---------- Forwarded message ----------
From: Medha Atre <
medha.atre@gmail.com>
Date: Mon, Nov 12, 2012 at 5:11 PM
Subject: growing size of database
To: Communication channel for MonetDB users <
users-list@monetdb.org>
Hi,
I am running the latest MonetDB 11.13.3. I loaded a pretty tiny RDF
dataset of 13 million triples and created some "vertical partitions"
on predicate values. After having done dataset loading, I checked the
size of the dataset folder and it showed to be _258 MB_. Then I ran
about 6000+ bulk queries by periodically shutting down the server
after about 1000 queries each time. The queries finished successfully
and there was no crash. After the final query I stopped the database
"monetdb stop dbname" and shutdown the main server too "monetdbd stop
/path/to/dbfarm".
After that I again checked the size of the database folder and then it
showed it to be _5.8GB_ and the "HC" folder under "bat" was shown to
have size of about 3 GB with some other files having sizes between
300-700 MBs.
It seems mysterious to me why would the size of database go on
increasing as much as 25 times the original size.
I intend to load much larger data (> 1 billion triples), and want to
avoid growing disk size of the dataset due to limited disk-space.
Can someone please enlighten?
Medha
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