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From <SEAN_R_DUR...@homedepot.com>
Subject RE: limit the size of data type LIST
Date Thu, 13 Aug 2015 16:55:49 GMT
This sounds like something you do on the client side BEFORE you insert. Or are you wanting
to limit the size of the list coming out to the client?


Sean Durity
Lead Cassandra Admin, Big Data Team

From: yuankui [mailto:kui.yuan@fraudmetrix.cn]
Sent: Thursday, August 13, 2015 9:06 AM
To: user@cassandra.apache.org
Subject: limit the size of data type LIST

hi, friends

I am design a message history table

CREATE TABLE message_history (
    user_name text PRIMARY KEY,
    time timestamp,
    message_details list<text>,
);

so that I can query a user's message via primary key `user_name` at once.

but the item in `message_details` list may be very long so that I want to limit the list size
of the message_details list.

is there a way to solve this?

like a redis operation `LTRIM` - http://redis.readthedocs.org/en/latest/list/ltrim.html



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