svn commit: r1056109 - in /cassandra/branches/cassandra-0.7: CHANGES.txt src/java/org/apache/cassandra/db/Table.java

[jb...@apache.org]

Author: jbellis
Date: Thu Jan  6 22:57:18 2011
New Revision: 1056109

URL: http://svn.apache.org/viewvc?rev=1056109&view=rev
Log:
reduce flush lock contention
patch by Kelvin Kakugawa; reviewed by jbellis for CASSANDRA-1930

Modified:
    cassandra/branches/cassandra-0.7/CHANGES.txt
    cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/db/Table.java

Modified: cassandra/branches/cassandra-0.7/CHANGES.txt
URL: http://svn.apache.org/viewvc/cassandra/branches/cassandra-0.7/CHANGES.txt?rev=1056109&r1=1056108&r2=1056109&view=diff
==============================================================================
--- cassandra/branches/cassandra-0.7/CHANGES.txt (original)
+++ cassandra/branches/cassandra-0.7/CHANGES.txt Thu Jan  6 22:57:18 2011
@@ -13,6 +13,7 @@
  * make read repair behave as expected for ConsistencyLevel > ONE
    (CASSANDRA-982)
  * distributed test harness (CASSANDRA-1859)
+ * reduce flush lock contention (CASSANDRA-1930)
 
 
 0.7.0-dev

Modified: cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/db/Table.java
URL: http://svn.apache.org/viewvc/cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/db/Table.java?rev=1056109&r1=1056108&r2=1056109&view=diff
==============================================================================
--- cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/db/Table.java (original)
+++ cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/db/Table.java Thu Jan  6 22:57:18 2011
@@ -64,7 +64,7 @@ public class Table
      * accesses to CFS.memtable should acquire this for thread safety.
      * Table.maybeSwitchMemtable should aquire the writeLock; see that method for the full explanation.
      */
-    static final ReentrantReadWriteLock flusherLock = new ReentrantReadWriteLock(true);
+    static final ReentrantReadWriteLock flusherLock = new ReentrantReadWriteLock();
 
     // It is possible to call Table.open without a running daemon, so it makes sense to ensure
     // proper directories here as well as in CassandraDaemon.