Inside a TDB2 directory, you'll see "Data-0001". That's the first
database. TDB2 has a "compact" operation which would create "Data-0002"
etc and after that Data-0001 is not used and never touched. Delete or
archive as you choose.
It's simple at the moment - a copy of the database so much like
backup-restore except it can happen to a running database (writers are
locked out, readers can continue until the switchover point). Plenty of
scope to make more efficient.
Compaction is not available from Fuseki yet.
Andy
On 14/06/18 15:11, ajs6f wrote:
Yes, there is some truth in that.
TDB1 uses a dictionary that maps node IDs to node labels (so that, e.g. a literal that is
used as an object doesn't need to be in-line recorded in the indexes, which could quickly
bloat the indexes). That dictionary isn't "garbage collected", so part of what
you are seeing may be the absence of mappings that aren't in use. Andy can say more about
what might be happening with the indexes themselves or how this does or doesn't apply to
TDB2.
ajs6f
On Jun 14, 2018, at 10:00 AM, Mikael Pesonen <mikael.peso...@lingsoft.fi> wrote:
Just managed to load using tdbloader2, it even reads the gz file directly.
Noticed that new database size on disk is quite a bit smaller:
payload size: 2.8Gt
old size on disk: 21Gt
new size on disk: 3Gt
So it seems that its good to do cleanup of the db every now and then using the
backup?
On 14.6.2018 16:55, ajs6f wrote:
That dataset is just an NQuads file. You can stick it into Fuseki as you would
do with any other NQuads file. You can certainly use tdbloader2, or you can
script individual graph loads using GSP. tdbloader2 will produce an optimal set
of indexes.
ajs6f
On Jun 14, 2018, at 7:55 AM, Mikael Pesonen <mikael.peso...@lingsoft.fi> wrote:
Hi,
made backup using Fuseki HTTP Administration Protocol:
ds_2018-06-14_14-43-32.nq.gz
How do I restore it in Linux? Empty existing data and use tdbloader2? How
exactly?
Thank you
--
Lingsoft - 30 years of Leading Language Management
www.lingsoft.fi
Speech Applications - Language Management - Translation - Reader's and Writer's
Tools - Text Tools - E-books and M-books
Mikael Pesonen
System Engineer
e-mail: mikael.peso...@lingsoft.fi
Tel. +358 2 279 3300
Time zone: GMT+2
Helsinki Office
Eteläranta 10
FI-00130 Helsinki
FINLAND
Turku Office
Kauppiaskatu 5 A
FI-20100 Turku
FINLAND
