From 76233ed8b77c293e669f42daec855cabf74b9f3a Mon Sep 17 00:00:00 2001
From: what-a-good-jungle <353187194@qq.com>
Date: Mon, 16 Jul 2018 16:59:29 +0800
Subject: [PATCH] [ISSUE #359]Fix logging check period (#360)

---
 .../java/org/apache/rocketmq/logging/inner/LoggingBuilder.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java b/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
index 469cb52b..f457a695 100644
--- a/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
+++ b/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
@@ -966,7 +966,7 @@ public class LoggingBuilder {
                     rollingCalendar.setType(i);
                     Date next = new Date(rollingCalendar.getNextCheckMillis(epoch));
                     String r1 = simpleDateFormat.format(next);
-                    if (r0.equals(r1)) {
+                    if (r0 != null && r1 != null && !r0.equals(r1)) {
                         return i;
                     }
                 }
-- 
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