发自我的 iPhone
在 2009-6-21，9:16，Leo Dagum <leo_da...@yahoo.com> 写到：
Thanks for the kind words. I'm copying this reply to the cloudbase
mail list as further discussion is more appropriate there.
The way indexing is currently implemented you need to manually
update the index as you add more data. If you have not been doing
this then that may explain why you are seeing excessive performance
degradation with greater data. If that doesn't help, then we'd love
to work with you to help resolve the issue.
- leo
________________________________
From: Edisonxp <ediso...@gmail.com>
To: "core-user@hadoop.apache.org" <core-user@hadoop.apache.org>
Sent: Saturday, June 20, 2009 7:21:11 AM
Subject: Re: Announcing CloudBase-1.3.1 release
I've used cloudbase for several months,since version 1.1 .it's a
good thing,your team did a great job.
These days, I'm annoying with a problem:with the increasing of
data,the my daily queries become more and more slow.i hope that
cloudbase should have a 'partition' feature with the creation of
table.I used to try 'index', but it seems nothing changed.
发自我的 iPhone
在 2009-6-20，3:19，Leo Dagum <leo_da...@yahoo.com> 写到：
CloudBase is a data warehouse system for Terabyte & Petabyte scale
analytics. It is built on top of hadoop. It allows you
to query flat files using ANSI SQL.
We have released 1.3.1 version of CloudBase on sourceforge-
https://sourceforge.net/projects/cloudbase
Please give it a try and send us your feedback.
You can follow CloudBase related discussion in the google mail list:
cloudbase-us...@googlegroups.com
Release notes -
New Features:
* CREATE CSV tables - One can create tables on top of data in CSV
(Comma Separated Values) format and query them using SQL. Current
implementation doesn't accept CSV records which span multiple lines.
Data may not be processed correctly if a field contains embedded
line-
breaks. Please visit http://cloudbase.sourceforge.net/index.html#userDoc
for detailed specification of the CSV format.
Bug fixes:
* Aggregate function 'AVG' returns the same value as 'SUM' function
* If a query has multiple aliases, only the last alias works
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