Thank you, Harsh! -----Original Message----- From: Harsh J [mailto:[email protected]] Sent: Friday, September 14, 2012 7:00 PM To: [email protected] Subject: Re: HDFS compatibility.
Jane, Yes with a regular upgrade, your data will be available, not lost. For doing upgrades, see http://hadoop.apache.org/docs/stable/hdfs_user_guide.html#Upgrade+and+Rollback I recommend reading the process and text described in the section "Upgrades" (under Maintenance), page 316 | Chapter 10: "Administering Hadoop" of Tom White's 2nd Edition of Hadoop: The Definitive Guide. HTH. On Sat, Sep 15, 2012 at 4:21 AM, Jane Chen <[email protected]> wrote: > > If I were to upgrade from 1.0 to 0.23.1 or 2.0, will my data stored on HDFS > still be accessible to the 2.0 system? Is there any documented upgrade > process available? > > Thanks, > Jane -- Harsh J
