HBASE-22284 optimization StringBuilder.append of AbstractMemStore.toString apache#182

WenFeiYi · Apache9 · commit 0be9bc861cc2 · 2019-06-20T21:44:38.000+08:00
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AbstractMemStore.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AbstractMemStore.java
@@ -260,7 +260,7 @@ public String toString() {
     int i = 1;
     try {
       for (Segment segment : getSegments()) {
-        buf.append("Segment (" + i + ") " + segment.toString() + "; ");
+        buf.append("Segment (").append(i).append(") ").append(segment.toString()).append("; ");
         i++;
       }
     } catch (IOException e){

Original file line number	Diff line number	Diff line change
`@@ -260,7 +260,7 @@ public String toString() {`
`260`	`260`	`int i = 1;`
`261`	`261`	`try {`
`262`	`262`	`for (Segment segment : getSegments()) {`
`263`		`- buf.append("Segment (" + i + ") " + segment.toString() + "; ");`
	`263`	`+ buf.append("Segment (").append(i).append(") ").append(segment.toString()).append("; ");`
`264`	`264`	`i++;`
`265`	`265`	`}`
`266`	`266`	`} catch (IOException e){`