Hello All,
I have a graph of about 200M relationships and often I need to delete a
larges amount of them.
For the proxy code below I am seeing huge memory usage and memory thrashing
when deleting about 15M relationships.
When it hits tx.close() I see all CPU cores start working at close to 100%
util and thrash for > 30mins.
I need this to work in <5mins ideally.
(note when I execute large amounts of changes to properties or create large
amounts of new properties I don't have such issues)
Any advice? Why is this happening?
Regards, John.
int txc = 0;
// serially delete the links
try ( Transaction tx = db.beginTx() ) {
for (int i=0; i<deletedLinks.size(); i++) {
Relationship rel = db.getRelationshipById(deletedLinks.get(i));
rel.delete();
txc++;
if (txc>50000) {
txc=0;
tx.success();
}
}
tx.success();
tx.close();
}
catch (Exception e) {
System.out.println("Exception link deletion: " + e
.getMessage());
}
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