> cassandra.yaml states that "Directories where Cassandra should store data on 
> disk. Cassandra will spread data evenly across them, subject to the 
> granularity of the configured compaction strategy.". I feel it is not correct 
> anymore.  Is it worth updating the doc?

In fact this changed after CASSANDRA-6696, but the comment on
cassandra.yaml (where the docs is created from) was never updated.
Would you mind opening a ticket to fix this comment ? Thanks.

2018-04-09 17:00 GMT-03:00 Venkata Hari Krishna Nukala
<n.v.harikrishna.apa...@gmail.com>:
> I spent some time in code (trunk) to understand it better. If I understood
> it correctly DiskBoundaryManager.getDiskBoundaries() method does the
> partition and it has nothing to do with the compaction strategy. Is it
> correct?
>
> cassandra.yaml states that "Directories where Cassandra should store data on
> disk. Cassandra will spread data evenly across them, subject to the
> granularity of the configured compaction strategy.". I feel it is not
> correct anymore.  Is it worth updating the doc?
>
>
>
> On Tue, Mar 27, 2018 at 9:59 PM, Jonathan Haddad <j...@jonhaddad.com> wrote:
>>
>> In Cassandra 3.2 and later, data is partitioned by token range, which
>> should give you even distribution of data.
>>
>> If you're going to go into 3.x, please use the latest 3.11, which at this
>> time is 3.11.2.
>>
>>
>> On Tue, Mar 27, 2018 at 8:05 AM Venkata Hari Krishna Nukala
>> <n.v.harikrishna.apa...@gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I am trying to replace machines having HDD with little powerful machines
>>> having SSD in production. The data present in each node is around 300gb. But
>>> the newer machines have 2 X 200GB SSDs instead of a single disk.
>>>
>>> "data_file_directories" looks like a multi-valued config which I can use.
>>> Am I looking at the right config?
>>>
>>> How does the data is distributed evenly? Leveled Compaction Strategy is
>>> used for the tables.
>>>
>>> Thanks!
>
>

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