From 3c63668dd4e78fd6b366dfdc8b4e314e98c275c1 Mon Sep 17 00:00:00 2001
From: "mergify[bot]" <37929162+mergify[bot]@users.noreply.github.com>
Date: Mon, 18 Nov 2024 11:48:32 -0500
Subject: [PATCH] Use repeatable read for pnl tick generation. (backport #2578)
 (#2580)

Co-authored-by: vincentwschau <99756290+vincentwschau@users.noreply.github.com>
---
 indexer/services/roundtable/src/tasks/create-pnl-ticks.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/indexer/services/roundtable/src/tasks/create-pnl-ticks.ts b/indexer/services/roundtable/src/tasks/create-pnl-ticks.ts
index fde4918a18..7ef1df8154 100644
--- a/indexer/services/roundtable/src/tasks/create-pnl-ticks.ts
+++ b/indexer/services/roundtable/src/tasks/create-pnl-ticks.ts
@@ -2,6 +2,7 @@ import { logger, stats } from '@dydxprotocol-indexer/base';
 import {
   BlockFromDatabase,
   BlockTable,
+  IsolationLevel,
   PnlTicksCreateObject,
   PnlTicksTable,
   Transaction,
@@ -50,8 +51,10 @@ export default async function runTask(): Promise<void> {
     return;
   }
 
-  // Start a transaction to ensure different table reads are consistent.
+  // Start a transaction to ensure different table reads are consistent. Use a repeatable read
+  // to ensure all reads within the transaction are consistent.
   const txId: number = await Transaction.start();
+  await Transaction.setIsolationLevel(txId, IsolationLevel.REPEATABLE_READ);
   let newTicksToCreate: PnlTicksCreateObject[] = [];
   try {
     await perpetualMarketRefresher.updatePerpetualMarkets();