Upgrade sstables vs major compaction

[Nitan Kainth <ni...@gmail.com>]

Hi,

we upgraded binaries from 3.0 to 4.0.
we run major compaction periodically for some valid reasons.

Now, we are considering running major compaction instead of
upgradesstables. Repair is disabled, cluster have normal reads/writes (few
hundered/second).

Plan is to run major compaction to clear tombstones and reduce data volume.
Once major compaction is done, we will run upgradesstable for any leftover
sstables if any.

Can you please advise major compaction could cause issues instead of
upgradesstables? Or any other feedback in this action plan?

Re: Upgrade sstables vs major compaction

[Nitan Kainth <ni...@gmail.com>]

Not sure where the binaries were obtained from. I am helping a friend who
is not part of this DL.

based on understanding, i proposed above mentioned plan wanted to hear
others' opinions.

On Mon, Jun 24, 2019 at 6:06 AM Oleksandr Shulgin <
oleksandr.shulgin@zalando.de> wrote:

> On Fri, Jun 21, 2019 at 7:02 PM Nitan Kainth <ni...@gmail.com>
> wrote:
>
>>
>> we upgraded binaries from 3.0 to 4.0.
>>
>
> Where did you get the binaries for 4.0?  It is not released officially
> yet, so I guess you were using SVN trunk?  Or was there a pre-release?
>
> we run major compaction periodically for some valid reasons.
>>
>> Now, we are considering running major compaction instead of
>> upgradesstables. Repair is disabled, cluster have normal reads/writes (few
>> hundered/second).
>>
>> Plan is to run major compaction to clear tombstones and reduce data
>> volume. Once major compaction is done, we will run upgradesstable for any
>> leftover sstables if any.
>>
>> Can you please advise major compaction could cause issues instead of
>> upgradesstables? Or any other feedback in this action plan?
>>
>
> Sounds legit.
>
> --
> Alex
>
>

Re: Upgrade sstables vs major compaction

[Oleksandr Shulgin <ol...@zalando.de>]

On Fri, Jun 21, 2019 at 7:02 PM Nitan Kainth <ni...@gmail.com> wrote:

>
> we upgraded binaries from 3.0 to 4.0.
>

Where did you get the binaries for 4.0?  It is not released officially yet,
so I guess you were using SVN trunk?  Or was there a pre-release?

we run major compaction periodically for some valid reasons.
>
> Now, we are considering running major compaction instead of
> upgradesstables. Repair is disabled, cluster have normal reads/writes (few
> hundered/second).
>
> Plan is to run major compaction to clear tombstones and reduce data
> volume. Once major compaction is done, we will run upgradesstable for any
> leftover sstables if any.
>
> Can you please advise major compaction could cause issues instead of
> upgradesstables? Or any other feedback in this action plan?
>

Sounds legit.

-- 
Alex