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From Jayadev Jayaraman <jdisal...@gmail.com>
Subject Re: what does nodetool compact command do for leveled compactions?
Date Thu, 24 Oct 2013 23:58:52 GMT
Thanks for the reply. I have one more question. If multiple columns with
identical names but with different timestamps are bulk loaded (with
sstableloader) into a CF, and we had LCS running in the background, would a
slice predicate query retrieve multiple columns with the same name assuming
compaction isn't finished yet and there still are SSTables sitting in level
0? Or do queries return only the columns with the most recent timestamp for
each name regardless?  (I would guess at the latter but I wanted to make
sure)
On Oct 24, 2013 7:08 PM, "Robert Coli" <rcoli@eventbrite.com> wrote:

> On Thu, Oct 24, 2013 at 3:13 PM, rash aroskar <rashmi.aroskar@gmail.com>wrote:
>
>> I have a column family created with strategy of leveled compaction. If I
>> execute nodetool compact command, will the columnfamily be compacted using
>> size tiered compaction strategy?
>>
>
> No.
>
>
>> If yes, after the major size tiered compaction finishes will it at any
>> point trigger leveled compaction back on the column family?
>>
>
> https://issues.apache.org/jira/browse/CASSANDRA-6092
>
> and especially :
>
>
> https://issues.apache.org/jira/browse/CASSANDRA-6092?focusedCommentId=13793012&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13793012
>
> tl;dr : if you have more than a single SSTable, it will do something.
> There is disagreement whether it "should" do something if you only have a
> single SSTable. My view, for the record, is "yes."
>
> =Rob
>
>

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