From 2632d49282a5c1f5e49ac53918e6ad4c69ebce83 Mon Sep 17 00:00:00 2001
From: liever18 <47295183+liever18@users.noreply.github.com>
Date: Wed, 27 Apr 2022 02:53:11 +0800
Subject: [PATCH] HADOOP-18216. io.file.buffer.size must be positive (#4220)

Documents that the buffer size must be > 0

Contributed by Jingxuan Fu.
---
 .../hadoop-common/src/main/resources/core-default.xml          | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
index a93f7fa273..85138611c3 100644
--- a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
+++ b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
@@ -793,7 +793,8 @@
   <description>The size of buffer for use in sequence files.
   The size of this buffer should probably be a multiple of hardware
   page size (4096 on Intel x86), and it determines how much data is
-  buffered during read and write operations.</description>
+  buffered during read and write operations. Must be greater than zero.
+  </description>
 </property>
 
 <property>