AFAIK 0.21 is not really a stable version of hadoop . So if this upgrade is on a production cluster it'd be better to go in with 0.20.203.
Bejoy K S
From: Shouguo Li <[EMAIL PROTECTED]>
Date: Thu, 1 Sep 2011 11:41:46
To: <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: upgrading hadoop package
i'm planning to upgrade my hadoop cluster from 0.20.1 to 0.21 to take
advantage of new bz2 splitting feature. i found a simple upgrade guide,
but i can't find anything that's related to hive. do we need to do anything
for hive? is the migration transparent to hive?