RE: Hadoop migration downtime: Hadoop 1.x to 2.x

2014-01-20 Thread Nirmal Kumar
Hi All, Any thoughts to share? -Nirmal From: Nirmal Kumar Sent: Thursday, January 16, 2014 5:44 PM To: user@hadoop.apache.org Subject: Hadoop migration downtime: Hadoop 1.x to 2.x All, I want to know while upgrading\migrating from Apache Hadoop 1.x to 2.x(MRv2+YARN) in a production cluster

Re: Hadoop migration downtime: Hadoop 1.x to 2.x

2014-01-20 Thread Ravi Mutyala
If you have a mirror of your production environment (not in size but in versions of hardware and software), I suggest you run migration steps on this environment to test and measure the down times. Actual down times are dependent on components in use. You could also do some of your backup steps

Hadoop migration downtime: Hadoop 1.x to 2.x

2014-01-16 Thread Nirmal Kumar
All, I want to know while upgrading\migrating from Apache Hadoop 1.x to 2.x(MRv2+YARN) in a production cluster of several nodes is there any *anticipated downtime* that one needs to be aware of? I am asking this since this will hamper the *HA (High Availability)*. IMHO as with any other