Re: Fast insertion indexes: why no developments - Mailing list pgsql-hackers

From Leonardo Francalanci
Subject Re: Fast insertion indexes: why no developments
Date
Msg-id 1383152367887-5776416.post@n5.nabble.com
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In response to Re: Fast insertion indexes: why no developments  (Jeff Janes <jeff.janes@gmail.com>)
List pgsql-hackers
Jeff Janes wrote
> Are partitions read-only once time has moved on, or can stragglers show up
> that need to be inserted into older partitions?
> 
> You could periodically merge older partitions into larger tables, index
> those aggregated tables, then transactionally disinherit the old
> partitions
> and inherit the new aggregated one.  This would keep the value of K down,
> at the expense of re-writing data multiple times (but all method write
> data
> multiple times, some just hide it from you).

Yes, we could "merge" the partitions: the idea was to merge them during
night hour, when traffic is low ( and NSA people are sleeping ;) )



Jeff Janes wrote
> By the way, what is the transaction structure of your inserts?  Are they
> large batches between commits, or is each row committed?

Of course large batches (using COPY)




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