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Posted to commits@cassandra.apache.org by br...@apache.org on 2013/06/06 05:16:55 UTC

[1/3] git commit: Revert "More detailed read repair metrics."

Updated Branches:
  refs/heads/trunk b4b30cf87 -> 4c0be33ea


Revert "More detailed read repair metrics."

This reverts commit b4b30cf87cbf3f7957c64f625f0f90d24b43b49c.


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/1c038f50
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/1c038f50
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/1c038f50

Branch: refs/heads/trunk
Commit: 1c038f50446e4ee0da23bb86a032e591e1899265
Parents: b4b30cf
Author: Brandon Williams <br...@apache.org>
Authored: Wed Jun 5 22:10:32 2013 -0500
Committer: Brandon Williams <br...@apache.org>
Committed: Wed Jun 5 22:10:32 2013 -0500

----------------------------------------------------------------------
 .../cassandra/service/AbstractReadExecutor.java    |   11 +----------
 .../org/apache/cassandra/service/StorageProxy.java |    5 +----
 .../cassandra/service/StorageProxyMBean.java       |    2 +-
 3 files changed, 3 insertions(+), 15 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/1c038f50/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/AbstractReadExecutor.java b/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
index f944507..1c7c6f9 100644
--- a/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
+++ b/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
@@ -25,7 +25,6 @@ import org.apache.cassandra.concurrent.Stage;
 import org.apache.cassandra.concurrent.StageManager;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.config.Schema;
-import org.apache.cassandra.config.ReadRepairDecision;
 import org.apache.cassandra.db.ColumnFamilyStore;
 import org.apache.cassandra.db.ConsistencyLevel;
 import org.apache.cassandra.db.ReadCommand;
@@ -34,7 +33,6 @@ import org.apache.cassandra.db.Row;
 import org.apache.cassandra.db.Table;
 import org.apache.cassandra.exceptions.ReadTimeoutException;
 import org.apache.cassandra.exceptions.UnavailableException;
-import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.MessageOut;
 import org.apache.cassandra.net.MessagingService;
 import org.apache.cassandra.service.StorageProxy.LocalReadRunnable;
@@ -127,14 +125,7 @@ public abstract class AbstractReadExecutor
         Table table = Table.open(command.table);
         List<InetAddress> allReplicas = StorageProxy.getLiveSortedEndpoints(table, command.key);
         CFMetaData metaData = Schema.instance.getCFMetaData(command.table, command.cfName);
-
-        ReadRepairDecision rrDecision = metaData.newReadRepairDecision();
-         
-        if (rrDecision != ReadRepairDecision.NONE) {
-            ReadRepairMetrics.attempted.mark();
-        }
-
-        List<InetAddress> queryTargets = consistency_level.filterForQuery(table, allReplicas, rrDecision);
+        List<InetAddress> queryTargets = consistency_level.filterForQuery(table, allReplicas, metaData.newReadRepairDecision());
 
         if (StorageService.instance.isClientMode())
         {

http://git-wip-us.apache.org/repos/asf/cassandra/blob/1c038f50/src/java/org/apache/cassandra/service/StorageProxy.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxy.java b/src/java/org/apache/cassandra/service/StorageProxy.java
index 62e4d86..852e8ca 100644
--- a/src/java/org/apache/cassandra/service/StorageProxy.java
+++ b/src/java/org/apache/cassandra/service/StorageProxy.java
@@ -1247,6 +1247,7 @@ public class StorageProxy implements StorageProxyMBean
                     logger.trace("Digest mismatch: {}", ex);
                     
                     ReadRepairMetrics.repairedBlocking.mark();
+                    
                     // Do a full data read to resolve the correct response (and repair node that need be)
                     RowDataResolver resolver = new RowDataResolver(exec.command.table, exec.command.key, exec.command.filter());
                     ReadCallback<ReadResponse, Row> repairHandler = exec.handler.withNewResolver(resolver);
@@ -1990,10 +1991,6 @@ public class StorageProxy implements StorageProxyMBean
     public Long getTruncateRpcTimeout() { return DatabaseDescriptor.getTruncateRpcTimeout(); }
     public void setTruncateRpcTimeout(Long timeoutInMillis) { DatabaseDescriptor.setTruncateRpcTimeout(timeoutInMillis); }
     public void reloadTriggerClass() { TriggerExecutor.instance.reloadClasses(); }
-<<<<<<< HEAD
-=======
-
->>>>>>> More detailed read repair metrics.
     
     public long getReadRepairAttempted() {
         return ReadRepairMetrics.attempted.count();

http://git-wip-us.apache.org/repos/asf/cassandra/blob/1c038f50/src/java/org/apache/cassandra/service/StorageProxyMBean.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxyMBean.java b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
index 32fa1be..3cb4f17 100644
--- a/src/java/org/apache/cassandra/service/StorageProxyMBean.java
+++ b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
@@ -92,7 +92,7 @@ public interface StorageProxyMBean
     public void setTruncateRpcTimeout(Long timeoutInMillis);
 
     public void reloadTriggerClass();
-
+    
     public long getReadRepairAttempted();
     public long getReadRepairRepairedBlocking();
     public long getReadRepairRepairedBackground();


[2/3] git commit: Revert "More detailed read repair metrics."

Posted by br...@apache.org.
Revert "More detailed read repair metrics."

This reverts commit 6193fefbf7d92c0b909dccf5a2519b9266983091.


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/a5c04842
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/a5c04842
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/a5c04842

Branch: refs/heads/trunk
Commit: a5c04842ab68643e76926ff21da640b116339dc8
Parents: 1c038f5
Author: Brandon Williams <br...@apache.org>
Authored: Wed Jun 5 22:10:53 2013 -0500
Committer: Brandon Williams <br...@apache.org>
Committed: Wed Jun 5 22:10:53 2013 -0500

----------------------------------------------------------------------
 CHANGES.txt                                        |    1 -
 .../cassandra/metrics/ReadRepairMetrics.java       |   25 -----
 .../org/apache/cassandra/service/ReadCallback.java |    5 +-
 .../org/apache/cassandra/service/StorageProxy.java |   72 ---------------
 .../cassandra/service/StorageProxyMBean.java       |    6 -
 src/java/org/apache/cassandra/tools/NodeCmd.java   |    2 -
 src/java/org/apache/cassandra/tools/NodeProbe.java |   15 ---
 7 files changed, 1 insertions(+), 125 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index 4b84bdf..04122b9 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -78,7 +78,6 @@
  * cqlsh: fix COPY FROM with ReversedType (CASSANDRA-5610)
  * Allow creating CUSTOM indexes on collections (CASSANDRA-5615)
  * Evaluate now() function at execution time (CASSANDRA-5616)
- * Expose detailed read repair metrics (CASSANDRA-5618)
 Merged from 1.1:
  * Remove buggy thrift max message length option (CASSANDRA-5529)
  * Fix NPE in Pig's widerow mode (CASSANDRA-5488)

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java b/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
deleted file mode 100644
index 3f48fee..0000000
--- a/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package org.apache.cassandra.metrics;
-
-import java.util.concurrent.TimeUnit;
-
-import com.yammer.metrics.Metrics;
-import com.yammer.metrics.core.Counter;
-import com.yammer.metrics.core.Gauge;
-import com.yammer.metrics.core.Meter;
-import com.yammer.metrics.core.MetricName;
-import com.yammer.metrics.util.RatioGauge;
-
-/**
- * Metrics related to Read Repair.
- */
-public class ReadRepairMetrics {
-    public static final String GROUP_NAME = "org.apache.cassandra.metrics";
-    public static final String TYPE_NAME = "ReadRepair";
-    
-    public static final Meter repairedBlocking =
-            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "RepairedBlocking"), "RepairedBlocking", TimeUnit.SECONDS);
-    public static final Meter repairedBackground =
-            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "RepairedBackground"), "RepairedBackground", TimeUnit.SECONDS);
-    public static final Meter attempted = 
-            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "Attempted"), "Attempted", TimeUnit.SECONDS);
-}

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/service/ReadCallback.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/ReadCallback.java b/src/java/org/apache/cassandra/service/ReadCallback.java
index fe7f4d7..79e15b1 100644
--- a/src/java/org/apache/cassandra/service/ReadCallback.java
+++ b/src/java/org/apache/cassandra/service/ReadCallback.java
@@ -34,7 +34,6 @@ import org.apache.cassandra.db.ReadCommand;
 import org.apache.cassandra.db.Table;
 import org.apache.cassandra.exceptions.ReadTimeoutException;
 import org.apache.cassandra.exceptions.UnavailableException;
-import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.IAsyncCallback;
 import org.apache.cassandra.net.MessageIn;
 import org.apache.cassandra.net.MessageOut;
@@ -182,9 +181,7 @@ public class ReadCallback<TMessage, TResolved> implements IAsyncCallback<TMessag
 
                 if (logger.isDebugEnabled())
                     logger.debug("Digest mismatch:", e);
-                
-                ReadRepairMetrics.repairedBackground.mark();
-                
+
                 ReadCommand readCommand = (ReadCommand) command;
                 final RowDataResolver repairResolver = new RowDataResolver(readCommand.table, readCommand.key, readCommand.filter());
                 AsyncRepairCallback repairHandler = new AsyncRepairCallback(repairResolver, endpoints.size());

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/service/StorageProxy.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxy.java b/src/java/org/apache/cassandra/service/StorageProxy.java
index 852e8ca..3da923b 100644
--- a/src/java/org/apache/cassandra/service/StorageProxy.java
+++ b/src/java/org/apache/cassandra/service/StorageProxy.java
@@ -39,7 +39,6 @@ import org.apache.cassandra.concurrent.Stage;
 import org.apache.cassandra.concurrent.StageManager;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.config.DatabaseDescriptor;
-import org.apache.cassandra.config.ReadRepairDecision;
 import org.apache.cassandra.config.Schema;
 import org.apache.cassandra.db.*;
 import org.apache.cassandra.db.Table;
@@ -60,7 +59,6 @@ import org.apache.cassandra.locator.AbstractReplicationStrategy;
 import org.apache.cassandra.locator.IEndpointSnitch;
 import org.apache.cassandra.locator.TokenMetadata;
 import org.apache.cassandra.metrics.ClientRequestMetrics;
-import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.*;
 import org.apache.cassandra.service.paxos.*;
 import org.apache.cassandra.tracing.Tracing;
@@ -1163,64 +1161,9 @@ public class StorageProxy implements StorageProxyMBean
                 assert !command.isDigestQuery();
                 logger.trace("Command/ConsistencyLevel is {}/{}", command, consistency_level);
 
-<<<<<<< HEAD
                 AbstractReadExecutor exec = AbstractReadExecutor.getReadExecutor(command, consistency_level);
                 exec.executeAsync();
                 readExecutors[i] = exec;
-=======
-                List<InetAddress> endpoints = getLiveSortedEndpoints(table, command.key);
-                CFMetaData cfm = Schema.instance.getCFMetaData(command.getKeyspace(), command.getColumnFamilyName());
-
-                ReadRepairDecision rrDecision = cfm.newReadRepairDecision();
-                endpoints = consistency_level.filterForQuery(table, endpoints, rrDecision);
-                
-                if (rrDecision != ReadRepairDecision.NONE) {
-                    ReadRepairMetrics.attempted.mark();
-                }
-
-                RowDigestResolver resolver = new RowDigestResolver(command.table, command.key);
-                ReadCallback<ReadResponse, Row> handler = new ReadCallback(resolver, consistency_level, command, endpoints);
-                handler.assureSufficientLiveNodes();
-                assert !endpoints.isEmpty();
-                readCallbacks[i] = handler;
-
-                // The data-request message is sent to dataPoint, the node that will actually get the data for us
-                InetAddress dataPoint = endpoints.get(0);
-                if (dataPoint.equals(FBUtilities.getBroadcastAddress()) && OPTIMIZE_LOCAL_REQUESTS)
-                {
-                    logger.trace("reading data locally");
-                    StageManager.getStage(Stage.READ).execute(new LocalReadRunnable(command, handler));
-                }
-                else
-                {
-                    logger.trace("reading data from {}", dataPoint);
-                    MessagingService.instance().sendRR(command.createMessage(), dataPoint, handler);
-                }
-
-                if (endpoints.size() == 1)
-                    continue;
-
-                // send the other endpoints a digest request
-                ReadCommand digestCommand = command.copy();
-                digestCommand.setDigestQuery(true);
-                MessageOut message = null;
-                for (InetAddress digestPoint : endpoints.subList(1, endpoints.size()))
-                {
-                    if (digestPoint.equals(FBUtilities.getBroadcastAddress()) && OPTIMIZE_LOCAL_REQUESTS)
-                    {
-                        logger.trace("reading digest locally");
-                        StageManager.getStage(Stage.READ).execute(new LocalReadRunnable(digestCommand, handler));
-                    }
-                    else
-                    {
-                        logger.trace("reading digest from {}", digestPoint);
-                        // (We lazy-construct the digest Message object since it may not be necessary if we
-                        // are doing a local digest read, or no digest reads at all.)
-                        if (message == null)
-                            message = digestCommand.createMessage();
-                        MessagingService.instance().sendRR(message, digestPoint, handler);
-                    }
-                }
             }
 
             for (AbstractReadExecutor exec: readExecutors)
@@ -1245,9 +1188,6 @@ public class StorageProxy implements StorageProxyMBean
                 catch (DigestMismatchException ex)
                 {
                     logger.trace("Digest mismatch: {}", ex);
-                    
-                    ReadRepairMetrics.repairedBlocking.mark();
-                    
                     // Do a full data read to resolve the correct response (and repair node that need be)
                     RowDataResolver resolver = new RowDataResolver(exec.command.table, exec.command.key, exec.command.filter());
                     ReadCallback<ReadResponse, Row> repairHandler = exec.handler.withNewResolver(resolver);
@@ -1991,16 +1931,4 @@ public class StorageProxy implements StorageProxyMBean
     public Long getTruncateRpcTimeout() { return DatabaseDescriptor.getTruncateRpcTimeout(); }
     public void setTruncateRpcTimeout(Long timeoutInMillis) { DatabaseDescriptor.setTruncateRpcTimeout(timeoutInMillis); }
     public void reloadTriggerClass() { TriggerExecutor.instance.reloadClasses(); }
-    
-    public long getReadRepairAttempted() {
-        return ReadRepairMetrics.attempted.count();
-    }
-    
-    public long getReadRepairRepairedBlocking() {
-        return ReadRepairMetrics.repairedBlocking.count();
-    }
-    
-    public long getReadRepairRepairedBackground() {
-        return ReadRepairMetrics.repairedBackground.count();
-    }
 }

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/service/StorageProxyMBean.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxyMBean.java b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
index 3cb4f17..f482fc7 100644
--- a/src/java/org/apache/cassandra/service/StorageProxyMBean.java
+++ b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
@@ -17,8 +17,6 @@
  */
 package org.apache.cassandra.service;
 
-import org.apache.cassandra.metrics.ReadRepairMetrics;
-
 public interface StorageProxyMBean
 {
     /**
@@ -92,8 +90,4 @@ public interface StorageProxyMBean
     public void setTruncateRpcTimeout(Long timeoutInMillis);
 
     public void reloadTriggerClass();
-    
-    public long getReadRepairAttempted();
-    public long getReadRepairRepairedBlocking();
-    public long getReadRepairRepairedBackground();
 }

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/tools/NodeCmd.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeCmd.java b/src/java/org/apache/cassandra/tools/NodeCmd.java
index 9f524fc..ca81857 100644
--- a/src/java/org/apache/cassandra/tools/NodeCmd.java
+++ b/src/java/org/apache/cassandra/tools/NodeCmd.java
@@ -665,8 +665,6 @@ public class NodeCmd
                 outs.printf("   Error retrieving file data for %s%n", host);
             }
         }
-        
-        outs.printf("Read Repair Statistics:%nAttempted: %d%nMismatch (Blocking): %d%nMismatch (Background): %d%n", probe.getReadRepairAttempted(), probe.getReadRepairRepairedBlocking(), probe.getReadRepairRepairedBackground());
 
         MessagingServiceMBean ms = probe.msProxy;
         outs.printf("%-25s", "Pool Name");

http://git-wip-us.apache.org/repos/asf/cassandra/blob/a5c04842/src/java/org/apache/cassandra/tools/NodeProbe.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeProbe.java b/src/java/org/apache/cassandra/tools/NodeProbe.java
index af94d14..31df3b9 100644
--- a/src/java/org/apache/cassandra/tools/NodeProbe.java
+++ b/src/java/org/apache/cassandra/tools/NodeProbe.java
@@ -828,21 +828,6 @@ public class NodeProbe
     {
         return failed;
     }
-    
-    public long getReadRepairAttempted()
-    {
-        return spProxy.getReadRepairAttempted();
-    }
-    
-    public long getReadRepairRepairedBlocking()
-    {
-        return spProxy.getReadRepairRepairedBlocking();
-    }
-    
-    public long getReadRepairRepairedBackground()
-    {
-        return spProxy.getReadRepairRepairedBackground();
-    }
 }
 
 class ColumnFamilyStoreMBeanIterator implements Iterator<Map.Entry<String, ColumnFamilyStoreMBean>>


[3/3] git commit: Fix broken rebase

Posted by br...@apache.org.
Fix broken rebase


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/4c0be33e
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/4c0be33e
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/4c0be33e

Branch: refs/heads/trunk
Commit: 4c0be33ea00d292557ce76ced241df84e6582c9e
Parents: a5c0484
Author: Brandon Williams <br...@apache.org>
Authored: Wed Jun 5 22:12:35 2013 -0500
Committer: Brandon Williams <br...@apache.org>
Committed: Wed Jun 5 22:12:35 2013 -0500

----------------------------------------------------------------------
 .../cassandra/metrics/ReadRepairMetrics.java       |   25 +++++++++++++++
 .../cassandra/service/AbstractReadExecutor.java    |   11 ++++++-
 .../org/apache/cassandra/service/ReadCallback.java |    5 ++-
 .../org/apache/cassandra/service/StorageProxy.java |   17 ++++++++++
 .../cassandra/service/StorageProxyMBean.java       |    4 ++
 src/java/org/apache/cassandra/tools/NodeCmd.java   |    2 +
 src/java/org/apache/cassandra/tools/NodeProbe.java |   15 +++++++++
 7 files changed, 77 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java b/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
new file mode 100644
index 0000000..3f48fee
--- /dev/null
+++ b/src/java/org/apache/cassandra/metrics/ReadRepairMetrics.java
@@ -0,0 +1,25 @@
+package org.apache.cassandra.metrics;
+
+import java.util.concurrent.TimeUnit;
+
+import com.yammer.metrics.Metrics;
+import com.yammer.metrics.core.Counter;
+import com.yammer.metrics.core.Gauge;
+import com.yammer.metrics.core.Meter;
+import com.yammer.metrics.core.MetricName;
+import com.yammer.metrics.util.RatioGauge;
+
+/**
+ * Metrics related to Read Repair.
+ */
+public class ReadRepairMetrics {
+    public static final String GROUP_NAME = "org.apache.cassandra.metrics";
+    public static final String TYPE_NAME = "ReadRepair";
+    
+    public static final Meter repairedBlocking =
+            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "RepairedBlocking"), "RepairedBlocking", TimeUnit.SECONDS);
+    public static final Meter repairedBackground =
+            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "RepairedBackground"), "RepairedBackground", TimeUnit.SECONDS);
+    public static final Meter attempted = 
+            Metrics.newMeter(new MetricName(GROUP_NAME, TYPE_NAME, "Attempted"), "Attempted", TimeUnit.SECONDS);
+}

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/AbstractReadExecutor.java b/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
index 1c7c6f9..f944507 100644
--- a/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
+++ b/src/java/org/apache/cassandra/service/AbstractReadExecutor.java
@@ -25,6 +25,7 @@ import org.apache.cassandra.concurrent.Stage;
 import org.apache.cassandra.concurrent.StageManager;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.config.Schema;
+import org.apache.cassandra.config.ReadRepairDecision;
 import org.apache.cassandra.db.ColumnFamilyStore;
 import org.apache.cassandra.db.ConsistencyLevel;
 import org.apache.cassandra.db.ReadCommand;
@@ -33,6 +34,7 @@ import org.apache.cassandra.db.Row;
 import org.apache.cassandra.db.Table;
 import org.apache.cassandra.exceptions.ReadTimeoutException;
 import org.apache.cassandra.exceptions.UnavailableException;
+import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.MessageOut;
 import org.apache.cassandra.net.MessagingService;
 import org.apache.cassandra.service.StorageProxy.LocalReadRunnable;
@@ -125,7 +127,14 @@ public abstract class AbstractReadExecutor
         Table table = Table.open(command.table);
         List<InetAddress> allReplicas = StorageProxy.getLiveSortedEndpoints(table, command.key);
         CFMetaData metaData = Schema.instance.getCFMetaData(command.table, command.cfName);
-        List<InetAddress> queryTargets = consistency_level.filterForQuery(table, allReplicas, metaData.newReadRepairDecision());
+
+        ReadRepairDecision rrDecision = metaData.newReadRepairDecision();
+         
+        if (rrDecision != ReadRepairDecision.NONE) {
+            ReadRepairMetrics.attempted.mark();
+        }
+
+        List<InetAddress> queryTargets = consistency_level.filterForQuery(table, allReplicas, rrDecision);
 
         if (StorageService.instance.isClientMode())
         {

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/service/ReadCallback.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/ReadCallback.java b/src/java/org/apache/cassandra/service/ReadCallback.java
index 79e15b1..fe7f4d7 100644
--- a/src/java/org/apache/cassandra/service/ReadCallback.java
+++ b/src/java/org/apache/cassandra/service/ReadCallback.java
@@ -34,6 +34,7 @@ import org.apache.cassandra.db.ReadCommand;
 import org.apache.cassandra.db.Table;
 import org.apache.cassandra.exceptions.ReadTimeoutException;
 import org.apache.cassandra.exceptions.UnavailableException;
+import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.IAsyncCallback;
 import org.apache.cassandra.net.MessageIn;
 import org.apache.cassandra.net.MessageOut;
@@ -181,7 +182,9 @@ public class ReadCallback<TMessage, TResolved> implements IAsyncCallback<TMessag
 
                 if (logger.isDebugEnabled())
                     logger.debug("Digest mismatch:", e);
-
+                
+                ReadRepairMetrics.repairedBackground.mark();
+                
                 ReadCommand readCommand = (ReadCommand) command;
                 final RowDataResolver repairResolver = new RowDataResolver(readCommand.table, readCommand.key, readCommand.filter());
                 AsyncRepairCallback repairHandler = new AsyncRepairCallback(repairResolver, endpoints.size());

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/service/StorageProxy.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxy.java b/src/java/org/apache/cassandra/service/StorageProxy.java
index 3da923b..0203e4b 100644
--- a/src/java/org/apache/cassandra/service/StorageProxy.java
+++ b/src/java/org/apache/cassandra/service/StorageProxy.java
@@ -59,6 +59,7 @@ import org.apache.cassandra.locator.AbstractReplicationStrategy;
 import org.apache.cassandra.locator.IEndpointSnitch;
 import org.apache.cassandra.locator.TokenMetadata;
 import org.apache.cassandra.metrics.ClientRequestMetrics;
+import org.apache.cassandra.metrics.ReadRepairMetrics;
 import org.apache.cassandra.net.*;
 import org.apache.cassandra.service.paxos.*;
 import org.apache.cassandra.tracing.Tracing;
@@ -1188,6 +1189,9 @@ public class StorageProxy implements StorageProxyMBean
                 catch (DigestMismatchException ex)
                 {
                     logger.trace("Digest mismatch: {}", ex);
+                    
+                    ReadRepairMetrics.repairedBlocking.mark();
+
                     // Do a full data read to resolve the correct response (and repair node that need be)
                     RowDataResolver resolver = new RowDataResolver(exec.command.table, exec.command.key, exec.command.filter());
                     ReadCallback<ReadResponse, Row> repairHandler = exec.handler.withNewResolver(resolver);
@@ -1931,4 +1935,17 @@ public class StorageProxy implements StorageProxyMBean
     public Long getTruncateRpcTimeout() { return DatabaseDescriptor.getTruncateRpcTimeout(); }
     public void setTruncateRpcTimeout(Long timeoutInMillis) { DatabaseDescriptor.setTruncateRpcTimeout(timeoutInMillis); }
     public void reloadTriggerClass() { TriggerExecutor.instance.reloadClasses(); }
+
+    
+    public long getReadRepairAttempted() {
+        return ReadRepairMetrics.attempted.count();
+    }
+    
+    public long getReadRepairRepairedBlocking() {
+        return ReadRepairMetrics.repairedBlocking.count();
+    }
+    
+    public long getReadRepairRepairedBackground() {
+        return ReadRepairMetrics.repairedBackground.count();
+    }
 }

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/service/StorageProxyMBean.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageProxyMBean.java b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
index f482fc7..05b9c78 100644
--- a/src/java/org/apache/cassandra/service/StorageProxyMBean.java
+++ b/src/java/org/apache/cassandra/service/StorageProxyMBean.java
@@ -90,4 +90,8 @@ public interface StorageProxyMBean
     public void setTruncateRpcTimeout(Long timeoutInMillis);
 
     public void reloadTriggerClass();
+
+    public long getReadRepairAttempted();
+    public long getReadRepairRepairedBlocking();
+    public long getReadRepairRepairedBackground();
 }

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/tools/NodeCmd.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeCmd.java b/src/java/org/apache/cassandra/tools/NodeCmd.java
index ca81857..9f524fc 100644
--- a/src/java/org/apache/cassandra/tools/NodeCmd.java
+++ b/src/java/org/apache/cassandra/tools/NodeCmd.java
@@ -665,6 +665,8 @@ public class NodeCmd
                 outs.printf("   Error retrieving file data for %s%n", host);
             }
         }
+        
+        outs.printf("Read Repair Statistics:%nAttempted: %d%nMismatch (Blocking): %d%nMismatch (Background): %d%n", probe.getReadRepairAttempted(), probe.getReadRepairRepairedBlocking(), probe.getReadRepairRepairedBackground());
 
         MessagingServiceMBean ms = probe.msProxy;
         outs.printf("%-25s", "Pool Name");

http://git-wip-us.apache.org/repos/asf/cassandra/blob/4c0be33e/src/java/org/apache/cassandra/tools/NodeProbe.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeProbe.java b/src/java/org/apache/cassandra/tools/NodeProbe.java
index 31df3b9..af94d14 100644
--- a/src/java/org/apache/cassandra/tools/NodeProbe.java
+++ b/src/java/org/apache/cassandra/tools/NodeProbe.java
@@ -828,6 +828,21 @@ public class NodeProbe
     {
         return failed;
     }
+    
+    public long getReadRepairAttempted()
+    {
+        return spProxy.getReadRepairAttempted();
+    }
+    
+    public long getReadRepairRepairedBlocking()
+    {
+        return spProxy.getReadRepairRepairedBlocking();
+    }
+    
+    public long getReadRepairRepairedBackground()
+    {
+        return spProxy.getReadRepairRepairedBackground();
+    }
 }
 
 class ColumnFamilyStoreMBeanIterator implements Iterator<Map.Entry<String, ColumnFamilyStoreMBean>>