Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
HDFS >> mail # dev >> Re: Moving to JDK7, JDK8 and new major releases

Copy link to this message
Re: Moving to JDK7, JDK8 and new major releases

 Thanks for starting this thread. I'll edit the wiki to provide more context around rolling-upgrades etc. which, as I pointed out in the original thread, are key IMHO.

On Jun 24, 2014, at 11:17 AM, Andrew Wang <[EMAIL PROTECTED]> wrote:

I don't see that anywhere in our current compatibility guidelines.

As you can see from http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/Compatibility.html we do not have such a policy (pasted here for convenience):

Java Classpath

User applications built against Hadoop might add all Hadoop jars (including Hadoop's library dependencies) to the application's classpath. Adding new dependencies or updating the version of existing dependencies may interfere with those in applications' classpaths.


Currently, there is NO policy on when Hadoop's dependencies can change.

Furthermore, we have *already* changed our classpath in hadoop-2.x. Again, as I pointed out in the previous thread, here is the precedent:

On Jun 21, 2014, at 5:59 PM, Arun C Murthy <[EMAIL PROTECTED]> wrote:
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.