From 4870fa7f68728cb51bc81f3d4f74cd53b1dd76f6 Mon Sep 17 00:00:00 2001
From: Anastasia <a.lubennikova@postgrespro.ru>
Date: Fri, 9 Nov 2018 13:59:56 +0300
Subject: [PATCH] more informative error message for failed WAL record read

---
 src/parsexlog.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/parsexlog.c b/src/parsexlog.c
index 7f7365f5..ee7b5076 100644
--- a/src/parsexlog.c
+++ b/src/parsexlog.c
@@ -237,10 +237,11 @@ doExtractPageMap(void *arg)
 	 */
 	if (XLogRecPtrIsInvalid(found))
 	{
-		elog(WARNING, "Thread [%d]: could not read WAL record at %X/%X",
+		elog(WARNING, "Thread [%d]: could not read WAL record at %X/%X. %s",
 			 private_data->thread_num,
 			 (uint32) (extract_arg->startpoint >> 32),
-			 (uint32) (extract_arg->startpoint));
+			 (uint32) (extract_arg->startpoint),
+			 (xlogreader->errormsg_buf[0] != '\0')?xlogreader->errormsg_buf:"");
 		PrintXLogCorruptionMsg(private_data, ERROR);
 	}
 	extract_arg->startpoint = found;