cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1156) support querying multiple nodes for index scan
Date Mon, 02 Aug 2010 20:14:17 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-1156:
--------------------------------------

    Attachment:     (was: 0001-update-thrift.txt)

> support querying multiple nodes for index scan
> ----------------------------------------------
>
>                 Key: CASSANDRA-1156
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1156
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>             Fix For: 0.7 beta 1
>
>         Attachments: 1156-v2.txt
>
>
> given CASSANDRA-1155, we should query multiple nodes for the rows corresponding to the
given index criteria, such that we have a 90% chance of getting enough rows w/o having to
do another query (but, if our estimate is incorrect, we do need to loop and do a 2nd query).
> we start with the first node in token order, so that we only have to query a single node
for low cardinality (i.e., every index value has many rows associated with it).  we do this
by ordering the keys in the index row, in partitioner order.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message