Cc: user <u...@hadoop.apache.org>; hdfs-dev <hdfs-dev@hadoop.apache.org>
Sent: Thursday, October 13, 2016 3:29 PM
Subject: Re: Issue in Rollback (after rolling upgrade) from hadoop 2.7.2 to
2.5.2
Hi Dinesh!
This is obviously a very hazardous situation you are in (if your data is
important
Hi Dinesh!
This is obviously a very hazardous situation you are in (if your data is
important), so I'd suggest moving carefully. Make as many backups of as
many things you can.
The usual mechanism that Hadoop uses when upgrading is to rename
directories of the old format and keep them around
