Unchain meta - External triplestore and related work#361
Draft
ggVGc wants to merge 3 commits into
Draft
Conversation
This simply removes the magic index and all related code. It is the starting point from which we can rework `meta` to work with an external triplestore. We could do it the other way around, but I believe this way is the simplest.
Some cleanup to clarify the state of the repository at this time: * Rename the `magic` package `enrichment` instead, since it now only relates to enriching SPARQL queries, rather than any custom indexing * Rename `CpNotifyingSail` to `EnrichingSail` since that describes the purpose better * Some more associated renaming and moving of things
ggVGc
force-pushed
the
valter/meta-unchained
branch
from
cfef09b to
396e0be
Compare
ggVGc
changed the title
metameta (external triplestore and related work)
ggVGc
changed the title
meta (external triplestore and related work)meta - External triplestore and related work
Mostly works, but still improvements to be made. TODO: Summarize changes and motivation. **Contains two scripts in `tools/` for populating Virtuoso from RDFLog:** - One which exports `.ttl` files which could be bulk loaded directly by Virtoso. - Another which uses [Graph Store protocol](https://www.w3.org/2009/sparql/docs/http-rdf-update/) to send triples over HTTP. Both of these require loading all triples from each graph in RDFLog into memory first, in order to resolve all assertions and retractions before outputting the final set of triples. This requires a lot of ram, around 10GB for me, but is still within reason. Using the normal RDF Update protocol with Virtuoso works, but only for batches smaller than a few hundred triples at a time, which is very slow for a full re-ingestion. It is also wasteful since a lot of the assertions are later retracted. **Issues:** - [x] ~~Currently initial fresh ingestion from RDFLog into Virtuoso fails with permission issues like: `Virtuoso 42000 Error SR186:SECURITY: No permission to execute procedure DB.DBA.SPARQL_INSERT_DICT_CONTENT` even when using `dba` user.~~ - This was solved by https://github.com/ICOS-Carbon-Portal/meta/pull/364/changes#diff-e1f2b5f8f0029f60bb270bc106c7191c75eee54f8680f68d7c8324985d89e9cdR28-R31 --------- Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Contributor
Author
|
@jonathanthiry This is still under active development, but at this stage it has the main changes of removing the magic index and transitioning to a new triplestore, and I think it would be good to take a quick overview look at least to see if I have made any major mistake. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This is the collection branch for the work of moving
metaaway from custom indexing and towards using an external triplestore, which initially will beVirtuoso.All specific work will happen in other PRs which will be merged here, until we have a service that replicates current behaviour.