Author: chetanm
Date: Fri Feb 20 08:43:29 2015
New Revision: 1661074
URL: http://svn.apache.org/r1661074
Log:
OAK-2513 - algorithm with O(n!) in mongoMk rebase - not finishing in years
Merging 1661069
Modified:
jackrabbit/oak/branches/1.0/ (props changed)
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/Branch.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 Fri Feb 20 08:43:29 2015
@@ -1,2 +1,2 @@
-/jackrabbit/oak/trunk:1584578,1584602,1584614,1584616,1584709,1584781,1584937,1585297,1585304-1585305,1585420,1585424,1585427,1585448,1585465,1585468,1585486,1585497,1585509,1585647,1585655-1585656,1585661,1585665-1585666,1585669-1585670,1585673,1585680,1585719,1585763,1585770,1585896,1585904,1585907,1585940,1585949,1585951,1585956,1585962-1585963,1586287,1586320,1586364,1586372,1586655,1586836,1587130,1587224,1587399,1587408,1587472,1587485,1587488,1587538,1587580,1587807,1588033,1588042,1588046,1588066,1588201,1589025,1589101,1589137,1589141,1589263,1589440,1589442,1589484,1589488,1589661,1589664,1589682,1589708,1589741,1589748,1589789,1589794,1589850,1589864,1590628,1590660,1590684,1590697,1590701,1590980,1590988,1591101,1591226,1591229,1591293,1591314,1591317,1591362,1591374,1591381,1591438,1591467,1591552,1591704,1591713,1591715,1591723,1591874,1592487,1592512,1592658,1592665,1592677,1592742,1592744,1592787,1592809,1592955,1593036,1593048,1593061,1593133,1593210-1593211,1593231
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+/jackrabbit/oak/trunk:1584578,1584602,1584614,1584616,1584709,1584781,1584937,1585297,1585304-1585305,1585420,1585424,1585427,1585448,1585465,1585468,1585486,1585497,1585509,1585647,1585655-1585656,1585661,1585665-1585666,1585669-1585670,1585673,1585680,1585719,1585763,1585770,1585896,1585904,1585907,1585940,1585949,1585951,1585956,1585962-1585963,1586287,1586320,1586364,1586372,1586655,1586836,1587130,1587224,1587399,1587408,1587472,1587485,1587488,1587538,1587580,1587807,1588033,1588042,1588046,1588066,1588201,1589025,1589101,1589137,1589141,1589263,1589440,1589442,1589484,1589488,1589661,1589664,1589682,1589708,1589741,1589748,1589789,1589794,1589850,1589864,1590628,1590660,1590684,1590697,1590701,1590980,1590988,1591101,1591226,1591229,1591293,1591314,1591317,1591362,1591374,1591381,1591438,1591467,1591552,1591704,1591713,1591715,1591723,1591874,1592487,1592512,1592658,1592665,1592677,1592742,1592744,1592787,1592809,1592955,1593036,1593048,1593061,1593133,1593210-1593211,1593231
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/jackrabbit/trunk:1345480
Modified:
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/Branch.java
URL:
http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/Branch.java?rev=1661074&r1=1661073&r2=1661074&view=diff
==============================================================================
---
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/Branch.java
(original)
+++
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/Branch.java
Fri Feb 20 08:43:29 2015
@@ -25,6 +25,7 @@ import java.lang.ref.WeakReference;
import java.util.Map;
import java.util.NavigableMap;
import java.util.SortedSet;
+import java.util.TreeMap;
import java.util.concurrent.ConcurrentSkipListMap;
import javax.annotation.CheckForNull;
@@ -295,6 +296,8 @@ class Branch {
abstract boolean isModified(String path);
abstract Iterable<String> getModifiedPaths();
+
+ protected abstract boolean isRebase();
}
/**
@@ -330,6 +333,11 @@ class Branch {
return modifications.keySet();
}
+ @Override
+ protected boolean isRebase() {
+ return false;
+ }
+
//------------------< LastRevTracker
>----------------------------------
@Override
@@ -341,6 +349,11 @@ class Branch {
}
modifications.put(path, commit);
}
+
+ @Override
+ public String toString() {
+ return "B (" + modifications.size() + ")";
+ }
}
class RebaseCommit extends BranchCommit {
@@ -350,7 +363,7 @@ class Branch {
RebaseCommit(Revision base, Revision commit,
NavigableMap<Revision, BranchCommit> previous) {
super(base, commit);
- this.previous = Maps.newTreeMap(previous);
+ this.previous = squash(previous);
}
@Override
@@ -371,6 +384,11 @@ class Branch {
}
@Override
+ protected boolean isRebase() {
+ return true;
+ }
+
+ @Override
Iterable<String> getModifiedPaths() {
Iterable<Iterable<String>> paths = transform(previous.values(),
new Function<BranchCommit, Iterable<String>>() {
@@ -382,12 +400,33 @@ class Branch {
return Iterables.concat(paths);
}
+ /**
+ * Filter out the RebaseCommits as they are just container of previous
BranchCommit
+ *
+ * @param previous branch commit history
+ * @return filtered branch history only containing non rebase commits
+ */
+ private NavigableMap<Revision, BranchCommit>
squash(NavigableMap<Revision, BranchCommit> previous) {
+ NavigableMap<Revision, BranchCommit> result = new
TreeMap<Revision, BranchCommit>(previous.comparator());
+ for (Map.Entry<Revision, BranchCommit> e : previous.entrySet()){
+ if (!e.getValue().isRebase()){
+ result.put(e.getKey(), e.getValue());
+ }
+ }
+ return result;
+ }
+
//------------------< LastRevTracker
>----------------------------------
@Override
public void track(String path) {
throw new UnsupportedOperationException("RebaseCommit is
read-only");
}
+
+ @Override
+ public String toString() {
+ return "R (" + previous.size() + ")";
+ }
}
final static class BranchReference extends WeakReference<Object> {
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=1661074&r1=1661073&r2=1661074&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
Fri Feb 20 08:43:29 2015
@@ -34,6 +34,7 @@ import static org.junit.Assert.fail;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
+import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@@ -910,6 +911,61 @@ public class DocumentNodeStoreTest {
store.dispose();
}
+ @Test
+ public void slowRebase() throws Exception {
+ final int NUM_NODES = DocumentRootBuilder.UPDATE_LIMIT / 2;
+ final int NUM_PROPS = 10;
+ final int REBASE_COUNT = 5;
+ final DocumentNodeStore ns = new DocumentMK.Builder().getNodeStore();
+
+ NodeBuilder builder = ns.getRoot().builder();
+ for (int i = 0; i < NUM_NODES / 2; i++) {
+ NodeBuilder c = deepTree(builder.child("n" + i), 5);
+ for (int j = 0; j < NUM_PROPS; j++) {
+ c.setProperty("p" + j, "value");
+ }
+ }
+
+ //1. Prepare a large tree
+ merge(ns, builder);
+
+ builder = ns.getRoot().builder();
+ int[] rebaseCounts = {2,3,1,8,3};
+ for (int r = 0; r < REBASE_COUNT; r++){
+ for (int i = 0; i < NUM_NODES / 2; i++) {
+ NodeBuilder c = deepTree(builder.child("n" + i), 5);
+ for (int j = 0; j < NUM_PROPS; j++) {
+ c.setProperty("q"+ r + "" + j, "value");
+ }
+ }
+
+ //Do multiple rebase for each round of branch commit phase
+ for (int k = 0; k < rebaseCounts[r]; k++){
+ doSomeChange(ns);
+ ns.rebase(builder);
+ }
+ }
+
+ System.out.println("Starting the final merge "+ new Date());
+ merge(ns, builder);
+
+ ns.dispose();
+ }
+
+ private void doSomeChange(NodeStore ns) throws CommitFailedException {
+ NodeBuilder b = ns.getRoot().builder();
+ b.setProperty("count", System.currentTimeMillis());
+ merge(ns, b);
+ }
+
+ private NodeBuilder deepTree(NodeBuilder parent, int depth){
+ NodeBuilder nb = parent;
+ for (int i = depth ; i >= 0; i--){
+ nb = nb.child("c"+i);
+ }
+ return nb;
+ }
+
private static void assertNoPreviousDocs(Set<String> ids) {
for (String id : ids) {
assertFalse("must not read previous document: " +
