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Posted to oak-commits@jackrabbit.apache.org by mr...@apache.org on 2015/10/29 14:46:01 UTC
svn commit: r1711252 - in /jackrabbit/oak/branches/1.2: ./
oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java
oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java
Author: mreutegg
Date: Thu Oct 29 13:46:01 2015
New Revision: 1711252
URL: http://svn.apache.org/viewvc?rev=1711252&view=rev
Log:
OAK-3567: Long running query holds TreeLock
Merged revision 1711248 from trunk and fixed issue
Modified:
jackrabbit/oak/branches/1.2/ (props changed)
jackrabbit/oak/branches/1.2/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java
jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java
Propchange: jackrabbit/oak/branches/1.2/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Thu Oct 29 13:46:01 2015
@@ -1,3 +1,3 @@
/jackrabbit/oak/branches/1.0:1665962
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/jackrabbit/trunk:1345480
Modified: jackrabbit/oak/branches/1.2/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.2/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java?rev=1711252&r1=1711251&r2=1711252&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.2/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java (original)
+++ jackrabbit/oak/branches/1.2/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java Thu Oct 29 13:46:01 2015
@@ -30,6 +30,7 @@ import java.util.TreeMap;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.regex.Matcher;
@@ -140,6 +141,11 @@ public class MongoDocumentStore implemen
private final Striped<ReadWriteLock> parentLocks = Striped.readWriteLock(64);
/**
+ * Counts how many times {@link TreeLock}s were acquired.
+ */
+ private final AtomicLong lockAcquisitionCounter = new AtomicLong();
+
+ /**
* Comparator for maps with {@link Revision} keys. The maps are ordered
* descending, newest revisions first!
*/
@@ -625,7 +631,7 @@ public class MongoDocumentStore implemen
String parentId = Utils.getParentIdFromLowerLimit(fromKey);
long lockTime = -1;
final long start = PERFLOG.start();
- TreeLock lock = acquireExclusive(parentId != null ? parentId : "");
+ TreeLock lock = withLock ? acquireExclusive(parentId != null ? parentId : "") : null;
try {
if (start != -1) {
lockTime = System.currentTimeMillis() - start;
@@ -1400,6 +1406,7 @@ public class MongoDocumentStore implemen
* @return the acquired lock for the given key.
*/
private TreeLock acquire(String key) {
+ lockAcquisitionCounter.incrementAndGet();
return TreeLock.shared(parentLocks.get(getParentId(key)), locks.get(key));
}
@@ -1411,6 +1418,7 @@ public class MongoDocumentStore implemen
* @return the acquired lock for the given parent key.
*/
private TreeLock acquireExclusive(String parentKey) {
+ lockAcquisitionCounter.incrementAndGet();
return TreeLock.exclusive(parentLocks.get(parentKey));
}
@@ -1455,6 +1463,10 @@ public class MongoDocumentStore implemen
this.maxLockedQueryTimeMS = maxLockedQueryTimeMS;
}
+ long getLockAcquisitionCount() {
+ return lockAcquisitionCounter.get();
+ }
+
private final static class TreeLock {
private final Lock parentLock;
Modified: jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java?rev=1711252&r1=1711251&r2=1711252&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java (original)
+++ jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStoreTest.java Thu Oct 29 13:46:01 2015
@@ -32,6 +32,7 @@ import org.apache.jackrabbit.oak.plugins
import org.apache.jackrabbit.oak.plugins.document.util.Utils;
import org.junit.Test;
+import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@@ -66,10 +67,12 @@ public class MongoDocumentStoreTest exte
}
mk.commit("/", sb.toString(), null, null);
store.queriesWithoutLock.set(0);
+ long lockCount = store.getLockAcquisitionCount();
List<NodeDocument> docs = store.query(Collection.NODES, fromId, toId,
"foo", System.currentTimeMillis(), Integer.MAX_VALUE);
assertTrue(docs.isEmpty());
if (store.queriesWithoutLock.get() > 0) {
+ assertEquals(lockCount + 1, store.getLockAcquisitionCount());
return;
}
}