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fix blockchain sync query performance issue

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This commit is contained in:
Lex Berezhny 2021-01-10 12:41:21 -05:00
parent 953b8dab76
commit f532a1fbcd
2 changed files with 11 additions and 5 deletions
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2
lbry/conf.py
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@ -598,7 +598,7 @@ class Config(CLIConfig):
('reflector.lbry.com', 5566)
])
full_nodes = Servers("Full blockchain nodes", [
('sdk.lbry.tech', 50001),
('sdk.lbry.tech', 5278),
('spv12.lbry.com', 50001),
('spv13.lbry.com', 50001),
('spv14.lbry.com', 50001),

14
lbry/db/queries/txio.py
View file

@ -2,7 +2,7 @@ import logging
from datetime import date
from typing import Tuple, List, Optional, Union
from sqlalchemy import union, func, text, between, distinct, case, false
from sqlalchemy import union, func, text, between, distinct, case, false, not_, exists
from sqlalchemy.future import select, Select
from lbry.constants import INVALIDATED_SIGNATURE_GRACE_PERIOD
@ -60,11 +60,17 @@ def where_unspent_txos(
if blocks is not None:
condition &= between(TXO.c.height, *blocks)
if missing_in_supports_table:
condition &= TXO.c.txo_hash.notin_(select(Support.c.txo_hash))
condition &= not_(
exists(select(1).where(Support.c.txo_hash == TXO.c.txo_hash))
)
elif missing_or_stale_in_claims_table:
condition &= TXO.c.txo_hash.notin_(select(Claim.c.txo_hash))
condition &= not_(
exists(select(1).where(Claim.c.txo_hash == TXO.c.txo_hash))
)
elif missing_in_claims_table:
condition &= TXO.c.claim_hash.notin_(select(Claim.c.claim_hash))
condition &= not_(
exists(select(1).where(Claim.c.claim_hash == TXO.c.claim_hash))
)
return condition