Hi Flavio,
Comments below.
On Sat, Jun 18, 2016 at 4:50 PM, Flavio Junqueira wrote:
> For acls, you can simply re-run the acl command to re-introduce them,
> unless you assume that no record of acls is maintained once they are
> introduced. If that's the case, then another way is to simply read
Why are you seeking to undo it?
On 06/17/2016 09:34 PM, Andrew Purtell wrote:
> HBase stores replication peering configuration in ZK. We're working on
> undoing that, but for now that information exists nowhere else.
>
>
> On Thu, Jun 16, 2016 at 2:47 PM, Ismael Juma wrote:
>
>> Hi Jordan,
>>
>>
For acls, you can simply re-run the acl command to re-introduce them, unless
you assume that no record of acls is maintained once they are introduced. If
that's the case, then another way is to simply read periodically the zk state
and keep that information somewhere else to be extra safe. This
See HBASE-14379. The points on configuration, state management, and security
apply.
> On Jun 17, 2016, at 7:25 PM, Martin Serrano wrote:
>
> Why are you seeking to undo it?
>
>> On 06/17/2016 09:34 PM, Andrew Purtell wrote:
>> HBase stores replication peering configuration in ZK. We're worki
HBase stores replication peering configuration in ZK. We're working on
undoing that, but for now that information exists nowhere else.
On Thu, Jun 16, 2016 at 2:47 PM, Ismael Juma wrote:
> Hi Jordan,
>
> Kafka stores ACLs as well as client and topic configs in ZooKeeper so that
> lends credence
Hi Jordan,
Kafka stores ACLs as well as client and topic configs in ZooKeeper so that
lends credence to your argument, I think.
Ismael
On Thu, Jun 16, 2016 at 11:41 PM, Jordan Zimmerman <
jor...@jordanzimmerman.com> wrote:
> Contrary to recommendations everywhere, my experience is that almost
>
Contrary to recommendations everywhere, my experience is that almost everyone
is storing source of truth data in ZooKeeper. It’s just too tempting. You have
a distributed file system just sitting there and it’s too easy to use. You get
a lot of great features like watches, etc. People are using
Yes, thank you to Jordan for the article!
Like Flavio, I personally have never come across the requirement for
ZooKeeper backups. I've generally followed the pattern that data stored
in ZooKeeper is truly transient, and applications are built either to
tolerate loss of that data or reconstruct it
Great write-up, Jordan, thanks!
Whether to backup zk data or not is possibly an open topic for this community,
even though we have discussed it at times. My sense has been that precisely
because of the issues you mention in your post, it is typically best to have a
way to recreate its data upon
