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Posted to oak-commits@jackrabbit.apache.org by re...@apache.org on 2019/06/26 11:40:20 UTC

svn commit: r1862126 - in /jackrabbit/oak/branches/1.8: ./ oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/ oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/

Author: reschke
Date: Wed Jun 26 11:40:20 2019
New Revision: 1862126

URL: http://svn.apache.org/viewvc?rev=1862126&view=rev
Log:
OAK-7564: Commit fails when forced journal push throws exception (merged r1835056, r1835062 into 1.8)

Modified:
    jackrabbit/oak/branches/1.8/   (props changed)
    jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/Commit.java
    jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java
    jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/MergeCommit.java
    jackrabbit/oak/branches/1.8/oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java

Propchange: jackrabbit/oak/branches/1.8/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Jun 26 11:40:20 2019
@@ -1,4 +1,4 @@
 /jackrabbit/oak/branches/1.0:1665962
 /jackrabbit/oak/branches/1.10:1854524
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 /jackrabbit/trunk:1345480

Modified: jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/Commit.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/Commit.java?rev=1862126&r1=1862125&r2=1862126&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/Commit.java (original)
+++ jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/Commit.java Wed Jun 26 11:40:20 2019
@@ -704,6 +704,25 @@ public class Commit {
     }
 
     /**
+     * Applies the lastRev updates to the {@link LastRevTracker} of the
+     * DocumentNodeStore.
+     *
+     * @param isBranchCommit whether this is a branch commit.
+     */
+    void applyLastRevUpdates(boolean isBranchCommit) {
+        LastRevTracker tracker = nodeStore.createTracker(revision, isBranchCommit);
+        for (String path : modifiedNodes) {
+            UpdateOp op = operations.get(path);
+            // track _lastRev only when path is not for a bundled node state
+            if ((op == null || !hasContentChanges(op) || denotesRoot(path))
+                    && !isBundled(path)) {
+                // track intermediate node and root
+                tracker.track(path);
+            }
+        }
+    }
+
+    /**
      * Apply the changes to the DocumentNodeStore (to update the cache).
      *
      * @param before the revision right before this commit.
@@ -727,7 +746,6 @@ public class Commit {
         Revision rev = isBranchCommit ? revision.asBranchRevision() : revision;
         RevisionVector after = before.update(rev);
         DiffCache.Entry cacheEntry = nodeStore.getDiffCache().newEntry(before, after, true);
-        LastRevTracker tracker = nodeStore.createTracker(revision, isBranchCommit);
         List<String> added = new ArrayList<String>();
         List<String> removed = new ArrayList<String>();
         List<String> changed = new ArrayList<String>();
@@ -749,14 +767,9 @@ public class Commit {
             }
             UpdateOp op = operations.get(path);
 
-            // track _lastRev and apply to cache only when
-            // path is not for a bundled node state
+            // apply to cache only when path is not for a bundled node state
             if (!isBundled(path)) {
                 boolean isNew = op != null && op.isNew();
-                if (op == null || !hasContentChanges(op) || denotesRoot(path)) {
-                    // track intermediate node and root
-                    tracker.track(path);
-                }
                 nodeStore.applyChanges(before, after, rev, path, isNew,
                         added, removed, changed);
             }

Modified: jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java?rev=1862126&r1=1862125&r2=1862126&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java (original)
+++ jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStore.java Wed Jun 26 11:40:20 2019
@@ -948,23 +948,50 @@ public final class DocumentNodeStore
                     public void headOfQueue(@NotNull Revision revision) {
                         // remember before revision
                         RevisionVector before = getHeadRevision();
-                        // apply changes to cache based on before revision
-                        c.applyToCache(before, false);
-                        // track modified paths
-                        changes.modified(c.getModifiedPaths());
-                        changes.readFrom(info);
-                        changes.addChangeSet(getChangeSet(info));
+
                         // update head revision
                         Revision r = c.getRevision();
                         newHead[0] = before.update(r);
-                        if (changes.getNumChangedNodes() >= journalPushThreshold) {
-                            LOG.info("Pushing journal entry at {} as number of changes ({}) have reached {}",
-                                    r, changes.getNumChangedNodes(), journalPushThreshold);
-                            pushJournalEntry(r);
+                        boolean success = false;
+                        boolean cacheUpdated = false;
+                        try {
+                            // apply lastRev updates
+                            c.applyLastRevUpdates(false);
+
+                            // track modified paths
+                            changes.modified(c.getModifiedPaths());
+                            changes.readFrom(info);
+                            changes.addChangeSet(getChangeSet(info));
+
+                            // if we get here all required in-memory changes
+                            // have been applied. The following operations in
+                            // the try block may fail and the commit can still
+                            // be considered successful
+                            success = true;
+
+                            // apply changes to cache, based on before revision
+                            c.applyToCache(before, false);
+                            cacheUpdated = true;
+                            if (changes.getNumChangedNodes() >= journalPushThreshold) {
+                                LOG.info("Pushing journal entry at {} as number of changes ({}) have reached threshold of {}",
+                                        r, changes.getNumChangedNodes(), journalPushThreshold);
+                                pushJournalEntry(r);
+                            }
+                        } catch (Throwable e) {
+                            if (success) {
+                                if (cacheUpdated) {
+                                    LOG.warn("Pushing journal entry at {} failed", revision, e);
+                                } else {
+                                    LOG.warn("Updating caches at {} failed", revision, e);
+                                }
+                            } else {
+                                LOG.error("Applying in-memory changes at {} failed", revision, e);
+                            }
+                        } finally {
+                            setRoot(newHead[0]);
+                            commitQueue.headRevisionChanged();
+                            dispatcher.contentChanged(getRoot(), info);
                         }
-                        setRoot(newHead[0]);
-                        commitQueue.headRevisionChanged();
-                        dispatcher.contentChanged(getRoot(), info);
                     }
                 });
                 return newHead[0];
@@ -974,6 +1001,7 @@ public final class DocumentNodeStore
         } else {
             // branch commit
             try {
+                c.applyLastRevUpdates(isBranch);
                 c.applyToCache(c.getBaseRevision(), isBranch);
                 return c.getBaseRevision().update(c.getRevision().asBranchRevision());
             } finally {
@@ -2589,7 +2617,7 @@ public final class DocumentNodeStore
         }
     }
 
-    private void pushJournalEntry(Revision r) {
+    private void pushJournalEntry(Revision r) throws DocumentStoreException {
         if (!changes.hasChanges()) {
             LOG.debug("Not pushing journal as there are no changes");
         } else if (store.create(JOURNAL, singletonList(changes.asUpdateOp(r)))) {

Modified: jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/MergeCommit.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/MergeCommit.java?rev=1862126&r1=1862125&r2=1862126&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/MergeCommit.java (original)
+++ jackrabbit/oak/branches/1.8/oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/MergeCommit.java Wed Jun 26 11:40:20 2019
@@ -52,9 +52,14 @@ class MergeCommit extends Commit {
     }
 
     @Override
-    public void applyToCache(RevisionVector before, boolean isBranchCommit) {
+    void applyLastRevUpdates(boolean isBranchCommit) {
         // do nothing for a merge commit, only notify node
         // store about merged revisions
         nodeStore.revisionsMerged(branchCommits);
     }
+
+    @Override
+    public void applyToCache(RevisionVector before, boolean isBranchCommit) {
+        // do nothing for a merge commit
+    }
 }

Modified: jackrabbit/oak/branches/1.8/oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.8/oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java?rev=1862126&r1=1862125&r2=1862126&view=diff
==============================================================================
--- jackrabbit/oak/branches/1.8/oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java (original)
+++ jackrabbit/oak/branches/1.8/oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/DocumentNodeStoreTest.java Wed Jun 26 11:40:20 2019
@@ -2945,6 +2945,64 @@ public class DocumentNodeStoreTest {
         assertTrue("Two added paths should have forced flush", numChangedPaths == 0);
     }
 
+    // OAK-7564
+    @Test
+    public void forceJournalFlushWithException() throws Exception {
+        AtomicBoolean failJournalOps = new AtomicBoolean();
+        DocumentStore store = new MemoryDocumentStore() {
+            @Override
+            public <T extends Document> boolean create(Collection<T> collection,
+                                                       List<UpdateOp> updateOps) {
+                if (collection == Collection.JOURNAL && failJournalOps.get()) {
+                    throw new DocumentStoreException("failure");
+                }
+                return super.create(collection, updateOps);
+            }
+        };
+        DocumentNodeStore ns = builderProvider.newBuilder().setAsyncDelay(0)
+                .setDocumentStore(store).getNodeStore();
+        ns.setMaxBackOffMillis(0);
+        ns.setJournalPushThreshold(2);
+
+        NodeBuilder builder = ns.getRoot().builder();
+        builder.child("foo");
+        builder.child("bar");
+        // fail operations that want to create journal documents
+        failJournalOps.set(true);
+        // now two possible outcomes are fine.
+        // Either the merge fails with an exception and the changes
+        // didn't make it to the node store
+        // OR
+        // the merge succeeds and the changes must be visible.
+        boolean success = false;
+        try {
+            merge(ns, builder);
+            success = true;
+        } catch (CommitFailedException e) {
+            // permitted as well
+        } finally {
+            // resume proper journal operations
+            failJournalOps.set(false);
+        }
+        if (success) {
+            // check if the changes are there
+            assertTrue(ns.getRoot().hasChildNode("foo"));
+            assertTrue(ns.getRoot().hasChildNode("bar"));
+        } else {
+            // check changes are not visible and didn't corrupt the
+            // repository. that is, we can add the nodes after enabling
+            // operations again
+            assertFalse(ns.getRoot().hasChildNode("foo"));
+            assertFalse(ns.getRoot().hasChildNode("bar"));
+
+            builder = ns.getRoot().builder();
+            builder.child("foo");
+            builder.child("bar");
+            merge(ns, builder);
+        }
+        ns.runBackgroundOperations();
+    }
+
     @Test
     public void commitRootSameAsModifiedPath() throws Exception{
         WriteCountingStore ws = new WriteCountingStore(true);