From 14e5dd74fef0928ad470dabd449d43f9dfbb8768 Mon Sep 17 00:00:00 2001
From: Alex Miller <alexmiller@apple.com>
Date: Fri, 5 Jul 2019 19:09:09 -0700
Subject: [PATCH] Add a checkOnly parameter to Cycle workload.

So that it can be used in the real world for consistency checking of
backup and DR.
---
 fdbserver/workloads/Cycle.actor.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fdbserver/workloads/Cycle.actor.cpp b/fdbserver/workloads/Cycle.actor.cpp
index e622ffe4a3..62c80af294 100644
--- a/fdbserver/workloads/Cycle.actor.cpp
+++ b/fdbserver/workloads/Cycle.actor.cpp
@@ -28,6 +28,7 @@ struct CycleWorkload : TestWorkload {
 	int actorCount, nodeCount;
 	double testDuration, transactionsPerSecond, minExpectedTransactionsPerSecond;
 	Key		keyPrefix;
+	bool checkOnly;
 
 	vector<Future<Void>> clients;
 	PerfIntCounter transactions, retries, tooOldRetries, commitFailedRetries;
@@ -44,6 +45,7 @@ struct CycleWorkload : TestWorkload {
 		nodeCount = getOption(options, LiteralStringRef("nodeCount"), transactionsPerSecond * clientCount);
 		keyPrefix = getOption(options, LiteralStringRef("keyPrefix"), LiteralStringRef(""));
 		minExpectedTransactionsPerSecond = transactionsPerSecond * getOption(options, LiteralStringRef("expectedRate"), 0.7);
+		checkOnly = getOption(options, LiteralStringRef("checkOnly"), false);
 	}
 
 	virtual std::string description() { return "CycleWorkload"; }
@@ -51,6 +53,7 @@ struct CycleWorkload : TestWorkload {
 		return bulkSetup( cx, this, nodeCount, Promise<double>() );
 	}
 	virtual Future<Void> start( Database const& cx ) {
+		if (checkOnly) return Void();
 		for(int c=0; c<actorCount; c++)
 			clients.push_back(
 				timeout(