From 8e57c2e4139e2ef7f70812f38ea3a682c120084f Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Wed, 5 May 2021 15:47:11 +0300
Subject: [PATCH] Provide more context to a panic.

I just bumped into this panic, but couldn't reproduce. Not sure what
happened, but let's provide more context.
---
 pageserver/src/walredo.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pageserver/src/walredo.rs b/pageserver/src/walredo.rs
index 9ac1ccb526..d09c727c45 100644
--- a/pageserver/src/walredo.rs
+++ b/pageserver/src/walredo.rs
@@ -178,7 +178,7 @@ impl WalRedoManagerInternal {
 
         // Loop forever, handling requests as they come.
         loop {
-            let request = self.request_rx.recv().unwrap();
+            let request = self.request_rx.recv().expect("WAL redo request channel was closed");
 
             let result = runtime.block_on(self.handle_apply_request(&process, &request));
             let result_ok = result.is_ok();