On 12/19/2010 10:39 AM, Martin Becker wrote:
Hello everybody,
is there a possibility to make sure that certain/all reduce tasks,
i.e. the reducers to certain keys, are executed in a specified order?
This is Job internal, so the Job Scheduler is probably the wrong place to start?
Does the order induced by the Comparable interface influence the
execution order at all?
Thanks in advance,
Martin
Not that I know of. And again, this kind of defeats the whole purpose
of Hadoop. The whole idea is that tasks are executed asynchronously /
in parallel. What you're asking for is to execute tasks synchronously
and in sequence.
DR
