On Thu, Feb 14, 2019 at 4:39 PM Jeff Jirsa wrote:
>
> Wait, doesn't cleanup just rewrite every SSTable one by one? Why would
compaction strategy matter? Do you mean that after cleanup STCS may pick
some resulting tables to re-compact them due to the min/max size
difference, which would not be th
> On Feb 14, 2019, at 12:19 AM, Oleksandr Shulgin
> wrote:
>
>> On Wed, Feb 13, 2019 at 6:47 PM Jeff Jirsa wrote:
>> Depending on how bad data resurrection is, you should run it for any host
>> that loses a range. In vnodes, that's usually all hosts.
>>
>> Cleanup with LCS is very cheap.
Cleanup is a great way to free up disk space.
Just note you might run into
https://issues.apache.org/jira/browse/CASSANDRA-9036 if you use a version
older than 2.0.15.
On Thu, Feb 14, 2019 at 10:20 AM Oleksandr Shulgin <
oleksandr.shul...@zalando.de> wrote:
> On Wed, Feb 13, 2019 at 6:47 PM Je
On Wed, Feb 13, 2019 at 6:47 PM Jeff Jirsa wrote:
> Depending on how bad data resurrection is, you should run it for any host
> that loses a range. In vnodes, that's usually all hosts.
>
> Cleanup with LCS is very cheap. Cleanup with STCS/TWCS is a bit more work.
>
Wait, doesn't cleanup just rew
On Wed, Feb 13, 2019 at 7:47 AM Oleksandr Shulgin <
oleksandr.shul...@zalando.de> wrote:
> On Wed, Feb 13, 2019 at 4:40 PM Jeff Jirsa wrote:
>
>> Some people who add new hosts rebalance the ring afterward - that
>> rebalancing can look a lot like a shrink.
>>
>
> You mean by moving the tokens? T
On Wed, Feb 13, 2019 at 4:40 PM Jeff Jirsa wrote:
> Some people who add new hosts rebalance the ring afterward - that
> rebalancing can look a lot like a shrink.
>
You mean by moving the tokens? That's only possible if one is not using
vnodes, correct?
I also believe, but don’t have time to pr
Some people who add new hosts rebalance the ring afterward - that rebalancing
can look a lot like a shrink.
I also believe, but don’t have time to prove, that enough new hosts can
eventually give you a range back (moving it all the way around the ring) - less
likely but probably possible.
Eas
On Wed, Feb 13, 2019 at 5:31 AM Jeff Jirsa wrote:
> The most likely result of not running cleanup is wasted disk space.
>
> The second most likely result is resurrecting deleted data if you do a
> second range movement (expansion, shrink, etc).
>
> If this is bad for you, you should run cleanup n
The most likely result of not running cleanup is wasted disk space.
The second most likely result is resurrecting deleted data if you do a second
range movement (expansion, shrink, etc).
If this is bad for you, you should run cleanup now. For many use cases, it’s a
nonissue.
If you know you’
Hi,
I should have run cleanup after adding a few nodes to my cluster, about 2
months ago, the ttl is 6 month, What happens now? Should i worry about any
catastrophics?
Should i run the cleanup now?
Thanks in advance
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