[hbase] branch branch-1 updated: HBASE-21740 Fix NPE while shutting down RS

[xucang]

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xucang pushed a commit to branch branch-1
in repository https://gitbox.apache.org/repos/asf/hbase.git


The following commit(s) were added to refs/heads/branch-1 by this push:
     new 322ea54  HBASE-21740 Fix NPE while shutting down RS
322ea54 is described below

commit 322ea5456f333700bd05630347f504f94ce1fbf3
Author: lujie <lu...@ict.ac.cn>
AuthorDate: Mon Feb 18 02:53:19 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 258f68e..78dc66d 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
@@ -1844,7 +1844,9 @@ 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);
+    }
 
     if (this.compactionChecker != null) 
choreService.scheduleChore(compactionChecker);
     if (this.periodicFlusher != null) 
choreService.scheduleChore(periodicFlusher);