From 1575cd41ebf8ac5deccf199ec8121e6020f23011 Mon Sep 17 00:00:00 2001
From: Simon Detheridge <s@sd.ai>
Date: Mon, 10 Aug 2020 15:44:41 +0100
Subject: [PATCH] Don't pass empty array to asyncPool when archiving

---
 services/docstore/app/js/DocArchiveManager.js | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/services/docstore/app/js/DocArchiveManager.js b/services/docstore/app/js/DocArchiveManager.js
index e7fc4ee848..d564113c9b 100644
--- a/services/docstore/app/js/DocArchiveManager.js
+++ b/services/docstore/app/js/DocArchiveManager.js
@@ -39,11 +39,12 @@ async function archiveAllDocs(projectId) {
     throw new Errors.NotFoundError(`No docs for project ${projectId}`)
   }
 
-  await asyncPool(
-    PARALLEL_JOBS,
-    docs.filter((doc) => !doc.inS3),
-    (doc) => archiveDoc(projectId, doc)
-  )
+  const docsToArchive = docs.filter((doc) => !doc.inS3)
+  if (docsToArchive.length) {
+    await asyncPool(PARALLEL_JOBS, docsToArchive, (doc) =>
+      archiveDoc(projectId, doc)
+    )
+  }
 }
 
 async function archiveDoc(projectId, doc) {