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Posted to oak-commits@jackrabbit.apache.org by mr...@apache.org on 2014/12/10 15:39:51 UTC

svn commit: r1644432 - in /jackrabbit/oak/branches/1.0: ./ oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java

Author: mreutegg
Date: Wed Dec 10 14:39:51 2014
New Revision: 1644432

URL: http://svn.apache.org/r1644432
Log:
OAK-2336: NodeDocument.getNodeAtRevision() may read too many revisions

Merged revision 1644407 from trunk with some changes from OAK-1794 (1608731)

Modified:
    jackrabbit/oak/branches/1.0/   (props changed)
    jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java
    jackrabbit/oak/branches/1.0/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java

Propchange: jackrabbit/oak/branches/1.0/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Dec 10 14:39:51 2014
@@ -1,2 +1,2 @@
-/jackrabbit/oak/trunk:1584578,1584602,1584614,1584616,1584709,1584781,1584937,1585297,1585304-1585305,1585420,1585424,1585427,1585448,1585465,1585468,1585486,1585497,1585509,1585647,1585655-1585656,1585661,1585665-1585666,1585669-1585670,1585673,1585680,1585719,1585763,1585770,1585896,1585904,1585907,1585940,1585949,1585951,1585956,1585962,1586287,1586320,1586364,1586372,1586655,1586836,1587130,1587224,1587399,1587408,1587472,1587485,1587488,1587538,1587580,1587807,1588033,1588042,1588046,1588066,1588201,1589025,1589101,1589137,1589141,1589263,1589440,1589442,1589484,1589488,1589661,1589664,1589682,1589708,1589741,1589748,1589789,1589794,1589850,1589864,1590628,1590660,1590684,1590697,1590701,1590980,1590988,1591101,1591226,1591229,1591293,1591314,1591317,1591362,1591374,1591381,1591438,1591467,1591552,1591704,1591713,1591715,1591723,1591874,1592487,1592512,1592658,1592665,1592677,1592742,1592744,1592787,1592809,1592955,1593036,1593048,1593061,1593133,1593210-1593211,1593231,1593245
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 2,1644016,1644106,1644366,1644407
 /jackrabbit/trunk:1345480

Modified: jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java?rev=1644432&r1=1644431&r2=1644432&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java (original)
+++ jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/NodeDocument.java Wed Dec 10 14:39:51 2014
@@ -616,12 +616,7 @@ public final class NodeDocument extends
     public String getCommitRootPath(Revision revision) {
         String depth = getCommitRootDepth(revision);
         if (depth != null) {
-            if (depth.equals("0")) {
-                return "/";
-            }
-            String p = getPath();
-            return PathUtils.getAncestorPath(p,
-                    PathUtils.getDepth(p) - Integer.parseInt(depth));
+            return getPathAtDepth(depth);
         }
         return null;
     }
@@ -774,7 +769,7 @@ public final class NodeDocument extends
             // check if there may be more recent values in a previous document
             if (value != null && !getPreviousRanges().isEmpty()) {
                 Revision newest = getLocalMap(key).firstKey();
-                if (!value.revision.equals(newest)) {
+                if (isRevisionNewer(nodeStore, newest, value.revision)) {
                     // not reading the most recent value, we may need to
                     // consider previous documents as well
                     Revision newestPrev = getPreviousRanges().firstKey();
@@ -1408,20 +1403,49 @@ public final class NodeDocument extends
      */
     @CheckForNull
     private NodeDocument getCommitRoot(@Nonnull Revision rev) {
-        if (containsRevision(rev)) {
+        // check local revisions and commitRoot first
+        if (getLocalRevisions().containsKey(rev)) {
             return this;
         }
-        String commitRootPath = getCommitRootPath(rev);
-        if (commitRootPath == null) {
-            // may happen for a commit root document, which hasn't been
-            // updated with the commit revision yet
-            return null;
+        String commitRootPath;
+        String depth = getLocalCommitRoot().get(rev);
+        if (depth != null) {
+            commitRootPath = getPathAtDepth(depth);
+        } else {
+            // fall back to complete check, including previous documents
+            if (containsRevision(rev)) {
+                return this;
+            }
+            commitRootPath = getCommitRootPath(rev);
+            if (commitRootPath == null) {
+                // may happen for a commit root document, which hasn't been
+                // updated with the commit revision yet
+                return null;
+            }
         }
         // get root of commit
         return store.find(Collection.NODES, Utils.getIdFromPath(commitRootPath));
     }
 
     /**
+     * Returns the path at the given {@code depth} based on the path of this
+     * document.
+     *
+     * @param depth the depth as a string.
+     * @return the path.
+     * @throws NumberFormatException if {@code depth} cannot be parsed as an
+     *              integer.
+     */
+    @Nonnull
+    private String getPathAtDepth(@Nonnull String depth) {
+        if (checkNotNull(depth).equals("0")) {
+            return "/";
+        }
+        String p = getPath();
+        return PathUtils.getAncestorPath(p, PathUtils.getDepth(p) - Integer.parseInt(depth));
+    }
+
+    /**
      * Returns the commit root depth for the given revision. This method also
      * takes previous documents into account.
      *

Modified: jackrabbit/oak/branches/1.0/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.0/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java?rev=1644432&r1=1644431&r2=1644432&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.0/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java (original)
+++ jackrabbit/oak/branches/1.0/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java Wed Dec 10 14:39:51 2014
@@ -22,6 +22,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.SortedSet;
 import java.util.TreeSet;
 import java.util.concurrent.Semaphore;
@@ -55,6 +56,7 @@ import org.junit.After;
 import org.junit.Test;
 
 import com.google.common.collect.Iterables;
+import com.google.common.collect.Sets;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 import static org.apache.jackrabbit.oak.api.CommitFailedException.CONSTRAINT;
@@ -700,6 +702,59 @@ public class DocumentNodeStoreTest {
         store1.dispose();
     }
 
+    // OAK-2336
+    @Test
+    public void readBranchCommit() throws Exception {
+        final Set<String> readSet = Sets.newHashSet();
+        DocumentStore store = new MemoryDocumentStore() {
+            @Override
+            public <T extends Document> T find(Collection<T> collection,
+                                               String key) {
+                readSet.add(key);
+                return super.find(collection, key);
+            }
+        };
+        DocumentNodeStore ns = new DocumentMK.Builder()
+                .setDocumentStore(store).setAsyncDelay(0).getNodeStore();
+        NodeBuilder builder = ns.getRoot().builder();
+        String testId = Utils.getIdFromPath("/test");
+        NodeBuilder test = builder.child("test");
+        test.setProperty("p", "value");
+        // force creation of branch
+        int q = 0;
+        while (store.find(NODES, testId) == null) {
+            test.setProperty("q", q++);
+        }
+        merge(ns, builder);
+
+        // commit enough changes for a previous doc
+        for (int i = 0; i < NUM_REVS_THRESHOLD; i++) {
+            builder = ns.getRoot().builder();
+            builder.child("test").setProperty("q", i);
+            merge(ns, builder);
+        }
+        // trigger split
+        ns.runBackgroundOperations();
+
+        NodeDocument doc = store.find(NODES, Utils.getIdFromPath("/test"));
+        assertNotNull(doc);
+
+        readSet.clear();
+
+        // must not access previous document of /test
+        doc.getNodeAtRevision(ns, ns.getHeadRevision(), null);
+        for (String id : Sets.newHashSet(readSet)) {
+            doc = store.find(NODES, id);
+            assertNotNull(doc);
+            if (doc.isSplitDocument() && !doc.getMainPath().equals("/")) {
+                fail("must not access previous document: " + id);
+            }
+        }
+
+        ns.dispose();
+    }
+
+
     private static void merge(NodeStore store, NodeBuilder root)
             throws CommitFailedException {
         store.merge(root, EmptyHook.INSTANCE, CommitInfo.EMPTY);