[hbase] branch master updated: HBASE-21740 Fix NPE while shutting down RS

[xucang]

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xucang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/hbase.git


The following commit(s) were added to refs/heads/master by this push:
     new 7be71c0  HBASE-21740 Fix NPE while shutting down RS
7be71c0 is described below

commit 7be71c0f558f77e0e41be3dad523a74bab1d3db2
Author: lujie <lu...@ict.ac.cn>
AuthorDate: Sun Feb 17 20:02:55 2019 +0800

    HBASE-21740 Fix NPE while shutting down RS
---
 .../main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git 
a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
 
b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
index c897502..a441ceb 100644
--- 
a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
+++ 
b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
@@ -1976,7 +1976,9 @@ public class HRegionServer extends HasThread implements
 
     Threads.setDaemonThreadRunning(this.walRoller.getThread(), getName() + 
".logRoller",
     uncaughtExceptionHandler);
-    this.cacheFlusher.start(uncaughtExceptionHandler);
+    if (this.cacheFlusher != null) {
+      this.cacheFlusher.start(uncaughtExceptionHandler);
+    }
     Threads.setDaemonThreadRunning(this.procedureResultReporter,
       getName() + ".procedureResultReporter", uncaughtExceptionHandler);