From 8a86276a6ef6a8f79e11a264087e6f22790d67c5 Mon Sep 17 00:00:00 2001
From: Dmitry Rodionov <dmitry@zenith.tech>
Date: Wed, 23 Mar 2022 17:40:29 +0400
Subject: [PATCH] add more context to error

---
 pageserver/src/remote_storage/storage_sync/upload.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pageserver/src/remote_storage/storage_sync/upload.rs b/pageserver/src/remote_storage/storage_sync/upload.rs
index 8fdd91dd18..431b5ec484 100644
--- a/pageserver/src/remote_storage/storage_sync/upload.rs
+++ b/pageserver/src/remote_storage/storage_sync/upload.rs
@@ -182,7 +182,13 @@ async fn try_upload_checkpoint<
             }
         })
         .collect::<Vec<_>>();
-    ensure!(!files_to_upload.is_empty(), "No files to upload");
+
+    ensure!(
+        !files_to_upload.is_empty(),
+        "No files to upload. Upload request was: {:?}, already uploaded files: {:?}",
+        new_checkpoint.layers,
+        files_to_skip,
+    );
 
     compression::archive_files_as_stream(
         &timeline_dir,