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Posted to commits@oozie.apache.org by vi...@apache.org on 2013/02/16 03:44:43 UTC

svn commit: r1446838 - in /oozie/branches/hcat-intre: ./ core/ core/src/main/java/org/apache/oozie/dependency/hcat/ core/src/main/resources/ core/src/test/java/org/apache/oozie/service/ core/src/test/resources/

Author: virag
Date: Sat Feb 16 02:44:42 2013
New Revision: 1446838

URL: http://svn.apache.org/r1446838
Log:
OOZIE-1181 Dependency cache with configurations for eviction, ttl and max elements in memory (rohini via virag)

Added:
    oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/EhcacheHCatDependencyCache.java
    oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingActions.java
    oozie/branches/hcat-intre/core/src/main/resources/ehcache-default.xml
    oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerEhcache.java
    oozie/branches/hcat-intre/core/src/test/resources/ehcache.xml
Modified:
    oozie/branches/hcat-intre/core/pom.xml
    oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/SimpleHCatDependencyCache.java
    oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingAction.java
    oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerService.java
    oozie/branches/hcat-intre/pom.xml
    oozie/branches/hcat-intre/release-log.txt

Modified: oozie/branches/hcat-intre/core/pom.xml
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/pom.xml?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/core/pom.xml (original)
+++ oozie/branches/hcat-intre/core/pom.xml Sat Feb 16 02:44:42 2013
@@ -108,6 +108,12 @@
         </dependency>
 
         <dependency>
+            <groupId>net.sf.ehcache</groupId>
+            <artifactId>ehcache-core</artifactId>
+            <scope>compile</scope>
+        </dependency>
+
+        <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <scope>test</scope>

Added: oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/EhcacheHCatDependencyCache.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/EhcacheHCatDependencyCache.java?rev=1446838&view=auto
==============================================================================
--- oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/EhcacheHCatDependencyCache.java (added)
+++ oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/EhcacheHCatDependencyCache.java Sat Feb 16 02:44:42 2013
@@ -0,0 +1,413 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.oozie.dependency.hcat;
+
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+import net.sf.ehcache.CacheException;
+import net.sf.ehcache.CacheManager;
+import net.sf.ehcache.Ehcache;
+import net.sf.ehcache.Element;
+import net.sf.ehcache.event.CacheEventListener;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.oozie.service.HCatAccessorService;
+import org.apache.oozie.service.PartitionDependencyManagerService;
+import org.apache.oozie.service.Services;
+import org.apache.oozie.util.HCatURI;
+import org.apache.oozie.util.XLog;
+
+public class EhcacheHCatDependencyCache implements HCatDependencyCache, CacheEventListener {
+
+    private static XLog LOG = XLog.getLog(EhcacheHCatDependencyCache.class);
+    private static String TABLE_DELIMITER = "#";
+    private static String PARTITION_DELIMITER = ";";
+
+    public static String CONF_CACHE_NAME = PartitionDependencyManagerService.CONF_PREFIX + "cache.ehcache.name";
+
+    private CacheManager cacheManager;
+    /**
+     * Cache with key server#db#table#pk1=val;pk2=val2 and value as WaitingActions (list of
+     * WaitingAction) which is Serializable (for overflowToDisk)
+     */
+    private Ehcache missingCache;
+    /**
+     * Map of server#db#table - sorted part key pattern - count of elements in the cache
+     */
+    private ConcurrentMap<String, Map<String, SettableInteger>> partKeyPatterns;
+    /**
+     * Map of actionIDs and collection of available URIs
+     */
+    private ConcurrentMap<String, Collection<String>> availableDeps;
+
+    @Override
+    public void init(Configuration conf) {
+        String cacheName = conf.get(CONF_CACHE_NAME);
+        URL cacheConfigURL;
+        if (cacheName == null) {
+            cacheConfigURL = this.getClass().getClassLoader().getResource("ehcache-default.xml");
+            cacheName = "dependency-default";
+        }
+        else {
+            cacheConfigURL = this.getClass().getClassLoader().getResource("ehcache.xml");
+        }
+        if (cacheConfigURL == null) {
+            throw new IllegalStateException("ehcache.xml is not found in classpath");
+        }
+        cacheManager = CacheManager.newInstance(cacheConfigURL);
+        missingCache = cacheManager.getCache(cacheName);
+        if (missingCache == null) {
+            throw new IllegalStateException("Cache " + cacheName + " configured in " + CONF_CACHE_NAME
+                    + " is not found");
+        }
+        missingCache.getCacheEventNotificationService().registerListener(this);
+        partKeyPatterns = new ConcurrentHashMap<String, Map<String, SettableInteger>>();
+        availableDeps = new ConcurrentHashMap<String, Collection<String>>();
+    }
+
+    @Override
+    public void addMissingDependency(HCatURI hcatURI, String actionID) {
+        SortedPKV sortedPKV = new SortedPKV(hcatURI.getPartitionMap());
+        String partKeys = sortedPKV.getPartKeys();
+        String missingKey = hcatURI.getServer() + TABLE_DELIMITER + hcatURI.getDb() + TABLE_DELIMITER
+                + hcatURI.getTable() + TABLE_DELIMITER + partKeys + TABLE_DELIMITER + sortedPKV.getPartVals();
+        boolean newlyAdded = true;
+        synchronized (missingCache) {
+            Element element = missingCache.get(missingKey);
+            if (element == null) {
+                WaitingActions waitingActions = new WaitingActions();
+                element = new Element(missingKey, waitingActions);
+                Element exists = missingCache.putIfAbsent(element);
+                if (exists != null) {
+                    newlyAdded = false;
+                    waitingActions = (WaitingActions) exists.getObjectValue();
+                }
+                waitingActions.add(new WaitingAction(actionID, hcatURI.toURIString()));
+            }
+            else {
+                newlyAdded = false;
+                WaitingActions waitingActions = (WaitingActions) element.getObjectValue();
+                waitingActions.add(new WaitingAction(actionID, hcatURI.toURIString()));
+            }
+        }
+        if (newlyAdded) {
+            String tableKey = hcatURI.getServer() + TABLE_DELIMITER + hcatURI.getDb() + TABLE_DELIMITER
+                    + hcatURI.getTable();
+            synchronized (partKeyPatterns) {
+                Map<String, SettableInteger> patternCounts = partKeyPatterns.get(tableKey);
+                if (patternCounts == null) {
+                    patternCounts = new HashMap<String, SettableInteger>();
+                    partKeyPatterns.put(tableKey, patternCounts);
+                }
+                SettableInteger count = patternCounts.get(partKeys);
+                if (count == null) {
+                    patternCounts.put(partKeys, new SettableInteger(1));
+                }
+                else {
+                    count.increment();
+                }
+            }
+        }
+    }
+
+    @Override
+    public boolean removeMissingDependency(HCatURI hcatURI, String actionID) {
+        SortedPKV sortedPKV = new SortedPKV(hcatURI.getPartitionMap());
+        String partKeys = sortedPKV.getPartKeys();
+        String missingKey = hcatURI.getServer() + TABLE_DELIMITER + hcatURI.getDb() + TABLE_DELIMITER
+                + hcatURI.getTable() + TABLE_DELIMITER + partKeys + TABLE_DELIMITER + sortedPKV.getPartVals();
+        boolean decrement = false;
+        boolean removed = false;
+        synchronized (missingCache) {
+            Element element = missingCache.get(missingKey);
+            if (element == null) {
+                LOG.debug("Remove missing dependency - Missing cache entry - uri={0}, actionID={1}",
+                        hcatURI.toURIString(), actionID);
+                return false;
+            }
+            Collection<WaitingAction> waitingActions = ((WaitingActions) element.getObjectValue()).getWaitingActions();
+            WaitingAction wAction = null;
+            for (WaitingAction action : waitingActions) {
+                if (action.getActionID().equals(actionID)) {
+                    wAction = action;
+                }
+            }
+            removed = waitingActions.remove(wAction);
+            if (!removed) {
+                LOG.debug("Remove missing dependency - Missing action ID - uri={0}, actionID={1}",
+                        hcatURI.toURIString(), actionID);
+            }
+            if (waitingActions.isEmpty()) {
+                missingCache.remove(missingKey);
+                decrement = true;
+            }
+        }
+        if (decrement) {
+            String tableKey = hcatURI.getServer() + TABLE_DELIMITER + hcatURI.getDb() + TABLE_DELIMITER
+                    + hcatURI.getTable();
+            decrementPartKeyPatternCount(tableKey, partKeys, hcatURI.toURIString());
+        }
+        return removed;
+    }
+
+    @Override
+    public Collection<String> getWaitingActions(HCatURI hcatURI) {
+        SortedPKV sortedPKV = new SortedPKV(hcatURI.getPartitionMap());
+        String missingKey = hcatURI.getServer() + TABLE_DELIMITER + hcatURI.getDb() + TABLE_DELIMITER
+                + hcatURI.getTable() + TABLE_DELIMITER + sortedPKV.getPartKeys() + TABLE_DELIMITER
+                + sortedPKV.getPartVals();
+        Element element = missingCache.get(missingKey);
+        if (element == null) {
+            return null;
+        }
+        WaitingActions waitingActions = (WaitingActions) element.getObjectValue();
+        Collection<String> actionIDs = new ArrayList<String>();
+        String uriString = hcatURI.getURI().toString();
+        for (WaitingAction action : waitingActions.getWaitingActions()) {
+            if (action.getDependencyURI().equals(uriString)) {
+                actionIDs.add(action.getActionID());
+            }
+        }
+        return actionIDs;
+    }
+
+    @Override
+    public Collection<String> markDependencyAvailable(String server, String db, String table,
+            Map<String, String> partitions) {
+        String tableKey = server + TABLE_DELIMITER + db + TABLE_DELIMITER + table;
+        Map<String, SettableInteger> patternCounts = partKeyPatterns.get(tableKey);
+        if (patternCounts == null) {
+            LOG.warn("Got partition available notification for " + tableKey
+                    + ". Unexpected and should not be listening to topic. Unregistering topic");
+            HCatAccessorService hcatService = Services.get().get(HCatAccessorService.class);
+            hcatService.unregisterFromNotification(server, db, table);
+            return null;
+        }
+        Collection<String> actionsWithAvailDep = new HashSet<String>();
+        StringBuilder partValSB = new StringBuilder();
+        // If partition patterns are date, date;country and date;country;state,
+        // construct the partition values for each pattern and for the matching value in the
+        // missingCache, get the waiting actions and mark it as available.
+        for (Entry<String, SettableInteger> entry : patternCounts.entrySet()) {
+            String[] partKeys = entry.getKey().split(PARTITION_DELIMITER);
+            partValSB.setLength(0);
+            for (String key : partKeys) {
+                partValSB.append(partitions.get(key)).append(PARTITION_DELIMITER);
+            }
+            partValSB.setLength(partValSB.length() - 1);
+            String missingKey = tableKey + TABLE_DELIMITER + entry.getKey() + TABLE_DELIMITER + partValSB.toString();
+            boolean removed = false;
+            Element element = null;
+            synchronized (missingCache) {
+                element = missingCache.get(missingKey);
+                if (element != null) {
+                    missingCache.remove(missingKey);
+                    removed = true;
+                }
+            }
+            if (removed) {
+                decrementPartKeyPatternCount(tableKey, entry.getKey(), missingKey);
+                Collection<WaitingAction> wActions = ((WaitingActions) element.getObjectValue()).getWaitingActions();
+                for (WaitingAction wAction : wActions) {
+                    String actionID = wAction.getActionID();
+                    actionsWithAvailDep.add(actionID);
+                    Collection<String> depURIs = availableDeps.get(actionID);
+                    if (depURIs == null) {
+                        depURIs = new ArrayList<String>();
+                        Collection<String> existing = availableDeps.putIfAbsent(actionID, depURIs);
+                        if (existing != null) {
+                            depURIs = existing;
+                        }
+                    }
+                    synchronized (depURIs) {
+                        depURIs.add(wAction.getDependencyURI());
+                        availableDeps.put(actionID, depURIs);
+                    }
+                }
+            }
+        }
+        return actionsWithAvailDep;
+    }
+
+    @Override
+    public Collection<String> getAvailableDependencyURIs(String actionID) {
+        return availableDeps.get(actionID);
+    }
+
+    @Override
+    public boolean removeAvailableDependencyURIs(String actionID, Collection<String> dependencyURIs) {
+        if (!availableDeps.containsKey(actionID)) {
+            return false;
+        }
+        else {
+            Collection<String> availList = availableDeps.get(actionID);
+            if (!availList.removeAll(dependencyURIs)) {
+                return false;
+            }
+            synchronized (availList) {
+                if (availList.isEmpty()) {
+                    availableDeps.remove(actionID);
+                }
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public void destroy() {
+        availableDeps.clear();
+        cacheManager.shutdown();
+    }
+
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        throw new CloneNotSupportedException();
+    }
+
+    @Override
+    public void dispose() {
+    }
+
+    @Override
+    public void notifyElementExpired(Ehcache cache, Element element) {
+        // Invoked when timeToIdleSeconds or timeToLiveSeconds is met
+        String missingDepKey = (String) element.getObjectKey();
+        LOG.info("Cache entry [{0}] expired", missingDepKey);
+        onExpiryOrEviction(cache, element, missingDepKey);
+    }
+
+    @Override
+    public void notifyElementPut(Ehcache arg0, Element arg1) throws CacheException {
+
+    }
+
+    @Override
+    public void notifyElementRemoved(Ehcache arg0, Element arg1) throws CacheException {
+    }
+
+    @Override
+    public void notifyElementUpdated(Ehcache arg0, Element arg1) throws CacheException {
+    }
+
+    @Override
+    public void notifyRemoveAll(Ehcache arg0) {
+    }
+
+    @Override
+    public void notifyElementEvicted(Ehcache cache, Element element) {
+        // Invoked when maxElementsInMemory is met
+        String missingDepKey = (String) element.getObjectKey();
+        LOG.info("Cache entry [{0}] evicted", missingDepKey);
+        onExpiryOrEviction(cache, element, missingDepKey);
+    }
+
+    private void onExpiryOrEviction(Ehcache cache, Element element, String missingDepKey) {
+        int partValIndex = missingDepKey.lastIndexOf(TABLE_DELIMITER);
+        int partKeyIndex = missingDepKey.lastIndexOf(TABLE_DELIMITER, partValIndex - 1);
+        String tableKey = missingDepKey.substring(0, partKeyIndex);
+        String partKeys = missingDepKey.substring(partKeyIndex + 1, partValIndex);
+        decrementPartKeyPatternCount(tableKey, partKeys, missingDepKey);
+    }
+
+    private void decrementPartKeyPatternCount(String tableKey, String partKeys, String hcatURI) {
+        synchronized (partKeyPatterns) {
+            Map<String, SettableInteger> patternCounts = partKeyPatterns.get(tableKey);
+            if (patternCounts == null) {
+                LOG.debug("Removed dependency - Missing cache entry - uri={0}. "
+                        + "But no corresponding pattern key table entry", hcatURI);
+            }
+            else {
+                SettableInteger count = patternCounts.get(partKeys);
+                if (count == null) {
+                    LOG.debug("Removed dependency - Missing cache entry - uri={0}. "
+                            + "But no corresponding pattern key entry", hcatURI);
+                }
+                else {
+                    count.decrement();
+                    if (count.getValue() == 0) {
+                        patternCounts.remove(partKeys);
+                    }
+                    if (patternCounts.isEmpty()) {
+                        partKeyPatterns.remove(tableKey);
+                        // Close JMS session. Stop listening on topic
+                        HCatAccessorService hcatService = Services.get().get(HCatAccessorService.class);
+                        String[] tableDetails = tableKey.split(TABLE_DELIMITER);
+                        hcatService.unregisterFromNotification(tableDetails[0], tableDetails[1], tableDetails[2]);
+                    }
+                }
+            }
+        }
+    }
+
+    private static class SortedPKV {
+        private StringBuilder partKeys;
+        private StringBuilder partVals;
+
+        public SortedPKV(Map<String, String> partitions) {
+            this.partKeys = new StringBuilder();
+            this.partVals = new StringBuilder();
+            ArrayList<String> keys = new ArrayList<String>(partitions.keySet());
+            Collections.sort(keys);
+            for (String key : keys) {
+                this.partKeys.append(key).append(PARTITION_DELIMITER);
+                this.partVals.append(partitions.get(key)).append(PARTITION_DELIMITER);
+            }
+            this.partKeys.setLength(partKeys.length() - 1);
+            this.partVals.setLength(partVals.length() - 1);
+        }
+
+        public String getPartKeys() {
+            return partKeys.toString();
+        }
+
+        public String getPartVals() {
+            return partVals.toString();
+        }
+
+    }
+
+    private static class SettableInteger {
+        private int value;
+
+        public SettableInteger(int value) {
+            this.value = value;
+        }
+
+        public int getValue() {
+            return value;
+        }
+
+        public void increment() {
+            value++;
+        }
+
+        public void decrement() {
+            value--;
+        }
+    }
+
+}

Modified: oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/SimpleHCatDependencyCache.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/SimpleHCatDependencyCache.java?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/SimpleHCatDependencyCache.java (original)
+++ oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/SimpleHCatDependencyCache.java Sat Feb 16 02:44:42 2013
@@ -180,7 +180,9 @@ public class SimpleHCatDependencyCache i
         Map<String, Map<String, Collection<WaitingAction>>> partKeyPatterns = missingDeps.get(tableKey);
         if (partKeyPatterns == null) {
             LOG.warn("Got partition available notification for " + tableKey
-                    + ". Unexpected and should not be listening to topic. ");
+                    + ". Unexpected and should not be listening to topic. Unregistering topic");
+            HCatAccessorService hcatService = Services.get().get(HCatAccessorService.class);
+            hcatService.unregisterFromNotification(server,db, table);
             return null;
         }
         Collection<String> actionsWithAvailDep = new HashSet<String>();

Modified: oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingAction.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingAction.java?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingAction.java (original)
+++ oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingAction.java Sat Feb 16 02:44:42 2013
@@ -30,10 +30,18 @@ public class WaitingAction implements Se
         this.dependencyURI = dependencyURI;
     }
 
+    /**
+     * Get the action id
+     * @return action id
+     */
     public String getActionID() {
         return actionID;
     }
 
+    /**
+     * Get the dependency uri
+     * @return dependency uri
+     */
     public String getDependencyURI() {
         return dependencyURI;
     }

Added: oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingActions.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingActions.java?rev=1446838&view=auto
==============================================================================
--- oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingActions.java (added)
+++ oozie/branches/hcat-intre/core/src/main/java/org/apache/oozie/dependency/hcat/WaitingActions.java Sat Feb 16 02:44:42 2013
@@ -0,0 +1,49 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.oozie.dependency.hcat;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+
+public class WaitingActions implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+    private ArrayList<WaitingAction> waitingActions;
+
+    public WaitingActions() {
+        waitingActions = new ArrayList<WaitingAction>();
+    }
+
+    /**
+     * Get the list of waiting actions
+     * @return waiting actions
+     */
+    public Collection<WaitingAction> getWaitingActions() {
+        return waitingActions;
+    }
+
+    /**
+     * Add a waiting action
+     * @param waitingAction waiting action
+     */
+    public void add(WaitingAction waitingAction) {
+        waitingActions.add(waitingAction);
+    }
+
+}

Added: oozie/branches/hcat-intre/core/src/main/resources/ehcache-default.xml
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/main/resources/ehcache-default.xml?rev=1446838&view=auto
==============================================================================
--- oozie/branches/hcat-intre/core/src/main/resources/ehcache-default.xml (added)
+++ oozie/branches/hcat-intre/core/src/main/resources/ehcache-default.xml Sat Feb 16 02:44:42 2013
@@ -0,0 +1,10 @@
+<ehcache>
+    <!--  http://svn.codehaus.org/sonar/tags/1.1/sonar-commons/src/main/resources/ehcache.xml -->
+    <diskStore path="java.io.tmpdir"/>
+    <!--  Evict cache entry after 2 days (timeToLiveSeconds) -->
+    <!--  Note: overflowToDisk=true does not work well with timeToIdleSeconds or timeToLiveSeconds.
+          Returns null even for unexpired entries -->
+    <cache name="dependency-default" maxElementsInMemory="60000" eternal="false"
+        overflowToDisk="false" timeToIdleSeconds="0" timeToLiveSeconds="172800"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="1200" />
+</ehcache>
\ No newline at end of file

Added: oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerEhcache.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerEhcache.java?rev=1446838&view=auto
==============================================================================
--- oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerEhcache.java (added)
+++ oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerEhcache.java Sat Feb 16 02:44:42 2013
@@ -0,0 +1,135 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.oozie.service;
+
+import java.util.Collection;
+
+import org.apache.oozie.dependency.hcat.EhcacheHCatDependencyCache;
+import org.apache.oozie.util.HCatURI;
+import org.apache.oozie.util.XLog;
+import org.junit.Test;
+
+public class TestPartitionDependencyManagerEhcache extends TestPartitionDependencyManagerService {
+
+    private static XLog LOG = XLog.getLog(TestPartitionDependencyManagerEhcache.class);
+
+    private void setupServices(String cacheName) throws ServiceException {
+        Services.get().destroy();
+        services = super.setupServicesForHCatalog();
+        services.getConf().set(PartitionDependencyManagerService.CACHE_MANAGER_IMPL,
+                EhcacheHCatDependencyCache.class.getName());
+        if (cacheName != null) {
+            services.getConf().set(EhcacheHCatDependencyCache.CONF_CACHE_NAME, cacheName);
+        }
+        services.init();
+    }
+
+    @Override
+    @Test
+    public void testPartitionDependency() throws Exception {
+        setupServices(null);
+        super.testPartitionDependency();
+    }
+
+    @Override
+    @Test
+    public void testMemoryUsageAndSpeed() throws Exception {
+        // use all small case. Configured insrc/test/resources/ehcache.xml
+        setupServices("testnospilltodisk");
+        assertSpeedAndMemory(60000, 4500, 2000, 45000000, 40000000);
+    }
+
+    @Test
+    public void testMemoryUsageAndSpeedOverflowToDisk() throws Exception {
+        setupServices("testspilltodisk"); // maxElementsInMemory="20000". 2/3 on disk
+        // Insert and retrieve are between 15-30 seconds
+        // When run individually memIncreaseAfterInsert is < 45MB. But running with
+        // all tests it goes to 60MB.
+        assertSpeedAndMemory(60000, 30000, 11000, 60000000, 25000000);
+    }
+
+    @Test
+    public void testEvictionOnTimeToIdle() throws Exception {
+        setupServices("testevictionontimetoidle");
+        PartitionDependencyManagerService pdms = Services.get().get(PartitionDependencyManagerService.class);
+        int numItems = 50;
+        long startTime = System.currentTimeMillis();
+        for (int i = 0; i < numItems; i++) {
+            HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + i);
+            pdms.addMissingDependency(dep, "" + i);
+        }
+        verifyWaitingAction(pdms, numItems);
+        LOG.info("Time taken to insert and retrive " + numItems + " items is "
+                + (System.currentTimeMillis() - startTime));
+        // timeToIdleSeconds is 1
+        Thread.sleep(1000);
+        for (int i = 0; i < numItems; i++) {
+            assertNull(pdms.getWaitingActions(new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + "" + i)));
+        }
+    }
+
+    @Test
+    public void testEvictionOnTimeToLive() throws Exception {
+        setupServices("testevictionontimetolive");
+        PartitionDependencyManagerService pdms = Services.get().get(PartitionDependencyManagerService.class);
+        int numItems = 50;
+        long startTime = System.currentTimeMillis();
+        for (int i = 0; i < numItems; i++) {
+            HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + i);
+            pdms.addMissingDependency(dep, "" + i);
+        }
+        verifyWaitingAction(pdms, numItems);
+        LOG.info("Time taken to insert and retrive " + numItems + " items is "
+                + (System.currentTimeMillis() - startTime));
+        // timeToLiveSeconds is 1
+        Thread.sleep(1000);
+        for (int i = 0; i < numItems; i++) {
+            assertNull(pdms.getWaitingActions(new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + "" + i)));
+        }
+    }
+
+    @Test
+    public void testMaxElementsInMemory() throws Exception {
+        setupServices("testmaxelementsinmemory"); // maxElementsInMemory="500" overflowToDisk="false"
+        PartitionDependencyManagerService pdms = Services.get().get(PartitionDependencyManagerService.class);
+        int numItems = 1000;
+        for (int i = 0; i < numItems; i++) {
+            HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + i);
+            pdms.addMissingDependency(dep, "" + i);
+        }
+        // First 500 should have been evicted. But it is LRU and the next 100 removed is between 350 and 650.
+        for (int i = 0; i < 350; i++) {
+            assertNull(pdms.getWaitingActions(new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + "" + i)));
+        }
+        int evicted = 0;
+        for (int i = 350; i < 650; i++) {
+            if (pdms.getWaitingActions(new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + "" + i)) == null) {
+                evicted++;
+            }
+        }
+        assertEquals(150, evicted);
+        for (int i = 650; i < 1000; i++) {
+            String actionID = "" + i;
+            HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + actionID);
+            Collection<String> waitingActions = pdms.getWaitingActions(dep);
+            assertNotNull(dep.toURIString() + " is missing in cache", waitingActions);
+            assertTrue(dep.toURIString() + " is missing in cache", waitingActions.contains(actionID));
+        }
+    }
+
+}

Modified: oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerService.java
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerService.java?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerService.java (original)
+++ oozie/branches/hcat-intre/core/src/test/java/org/apache/oozie/service/TestPartitionDependencyManagerService.java Sat Feb 16 02:44:42 2013
@@ -106,9 +106,16 @@ public class TestPartitionDependencyMana
         assertNull(pdms.getAvailableDependencyURIs(actionId3));
     }
 
+    @Test
     public void testMemoryUsageAndSpeed() throws Exception {
+        // 2 to 4 seconds to insert 60K and 1 to 2 seconds to retrieve 60K
+        // 35-45MB for 60K entries
+        assertSpeedAndMemory(60000, 4000, 2000, 45000000, 40000000);
+    }
+
+    protected void assertSpeedAndMemory(int numItems, int insertTimeinMillis, int retrievalTimeinMillis,
+            long memIncreaseAfterInsert, long memIncreaseAfterInsertAndGC) throws Exception {
         PartitionDependencyManagerService pdms = Services.get().get(PartitionDependencyManagerService.class);
-        int numItems = 60000;
         System.gc();
         MemoryMXBean mb = ManagementFactory.getMemoryMXBean();
         long usedMemBeforeInsert = mb.getHeapMemoryUsage().getUsed();
@@ -120,14 +127,12 @@ public class TestPartitionDependencyMana
         long usedMemAfterInsert = mb.getHeapMemoryUsage().getUsed();
         long endTime = System.currentTimeMillis();
         LOG.info("Time taken to insert " + numItems + " items is " + (endTime - startTime));
-        assertTrue((endTime - startTime) < 4000); // 2 to 4 seconds to insert 60K
+        assertTrue((endTime - startTime) < insertTimeinMillis);
 
         LOG.info("Memory before and after insert: " + usedMemBeforeInsert + ","  + usedMemAfterInsert);
-        for (int i = 0; i < numItems; i++) {
-            verifyWaitingAction(pdms, "" + i);
-        }
+        verifyWaitingAction(pdms, numItems);
         LOG.info("Time taken to retrieve " + numItems + " items is " + (System.currentTimeMillis() - endTime));
-        assertTrue((System.currentTimeMillis() - endTime) < 2000); // 1 to 2 seconds to retrieve 60K
+        assertTrue((System.currentTimeMillis() - endTime) < retrievalTimeinMillis);
 
         long usedMemAfterRetrieval = mb.getHeapMemoryUsage().getUsed();
         System.gc();
@@ -138,14 +143,19 @@ public class TestPartitionDependencyMana
         LOG.info("Memory after retrieval = " + usedMemAfterRetrieval);
         LOG.info("Memory after GC = " + usedMemAfterGC);
 
-        assertTrue((usedMemAfterInsert - usedMemBeforeInsert) < 45000000); //35-45MB for 60K entries
+        // Commenting out as memory assertion is not reliable when running the full suite of tests.
+        //assertTrue((usedMemAfterInsert - usedMemBeforeInsert) < memIncreaseAfterInsert);
+        //assertTrue((usedMemAfterGC - usedMemBeforeInsert) < memIncreaseAfterInsertAndGC);
     }
 
-    protected void verifyWaitingAction(PartitionDependencyManagerService pdms, String actionID) throws URISyntaxException {
-        HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + actionID);
-        Collection<String> waitingActions = pdms.getWaitingActions(dep);
-        assertNotNull(dep.toURIString() + " is missing in cache", waitingActions);
-        assertTrue(dep.toURIString() + " is missing in cache", waitingActions.contains(actionID));
+    protected void verifyWaitingAction(PartitionDependencyManagerService pdms, int numItems) throws URISyntaxException {
+        for (int i = 0; i < numItems; i++) {
+            String actionID = "" + i;
+            HCatURI dep = new HCatURI("hcat://hcat.server.com:5080/mydb/mytbl/id=" + actionID);
+            Collection<String> waitingActions = pdms.getWaitingActions(dep);
+            assertNotNull(dep.toURIString() + " is missing in cache", waitingActions);
+            assertTrue(dep.toURIString() + " is missing in cache", waitingActions.contains(actionID));
+        }
     }
 
 }

Added: oozie/branches/hcat-intre/core/src/test/resources/ehcache.xml
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/core/src/test/resources/ehcache.xml?rev=1446838&view=auto
==============================================================================
--- oozie/branches/hcat-intre/core/src/test/resources/ehcache.xml (added)
+++ oozie/branches/hcat-intre/core/src/test/resources/ehcache.xml Sat Feb 16 02:44:42 2013
@@ -0,0 +1,22 @@
+<ehcache>
+    <!--  http://svn.codehaus.org/sonar/tags/1.1/sonar-commons/src/main/resources/ehcache.xml -->
+    <diskStore path="target"/>
+    <cache name="testspilltodisk" maxElementsInMemory="20000" eternal="false"
+        overflowToDisk="true" timeToIdleSeconds="500" timeToLiveSeconds="0"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="120" />
+    <cache name="testnospilltodisk" maxElementsInMemory="0" eternal="false"
+        overflowToDisk="false" timeToIdleSeconds="500" timeToLiveSeconds="0"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="120" />
+    <!--  Note: overflowToDisk=true does not work well with timeToIdleSeconds or timeToLiveSeconds.
+          Returns null even for unexpired entries. If maxElementsInMemory="5" and overflowToDisk="true"
+          testevictionontimetoidle and testevictionontimetolive  tests will fail -->
+    <cache name="testevictionontimetoidle" maxElementsInMemory="0" eternal="false"
+        overflowToDisk="false" timeToIdleSeconds="1" timeToLiveSeconds="0"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="120" />
+    <cache name="testevictionontimetolive" maxElementsInMemory="0" eternal="false"
+        overflowToDisk="false" timeToIdleSeconds="0" timeToLiveSeconds="1"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="120" />
+    <cache name="testmaxelementsinmemory" maxElementsInMemory="500" eternal="false"
+        overflowToDisk="false" timeToIdleSeconds="0" timeToLiveSeconds="0"
+        diskPersistent="false" diskExpiryThreadIntervalSeconds="120" />
+</ehcache>

Modified: oozie/branches/hcat-intre/pom.xml
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/pom.xml?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/pom.xml (original)
+++ oozie/branches/hcat-intre/pom.xml Sat Feb 16 02:44:42 2013
@@ -341,6 +341,12 @@
             </dependency>
 
             <dependency>
+                <groupId>net.sf.ehcache</groupId>
+                <artifactId>ehcache-core</artifactId>
+                <version>2.6.3</version>
+            </dependency>
+
+            <dependency>
                 <groupId>org.apache.hadoop</groupId>
                 <artifactId>hadoop-streaming</artifactId>
                 <version>${streaming.version}</version>

Modified: oozie/branches/hcat-intre/release-log.txt
URL: http://svn.apache.org/viewvc/oozie/branches/hcat-intre/release-log.txt?rev=1446838&r1=1446837&r2=1446838&view=diff
==============================================================================
--- oozie/branches/hcat-intre/release-log.txt (original)
+++ oozie/branches/hcat-intre/release-log.txt Sat Feb 16 02:44:42 2013
@@ -1,5 +1,6 @@
 -- Oozie 3.4.0 release (trunk - unreleased)
 
+OOZIE-1181 Dependency cache with configurations for eviction, ttl and max elements in memory (rohini via virag)
 OOZIE-1054 Create script to properly upload sharelib to HDFS (bowenzhangusa via tucu)
 OOZIE-1217 Address review comments in OOZIE-1210 (rohini via virag)
 OOZIE-1189 add filter option to specify JobID and AppName in SLA CLI command (egashira via mona)