I though that both the capacity and fair share scheduler are available in
0.19. Are there new features add in 0.20? Is that documented anywhere?
How do I learn more?
Bill
On Fri, Mar 20, 2009 at 7:28 AM, David B. Ritch wrote:
> Looks like there's been quite a bit of work on both the Capacity
>
Looks like there's been quite a bit of work on both the Capacity
Scheduler and the Fair Scheduler. Are there others we should look at in
20.0?
Again, thank you for your informative responses.
David
Raghu Angadi wrote:
>
> I think 0.20.0 is preferred because of new job scheduler(s) there.
> Stab
It should also be pointed out that the "rollback" process restores your HDFS
cluster to the state it was at when it was upgraded by restoring a
checkpoint -- it does not "downgrade" your current set of blocks. So if
you've pulled new data into HDFS since the upgrade, that will be lost
- Aaron
On W
I think 0.20.0 is preferred because of new job scheduler(s) there.
Stability wise, 0.20 is expected to be as good as 0.19.2.
I don't know the schedule for 0.19.2.
Raghu.
David Ritch wrote:
Raghu,
Thank you for your prompt and informative response. Moving to anything that
ends in .0 is a b
Bill,
Thank you. Unfortunately, that will not work for us, as our hadoop-19 has
long been finalized.
dbr
On Wed, Mar 18, 2009 at 2:35 PM, Bill Au wrote:
> As long as the version upgrade has not been finalized, here's the procedure
> I use to downgrade:
>
>
> 1. make sure that the previous v
As long as the version upgrade has not been finalized, here's the procedure
I use to downgrade:
1. make sure that the previous version upgrade has not been finalized. A
version upgrade cannot be rollback if it has been finalized.
bin/hadoop dfsadmin -upgradeProgress status
2. stop m
Raghu,
Thank you for your prompt and informative response. Moving to anything that
ends in .0 is a bit scary - what are the reasons to go with 0.20.0 instead
of 0.19.2? Yahoo is jumping from 0.18.x directly to 0.20.0? Why is Yahoo
skipping the 0.19.x release?
Is the expectation that 0.19.2 wil
Short is answer I am afraid is no.
As an alternative, I recommend upgrading to latest 0.19.x or 0.20.0 (to
be released in couple of days). 0.19.2 is certainly a lot better than
0.19.0. Yahoo is rolling out 0.20.x if that helps your confidence.
Raghu.
David Ritch wrote:
There is an establis
