it hurts when you do that, don't do that",
>> we may want to better protect against it in the CLI and/or the DB.  I
>> we limit row counts on lists in CLI.  Do we also limit column counts?
>> not, I don't mind submitting a patch for this.
>> let me know,
>> brian
>> --
>> Brian ONeill
>> Lead Architect, Health Market Science (
>> mobile:215.588.6024
>> blog:
>> blog:
>Jonathan Ellis
>Project Chair, Apache Cassandra
>co-founder of DataStax, the source for professional Cassandra support

View raw message