Author: jdcryans
Date: Tue Nov 3 01:50:34 2009
New Revision: 832259
URL: http://svn.apache.org/viewvc?rev=832259&view=rev
Log:
HBASE-1944 Add a "deferred log flush" attribute to HTD
caching the boolean
Modified:
hadoop/hbase/trunk/src/java/org/apache/hadoop/hbase/HTableDescriptor.java
Modified:
hadoop/hbase/trunk/src/java/org/apache/hadoop/hbase/HTableDescriptor.java
URL:
http://svn.apache.org/viewvc/hadoop/hbase/trunk/src/java/org/apache/hadoop/hbase/HTableDescriptor.java?rev=832259&r1=832258&r2=832259&view=diff
==============================================================================
--- hadoop/hbase/trunk/src/java/org/apache/hadoop/hbase/HTableDescriptor.java
(original)
+++ hadoop/hbase/trunk/src/java/org/apache/hadoop/hbase/HTableDescriptor.java
Tue Nov 3 01:50:34 2009
@@ -29,6 +29,7 @@
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
+import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
@@ -98,6 +99,7 @@
private volatile Boolean meta = null;
private volatile Boolean root = null;
+ private Boolean isDeferredLog = null;
// Key is hash of the family name.
public final Map<byte [], HColumnDescriptor> families =
@@ -374,8 +376,12 @@
/**
* @return true if that table's log is hflush by other means
*/
- public boolean isDeferredLogFlush() {
- return isSomething(DEFERRED_LOG_FLUSH_KEY, DEFAULT_DEFERRED_LOG_FLUSH);
+ public synchronized boolean isDeferredLogFlush() {
+ if(this.isDeferredLog == null) {
+ this.isDeferredLog =
+ isSomething(DEFERRED_LOG_FLUSH_KEY, DEFAULT_DEFERRED_LOG_FLUSH);
+ }
+ return this.isDeferredLog;
}
/**
