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From ima...@apache.org
Subject [09/51] [partial] incubator-asterixdb git commit: Change folder structure for Java repackage
Date Tue, 25 Aug 2015 16:43:57 GMT
http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixCLI.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixCLI.java b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixCLI.java
new file mode 100644
index 0000000..69b0805
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixCLI.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.drivers;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.Reader;
+import java.util.List;
+
+import org.apache.commons.io.FileUtils;
+import org.kohsuke.args4j.Argument;
+import org.kohsuke.args4j.CmdLineParser;
+import org.kohsuke.args4j.Option;
+
+import edu.uci.ics.asterix.api.common.AsterixHyracksIntegrationUtil;
+import edu.uci.ics.asterix.api.java.AsterixJavaClient;
+import edu.uci.ics.asterix.common.config.GlobalConfig;
+
+public class AsterixCLI {
+    private static class Options {
+        @Option(name = "-properties", usage = "Name of properties file", required = true)
+        public String properties;
+
+        @Option(name = "-output", usage = "Output folder to place results", required = true)
+        public String outputFolder;
+
+        @Argument(usage = "AQL Files to run", multiValued = true, required = true)
+        public List<String> args;
+    }
+
+    public static void main(String args[]) throws Exception {
+        Options options = new Options();
+        CmdLineParser parser = new CmdLineParser(options);
+        parser.parseArgument(args);
+
+        setUp(options);
+        try {
+            for (String queryFile : options.args) {
+                Reader in = new FileReader(queryFile);
+                AsterixJavaClient ajc = new AsterixJavaClient(
+                        AsterixHyracksIntegrationUtil.getHyracksClientConnection(), in);
+                try {
+                    ajc.compile(true, false, false, false, false, true, false);
+                } finally {
+                    in.close();
+                }
+                ajc.execute();
+            }
+        } finally {
+            tearDown();
+        }
+        System.exit(0);
+    }
+
+    public static void setUp(Options options) throws Exception {
+        System.setProperty(GlobalConfig.CONFIG_FILE_PROPERTY, options.properties);
+        File outdir = new File(options.outputFolder);
+        outdir.mkdirs();
+
+        File log = new File("asterix_logs");
+        if (log.exists())
+            FileUtils.deleteDirectory(log);
+        File lsn = new File("last_checkpoint_lsn");
+        lsn.deleteOnExit();
+
+        AsterixHyracksIntegrationUtil.init();
+    }
+
+    public static void tearDown() throws Exception {
+        AsterixHyracksIntegrationUtil.deinit();
+    }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixClientDriver.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixClientDriver.java b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixClientDriver.java
new file mode 100644
index 0000000..1a82941
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixClientDriver.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.drivers;
+
+import java.io.FileReader;
+
+import org.kohsuke.args4j.CmdLineParser;
+
+import edu.uci.ics.asterix.api.common.AsterixClientConfig;
+import edu.uci.ics.asterix.api.java.AsterixJavaClient;
+import edu.uci.ics.hyracks.api.client.HyracksConnection;
+import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+
+public class AsterixClientDriver {
+
+    public static void main(String args[]) throws Exception {
+        AsterixClientConfig acc = new AsterixClientConfig();
+        CmdLineParser cmdParser = new CmdLineParser(acc);
+        try {
+            cmdParser.parseArgument(args);
+        } catch (Exception e) {
+            cmdParser.printUsage(System.err);
+            throw e;
+        }
+
+        if (acc.getArguments().isEmpty()) {
+            System.err.println("Please specify the file containing the query.");
+            return;
+        }
+        if (acc.getArguments().size() > 1) {
+            System.err.print("Too many arguments. ");
+            System.err.println("Only the file contained the query needs to be specified.");
+            return;
+        }
+        boolean exec = new Boolean(acc.execute);
+        IHyracksClientConnection hcc = exec ? new HyracksConnection("localhost", acc.hyracksPort) : null;
+        AsterixJavaClient q = compileQuery(hcc, acc.getArguments().get(0), new Boolean(acc.optimize), new Boolean(
+                acc.onlyPhysical), exec || new Boolean(acc.hyracksJob));
+        if (exec) {
+            q.execute();
+        }
+    }
+
+    private static AsterixJavaClient compileQuery(IHyracksClientConnection hcc, String filename, boolean optimize,
+            boolean onlyPhysical, boolean createBinaryRuntime) throws Exception {
+        FileReader reader = new FileReader(filename);
+        AsterixJavaClient q = new AsterixJavaClient(hcc, reader);
+        q.compile(optimize, true, true, true, onlyPhysical, createBinaryRuntime, createBinaryRuntime);
+        return q;
+    }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixWebServer.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixWebServer.java b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixWebServer.java
new file mode 100644
index 0000000..a1204b1
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/drivers/AsterixWebServer.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.drivers;
+
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.servlet.ServletHolder;
+
+import edu.uci.ics.asterix.api.http.servlet.APIServlet;
+
+public class AsterixWebServer {
+    public static void main(String args[]) throws Exception {
+        Server server = new Server(8080);
+        ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
+        context.setContextPath("/");
+        server.setHandler(context);
+
+        context.addServlet(new ServletHolder(new APIServlet()), "/*");
+        server.start();
+        server.join();
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/CentralFeedManager.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/CentralFeedManager.java b/asterix-app/src/main/java/org/apache/asterix/feeds/CentralFeedManager.java
new file mode 100644
index 0000000..7bd19dd
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/CentralFeedManager.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2009-2014 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringReader;
+import java.util.List;
+
+import edu.uci.ics.asterix.api.common.SessionConfig;
+import edu.uci.ics.asterix.api.common.SessionConfig.OutputFormat;
+import edu.uci.ics.asterix.aql.base.Statement;
+import edu.uci.ics.asterix.aql.parser.AQLParser;
+import edu.uci.ics.asterix.aql.translator.AqlTranslator;
+import edu.uci.ics.asterix.common.exceptions.AsterixException;
+import edu.uci.ics.asterix.common.feeds.api.ICentralFeedManager;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLoadManager;
+import edu.uci.ics.asterix.common.feeds.api.IFeedTrackingManager;
+import edu.uci.ics.asterix.metadata.feeds.SocketMessageListener;
+import edu.uci.ics.asterix.om.util.AsterixAppContextInfo;
+import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class CentralFeedManager implements ICentralFeedManager {
+
+    private static final ICentralFeedManager centralFeedManager = new CentralFeedManager();
+
+    public static ICentralFeedManager getInstance() {
+        return centralFeedManager;
+    }
+
+    private final int port;
+    private final IFeedLoadManager feedLoadManager;
+    private final IFeedTrackingManager feedTrackingManager;
+    private final SocketMessageListener messageListener;
+
+    private CentralFeedManager() {
+        this.port = AsterixAppContextInfo.getInstance().getFeedProperties().getFeedCentralManagerPort();
+        this.feedLoadManager = new FeedLoadManager();
+        this.feedTrackingManager = new FeedTrackingManager();
+        this.messageListener = new SocketMessageListener(port, new FeedMessageReceiver(this));
+    }
+
+    @Override
+    public void start() throws AsterixException {
+        messageListener.start();
+    }
+
+    @Override
+    public void stop() throws AsterixException, IOException {
+        messageListener.stop();
+    }
+
+    public static JobId runJob(JobSpecification spec, boolean waitForCompletion) throws Exception {
+        IHyracksClientConnection hcc = AsterixAppContextInfo.getInstance().getHcc();
+        JobId jobId = hcc.startJob(spec);
+        if (waitForCompletion) {
+            hcc.waitForCompletion(jobId);
+        }
+        return jobId;
+    }
+
+    @Override
+    public IFeedLoadManager getFeedLoadManager() {
+        return feedLoadManager;
+    }
+
+    @Override
+    public IFeedTrackingManager getFeedTrackingManager() {
+        return feedTrackingManager;
+    }
+
+    public static class AQLExecutor {
+
+        private static final PrintWriter out = new PrintWriter(System.out, true);
+
+        public static void executeAQL(String aql) throws Exception {
+            AQLParser parser = new AQLParser(new StringReader(aql));
+            List<Statement> statements;
+            statements = parser.Statement();
+            SessionConfig pc = new SessionConfig(out, OutputFormat.ADM);
+            AqlTranslator translator = new AqlTranslator(statements, pc);
+            translator.compileAndExecute(AsterixAppContextInfo.getInstance().getHcc(), null, AqlTranslator.ResultDelivery.SYNC);
+        }
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/FeedCollectInfo.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/FeedCollectInfo.java b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedCollectInfo.java
new file mode 100644
index 0000000..35b8378
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedCollectInfo.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import edu.uci.ics.asterix.common.feeds.FeedConnectionId;
+import edu.uci.ics.asterix.common.feeds.FeedId;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class FeedCollectInfo extends FeedInfo {
+    public FeedId sourceFeedId;
+    public FeedConnectionId feedConnectionId;
+    public List<String> collectLocations = new ArrayList<String>();
+    public List<String> computeLocations = new ArrayList<String>();
+    public List<String> storageLocations = new ArrayList<String>();
+    public Map<String, String> feedPolicy;
+    public String superFeedManagerHost;
+    public int superFeedManagerPort;
+    public boolean fullyConnected;
+
+    public FeedCollectInfo(FeedId sourceFeedId, FeedConnectionId feedConnectionId, JobSpecification jobSpec,
+            JobId jobId, Map<String, String> feedPolicy) {
+        super(jobSpec, jobId, FeedInfoType.COLLECT);
+        this.sourceFeedId = sourceFeedId;
+        this.feedConnectionId = feedConnectionId;
+        this.feedPolicy = feedPolicy;
+        this.fullyConnected = true;
+    }
+
+    @Override
+    public String toString() {
+        return FeedInfoType.COLLECT + "[" + feedConnectionId + "]";
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/FeedInfo.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/FeedInfo.java b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedInfo.java
new file mode 100644
index 0000000..afc6ccb
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedInfo.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.job.JobInfo;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class FeedInfo {
+    public JobSpecification jobSpec;
+    public JobInfo jobInfo;
+    public JobId jobId;
+    public FeedInfoType infoType;
+    public State state;
+
+    public enum State {
+        ACTIVE,
+        INACTIVE
+    }
+
+    public enum FeedInfoType {
+        INTAKE,
+        COLLECT
+    }
+
+    public FeedInfo(JobSpecification jobSpec, JobId jobId, FeedInfoType infoType) {
+        this.jobSpec = jobSpec;
+        this.jobId = jobId;
+        this.infoType = infoType;
+        this.state = State.INACTIVE;
+    }
+
+    @Override
+    public String toString() {
+        return " job id " + jobId;
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJobNotificationHandler.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJobNotificationHandler.java b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJobNotificationHandler.java
new file mode 100644
index 0000000..b045eae
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJobNotificationHandler.java
@@ -0,0 +1,739 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import java.rmi.RemoteException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.apache.commons.lang3.StringUtils;
+
+import edu.uci.ics.asterix.api.common.FeedWorkCollection.SubscribeFeedWork;
+import edu.uci.ics.asterix.common.exceptions.ACIDException;
+import edu.uci.ics.asterix.common.feeds.FeedActivity;
+import edu.uci.ics.asterix.common.feeds.FeedConnectJobInfo;
+import edu.uci.ics.asterix.common.feeds.FeedConnectionId;
+import edu.uci.ics.asterix.common.feeds.FeedConnectionRequest;
+import edu.uci.ics.asterix.common.feeds.FeedId;
+import edu.uci.ics.asterix.common.feeds.FeedIntakeInfo;
+import edu.uci.ics.asterix.common.feeds.FeedJobInfo;
+import edu.uci.ics.asterix.common.feeds.FeedJobInfo.FeedJobState;
+import edu.uci.ics.asterix.common.feeds.FeedJobInfo.JobType;
+import edu.uci.ics.asterix.common.feeds.FeedJointKey;
+import edu.uci.ics.asterix.common.feeds.FeedPolicyAccessor;
+import edu.uci.ics.asterix.common.feeds.api.IFeedJoint;
+import edu.uci.ics.asterix.common.feeds.api.IFeedJoint.State;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLifecycleEventSubscriber;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLifecycleEventSubscriber.FeedLifecycleEvent;
+import edu.uci.ics.asterix.common.feeds.api.IIntakeProgressTracker;
+import edu.uci.ics.asterix.common.feeds.message.StorageReportFeedMessage;
+import edu.uci.ics.asterix.feeds.FeedLifecycleListener.Message;
+import edu.uci.ics.asterix.metadata.feeds.BuiltinFeedPolicies;
+import edu.uci.ics.asterix.metadata.feeds.FeedCollectOperatorDescriptor;
+import edu.uci.ics.asterix.metadata.feeds.FeedIntakeOperatorDescriptor;
+import edu.uci.ics.asterix.metadata.feeds.FeedMetaOperatorDescriptor;
+import edu.uci.ics.asterix.metadata.feeds.FeedWorkManager;
+import edu.uci.ics.asterix.om.util.AsterixAppContextInfo;
+import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+import edu.uci.ics.hyracks.algebricks.runtime.base.IPushRuntimeFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.operators.meta.AlgebricksMetaOperatorDescriptor;
+import edu.uci.ics.hyracks.algebricks.runtime.operators.std.AssignRuntimeFactory;
+import edu.uci.ics.hyracks.api.client.IHyracksClientConnection;
+import edu.uci.ics.hyracks.api.dataflow.IConnectorDescriptor;
+import edu.uci.ics.hyracks.api.dataflow.IOperatorDescriptor;
+import edu.uci.ics.hyracks.api.dataflow.OperatorDescriptorId;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.job.JobInfo;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+import edu.uci.ics.hyracks.api.job.JobStatus;
+import edu.uci.ics.hyracks.storage.am.lsm.common.dataflow.LSMTreeIndexInsertUpdateDeleteOperatorDescriptor;
+
+public class FeedJobNotificationHandler implements Runnable {
+
+    private static final Logger LOGGER = Logger.getLogger(FeedJobNotificationHandler.class.getName());
+
+    private final LinkedBlockingQueue<Message> inbox;
+    private final Map<FeedConnectionId, List<IFeedLifecycleEventSubscriber>> eventSubscribers;
+
+    private final Map<JobId, FeedJobInfo> jobInfos;
+    private final Map<FeedId, FeedIntakeInfo> intakeJobInfos;
+    private final Map<FeedConnectionId, FeedConnectJobInfo> connectJobInfos;
+    private final Map<FeedId, List<IFeedJoint>> feedPipeline;
+    private final Map<FeedConnectionId, Pair<IIntakeProgressTracker, Long>> feedIntakeProgressTrackers;
+
+    public FeedJobNotificationHandler(LinkedBlockingQueue<Message> inbox) {
+        this.inbox = inbox;
+        this.jobInfos = new HashMap<JobId, FeedJobInfo>();
+        this.intakeJobInfos = new HashMap<FeedId, FeedIntakeInfo>();
+        this.connectJobInfos = new HashMap<FeedConnectionId, FeedConnectJobInfo>();
+        this.feedPipeline = new HashMap<FeedId, List<IFeedJoint>>();
+        this.eventSubscribers = new HashMap<FeedConnectionId, List<IFeedLifecycleEventSubscriber>>();
+        this.feedIntakeProgressTrackers = new HashMap<FeedConnectionId, Pair<IIntakeProgressTracker, Long>>();
+    }
+
+    @Override
+    public void run() {
+        Message mesg;
+        while (true) {
+            try {
+                mesg = inbox.take();
+                switch (mesg.messageKind) {
+                    case JOB_START:
+                        handleJobStartMessage(mesg);
+                        break;
+                    case JOB_FINISH:
+                        handleJobFinishMessage(mesg);
+                        break;
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+
+        }
+    }
+
+    public void registerFeedIntakeProgressTracker(FeedConnectionId connectionId,
+            IIntakeProgressTracker feedIntakeProgressTracker) {
+        if (feedIntakeProgressTrackers.get(connectionId) == null) {
+            this.feedIntakeProgressTrackers.put(connectionId, new Pair<IIntakeProgressTracker, Long>(
+                    feedIntakeProgressTracker, 0L));
+        } else {
+            throw new IllegalStateException(" Progress tracker for connection " + connectionId
+                    + " is alreader registered");
+        }
+    }
+
+    public void deregisterFeedIntakeProgressTracker(FeedConnectionId connectionId) {
+        this.feedIntakeProgressTrackers.remove(connectionId);
+    }
+
+    public void updateTrackingInformation(StorageReportFeedMessage srm) {
+        Pair<IIntakeProgressTracker, Long> p = feedIntakeProgressTrackers.get(srm.getConnectionId());
+        if (p != null && p.second < srm.getLastPersistedTupleIntakeTimestamp()) {
+            p.second = srm.getLastPersistedTupleIntakeTimestamp();
+            p.first.notifyIngestedTupleTimestamp(p.second);
+        }
+    }
+
+    public Collection<FeedIntakeInfo> getFeedIntakeInfos() {
+        return intakeJobInfos.values();
+    }
+
+    public Collection<FeedConnectJobInfo> getFeedConnectInfos() {
+        return connectJobInfos.values();
+    }
+
+    public void registerFeedJoint(IFeedJoint feedJoint) {
+        List<IFeedJoint> feedJointsOnPipeline = feedPipeline.get(feedJoint.getOwnerFeedId());
+        if (feedJointsOnPipeline == null) {
+            feedJointsOnPipeline = new ArrayList<IFeedJoint>();
+            feedPipeline.put(feedJoint.getOwnerFeedId(), feedJointsOnPipeline);
+            feedJointsOnPipeline.add(feedJoint);
+        } else {
+            if (!feedJointsOnPipeline.contains(feedJoint)) {
+                feedJointsOnPipeline.add(feedJoint);
+            } else {
+                throw new IllegalArgumentException("Feed joint " + feedJoint + " already registered");
+            }
+        }
+    }
+
+    public void registerFeedIntakeJob(FeedId feedId, JobId jobId, JobSpecification jobSpec) throws HyracksDataException {
+        if (jobInfos.get(jobId) != null) {
+            throw new IllegalStateException("Feed job already registered");
+        }
+
+        List<IFeedJoint> joints = feedPipeline.get(feedId);
+        IFeedJoint intakeJoint = null;
+        for (IFeedJoint joint : joints) {
+            if (joint.getType().equals(IFeedJoint.FeedJointType.INTAKE)) {
+                intakeJoint = joint;
+                break;
+            }
+        }
+
+        if (intakeJoint != null) {
+            FeedIntakeInfo intakeJobInfo = new FeedIntakeInfo(jobId, FeedJobState.CREATED, FeedJobInfo.JobType.INTAKE,
+                    feedId, intakeJoint, jobSpec);
+            intakeJobInfos.put(feedId, intakeJobInfo);
+            jobInfos.put(jobId, intakeJobInfo);
+
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Registered feed intake [" + jobId + "]" + " for feed " + feedId);
+            }
+        } else {
+            throw new HyracksDataException("Could not register feed intake job [" + jobId + "]" + " for feed  "
+                    + feedId);
+        }
+    }
+
+    public void registerFeedCollectionJob(FeedId sourceFeedId, FeedConnectionId connectionId, JobId jobId,
+            JobSpecification jobSpec, Map<String, String> feedPolicy) {
+        if (jobInfos.get(jobId) != null) {
+            throw new IllegalStateException("Feed job already registered");
+        }
+
+        List<IFeedJoint> feedJoints = feedPipeline.get(sourceFeedId);
+        FeedConnectionId cid = null;
+        IFeedJoint sourceFeedJoint = null;
+        for (IFeedJoint joint : feedJoints) {
+            cid = joint.getReceiver(connectionId);
+            if (cid != null) {
+                sourceFeedJoint = joint;
+                break;
+            }
+        }
+
+        if (cid != null) {
+            FeedConnectJobInfo cInfo = new FeedConnectJobInfo(jobId, FeedJobState.CREATED, connectionId,
+                    sourceFeedJoint, null, jobSpec, feedPolicy);
+            jobInfos.put(jobId, cInfo);
+            connectJobInfos.put(connectionId, cInfo);
+
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Registered feed connection [" + jobId + "]" + " for feed " + connectionId);
+            }
+        } else {
+            if (LOGGER.isLoggable(Level.WARNING)) {
+                LOGGER.warning("Could not register feed collection job [" + jobId + "]" + " for feed connection "
+                        + connectionId);
+            }
+        }
+
+    }
+
+    public void deregisterFeedIntakeJob(JobId jobId) {
+        if (jobInfos.get(jobId) == null) {
+            throw new IllegalStateException(" Feed Intake job not registered ");
+        }
+
+        FeedIntakeInfo info = (FeedIntakeInfo) jobInfos.get(jobId);
+        jobInfos.remove(jobId);
+        intakeJobInfos.remove(info.getFeedId());
+
+        if (!info.getState().equals(FeedJobState.UNDER_RECOVERY)) {
+            List<IFeedJoint> joints = feedPipeline.get(info.getFeedId());
+            joints.remove(info.getIntakeFeedJoint());
+
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Deregistered feed intake job [" + jobId + "]");
+            }
+        } else {
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Not removing feed joint as intake job is in " + FeedJobState.UNDER_RECOVERY + " state.");
+            }
+        }
+
+    }
+
+    private void handleJobStartMessage(Message message) throws Exception {
+        FeedJobInfo jobInfo = jobInfos.get(message.jobId);
+        switch (jobInfo.getJobType()) {
+            case INTAKE:
+                handleIntakeJobStartMessage((FeedIntakeInfo) jobInfo);
+                break;
+            case FEED_CONNECT:
+                handleCollectJobStartMessage((FeedConnectJobInfo) jobInfo);
+                break;
+        }
+
+    }
+
+    private void handleJobFinishMessage(Message message) throws Exception {
+        FeedJobInfo jobInfo = jobInfos.get(message.jobId);
+        switch (jobInfo.getJobType()) {
+            case INTAKE:
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Intake Job finished for feed intake " + jobInfo.getJobId());
+                }
+                handleFeedIntakeJobFinishMessage((FeedIntakeInfo) jobInfo, message);
+                break;
+            case FEED_CONNECT:
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Collect Job finished for  " + (FeedConnectJobInfo) jobInfo);
+                }
+                handleFeedCollectJobFinishMessage((FeedConnectJobInfo) jobInfo);
+                break;
+        }
+
+    }
+
+    private synchronized void handleIntakeJobStartMessage(FeedIntakeInfo intakeJobInfo) throws Exception {
+        List<OperatorDescriptorId> intakeOperatorIds = new ArrayList<OperatorDescriptorId>();
+        Map<OperatorDescriptorId, IOperatorDescriptor> operators = intakeJobInfo.getSpec().getOperatorMap();
+        for (Entry<OperatorDescriptorId, IOperatorDescriptor> entry : operators.entrySet()) {
+            IOperatorDescriptor opDesc = entry.getValue();
+            if (opDesc instanceof FeedIntakeOperatorDescriptor) {
+                intakeOperatorIds.add(opDesc.getOperatorId());
+            }
+        }
+
+        IHyracksClientConnection hcc = AsterixAppContextInfo.getInstance().getHcc();
+        JobInfo info = hcc.getJobInfo(intakeJobInfo.getJobId());
+        List<String> intakeLocations = new ArrayList<String>();
+        for (OperatorDescriptorId intakeOperatorId : intakeOperatorIds) {
+            Map<Integer, String> operatorLocations = info.getOperatorLocations().get(intakeOperatorId);
+            int nOperatorInstances = operatorLocations.size();
+            for (int i = 0; i < nOperatorInstances; i++) {
+                intakeLocations.add(operatorLocations.get(i));
+            }
+        }
+        // intakeLocations is an ordered list; element at position i corresponds to location of i'th instance of operator
+        intakeJobInfo.setIntakeLocation(intakeLocations);
+        intakeJobInfo.getIntakeFeedJoint().setState(State.ACTIVE);
+        intakeJobInfo.setState(FeedJobState.ACTIVE);
+
+        // notify event listeners 
+        notifyFeedEventSubscribers(intakeJobInfo, FeedLifecycleEvent.FEED_INTAKE_STARTED);
+    }
+
+    private void handleCollectJobStartMessage(FeedConnectJobInfo cInfo) throws RemoteException, ACIDException {
+        // set locations of feed sub-operations (intake, compute, store)
+        setLocations(cInfo);
+
+        // activate joints
+        List<IFeedJoint> joints = feedPipeline.get(cInfo.getConnectionId().getFeedId());
+        for (IFeedJoint joint : joints) {
+            if (joint.getProvider().equals(cInfo.getConnectionId())) {
+                joint.setState(State.ACTIVE);
+                if (joint.getType().equals(IFeedJoint.FeedJointType.COMPUTE)) {
+                    cInfo.setComputeFeedJoint(joint);
+                }
+            }
+        }
+        cInfo.setState(FeedJobState.ACTIVE);
+
+        // register activity in metadata
+        registerFeedActivity(cInfo);
+        // notify event listeners
+        notifyFeedEventSubscribers(cInfo, FeedLifecycleEvent.FEED_COLLECT_STARTED);
+    }
+
+    private void notifyFeedEventSubscribers(FeedJobInfo jobInfo, FeedLifecycleEvent event) {
+        JobType jobType = jobInfo.getJobType();
+        List<FeedConnectionId> impactedConnections = new ArrayList<FeedConnectionId>();
+        if (jobType.equals(JobType.INTAKE)) {
+            FeedId feedId = ((FeedIntakeInfo) jobInfo).getFeedId();
+            for (FeedConnectionId connId : eventSubscribers.keySet()) {
+                if (connId.getFeedId().equals(feedId)) {
+                    impactedConnections.add(connId);
+                }
+            }
+        } else {
+            impactedConnections.add(((FeedConnectJobInfo) jobInfo).getConnectionId());
+        }
+
+        for (FeedConnectionId connId : impactedConnections) {
+            List<IFeedLifecycleEventSubscriber> subscribers = eventSubscribers.get(connId);
+            if (subscribers != null && !subscribers.isEmpty()) {
+                for (IFeedLifecycleEventSubscriber subscriber : subscribers) {
+                    subscriber.handleFeedEvent(event);
+                }
+            }
+        }
+    }
+
+    public synchronized void submitFeedConnectionRequest(IFeedJoint feedJoint, final FeedConnectionRequest request)
+            throws Exception {
+        List<String> locations = null;
+        switch (feedJoint.getType()) {
+            case INTAKE:
+                FeedIntakeInfo intakeInfo = intakeJobInfos.get(feedJoint.getOwnerFeedId());
+                locations = intakeInfo.getIntakeLocation();
+                break;
+            case COMPUTE:
+                FeedConnectionId connectionId = feedJoint.getProvider();
+                FeedConnectJobInfo cInfo = connectJobInfos.get(connectionId);
+                locations = cInfo.getComputeLocations();
+                break;
+        }
+
+        SubscribeFeedWork work = new SubscribeFeedWork(locations.toArray(new String[] {}), request);
+        FeedWorkManager.INSTANCE.submitWork(work, new SubscribeFeedWork.FeedSubscribeWorkEventListener());
+    }
+
+    public IFeedJoint getSourceFeedJoint(FeedConnectionId connectionId) {
+        FeedConnectJobInfo cInfo = connectJobInfos.get(connectionId);
+        if (cInfo != null) {
+            return cInfo.getSourceFeedJoint();
+        }
+        return null;
+    }
+
+    public Set<FeedConnectionId> getActiveFeedConnections() {
+        Set<FeedConnectionId> activeConnections = new HashSet<FeedConnectionId>();
+        for (FeedConnectJobInfo cInfo : connectJobInfos.values()) {
+            if (cInfo.getState().equals(FeedJobState.ACTIVE)) {
+                activeConnections.add(cInfo.getConnectionId());
+            }
+        }
+        return activeConnections;
+    }
+
+    public boolean isFeedConnectionActive(FeedConnectionId connectionId) {
+        FeedConnectJobInfo cInfo = connectJobInfos.get(connectionId);
+        if (cInfo != null) {
+            return cInfo.getState().equals(FeedJobState.ACTIVE);
+        }
+        return false;
+    }
+
+    public void setJobState(FeedConnectionId connectionId, FeedJobState jobState) {
+        FeedConnectJobInfo connectJobInfo = connectJobInfos.get(connectionId);
+        connectJobInfo.setState(jobState);
+    }
+
+    public FeedJobState getFeedJobState(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId).getState();
+    }
+
+    private void handleFeedIntakeJobFinishMessage(FeedIntakeInfo intakeInfo, Message message) throws Exception {
+        IHyracksClientConnection hcc = AsterixAppContextInfo.getInstance().getHcc();
+        JobInfo info = hcc.getJobInfo(message.jobId);
+        JobStatus status = info.getStatus();
+        FeedLifecycleEvent event;
+        event = status.equals(JobStatus.FAILURE) ? FeedLifecycleEvent.FEED_INTAKE_FAILURE
+                : FeedLifecycleEvent.FEED_ENDED;
+
+        // remove feed joints
+        deregisterFeedIntakeJob(message.jobId);
+
+        // notify event listeners 
+        notifyFeedEventSubscribers(intakeInfo, event);
+
+    }
+
+    private void handleFeedCollectJobFinishMessage(FeedConnectJobInfo cInfo) throws Exception {
+        FeedConnectionId connectionId = cInfo.getConnectionId();
+
+        IHyracksClientConnection hcc = AsterixAppContextInfo.getInstance().getHcc();
+        JobInfo info = hcc.getJobInfo(cInfo.getJobId());
+        JobStatus status = info.getStatus();
+        boolean failure = status != null && status.equals(JobStatus.FAILURE);
+        FeedPolicyAccessor fpa = new FeedPolicyAccessor(cInfo.getFeedPolicy());
+
+        boolean removeJobHistory = !failure;
+        boolean retainSubsription = cInfo.getState().equals(FeedJobState.UNDER_RECOVERY)
+                || (failure && fpa.continueOnHardwareFailure());
+
+        if (!retainSubsription) {
+            IFeedJoint feedJoint = cInfo.getSourceFeedJoint();
+            feedJoint.removeReceiver(connectionId);
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Subscription " + cInfo.getConnectionId() + " completed successfully. Removed subscription");
+            }
+            removeFeedJointsPostPipelineTermination(cInfo.getConnectionId());
+        }
+
+        if (removeJobHistory) {
+            connectJobInfos.remove(connectionId);
+            jobInfos.remove(cInfo.getJobId());
+            feedIntakeProgressTrackers.remove(cInfo.getConnectionId());
+        }
+        deregisterFeedActivity(cInfo);
+
+        // notify event listeners 
+        FeedLifecycleEvent event = failure ? FeedLifecycleEvent.FEED_COLLECT_FAILURE : FeedLifecycleEvent.FEED_ENDED;
+        notifyFeedEventSubscribers(cInfo, event);
+    }
+
+    private void registerFeedActivity(FeedConnectJobInfo cInfo) {
+        Map<String, String> feedActivityDetails = new HashMap<String, String>();
+
+        if (cInfo.getCollectLocations() != null) {
+            feedActivityDetails.put(FeedActivity.FeedActivityDetails.INTAKE_LOCATIONS,
+                    StringUtils.join(cInfo.getCollectLocations().iterator(), ','));
+        }
+
+        if (cInfo.getComputeLocations() != null) {
+            feedActivityDetails.put(FeedActivity.FeedActivityDetails.COMPUTE_LOCATIONS,
+                    StringUtils.join(cInfo.getComputeLocations().iterator(), ','));
+        }
+
+        if (cInfo.getStorageLocations() != null) {
+            feedActivityDetails.put(FeedActivity.FeedActivityDetails.STORAGE_LOCATIONS,
+                    StringUtils.join(cInfo.getStorageLocations().iterator(), ','));
+        }
+
+        String policyName = cInfo.getFeedPolicy().get(BuiltinFeedPolicies.CONFIG_FEED_POLICY_KEY);
+        feedActivityDetails.put(FeedActivity.FeedActivityDetails.FEED_POLICY_NAME, policyName);
+
+        feedActivityDetails.put(FeedActivity.FeedActivityDetails.FEED_CONNECT_TIMESTAMP, (new Date()).toString());
+        try {
+            FeedActivity feedActivity = new FeedActivity(cInfo.getConnectionId().getFeedId().getDataverse(), cInfo
+                    .getConnectionId().getFeedId().getFeedName(), cInfo.getConnectionId().getDatasetName(),
+                    feedActivityDetails);
+            CentralFeedManager.getInstance().getFeedLoadManager()
+                    .reportFeedActivity(cInfo.getConnectionId(), feedActivity);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            if (LOGGER.isLoggable(Level.WARNING)) {
+                LOGGER.warning("Unable to register feed activity for " + cInfo + " " + e.getMessage());
+            }
+
+        }
+
+    }
+
+    public void deregisterFeedActivity(FeedConnectJobInfo cInfo) {
+        try {
+            CentralFeedManager.getInstance().getFeedLoadManager().removeFeedActivity(cInfo.getConnectionId());
+        } catch (Exception e) {
+            if (LOGGER.isLoggable(Level.WARNING)) {
+                LOGGER.warning("Unable to deregister feed activity for " + cInfo + " " + e.getMessage());
+            }
+        }
+    }
+
+    public void removeFeedJointsPostPipelineTermination(FeedConnectionId connectionId) {
+        FeedConnectJobInfo cInfo = connectJobInfos.get(connectionId);
+        List<IFeedJoint> feedJoints = feedPipeline.get(connectionId.getFeedId());
+
+        IFeedJoint sourceJoint = cInfo.getSourceFeedJoint();
+        List<FeedConnectionId> all = sourceJoint.getReceivers();
+        boolean removeSourceJoint = all.size() < 2;
+        if (removeSourceJoint) {
+            feedJoints.remove(sourceJoint);
+        }
+
+        IFeedJoint computeJoint = cInfo.getComputeFeedJoint();
+        if (computeJoint != null && computeJoint.getReceivers().size() < 2) {
+            feedJoints.remove(computeJoint);
+        }
+    }
+
+    public boolean isRegisteredFeedJob(JobId jobId) {
+        return jobInfos.get(jobId) != null;
+    }
+
+    public List<String> getFeedComputeLocations(FeedId feedId) {
+        List<IFeedJoint> feedJoints = feedPipeline.get(feedId);
+        for (IFeedJoint joint : feedJoints) {
+            if (joint.getFeedJointKey().getFeedId().equals(feedId)) {
+                return connectJobInfos.get(joint.getProvider()).getComputeLocations();
+            }
+        }
+        return null;
+    }
+
+    public List<String> getFeedStorageLocations(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId).getStorageLocations();
+    }
+
+    public List<String> getFeedCollectLocations(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId).getCollectLocations();
+    }
+
+    public List<String> getFeedIntakeLocations(FeedId feedId) {
+        return intakeJobInfos.get(feedId).getIntakeLocation();
+    }
+
+    public JobId getFeedCollectJobId(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId).getJobId();
+    }
+
+    public void registerFeedEventSubscriber(FeedConnectionId connectionId, IFeedLifecycleEventSubscriber subscriber) {
+        List<IFeedLifecycleEventSubscriber> subscribers = eventSubscribers.get(connectionId);
+        if (subscribers == null) {
+            subscribers = new ArrayList<IFeedLifecycleEventSubscriber>();
+            eventSubscribers.put(connectionId, subscribers);
+        }
+        subscribers.add(subscriber);
+    }
+
+    public void deregisterFeedEventSubscriber(FeedConnectionId connectionId, IFeedLifecycleEventSubscriber subscriber) {
+        List<IFeedLifecycleEventSubscriber> subscribers = eventSubscribers.get(connectionId);
+        if (subscribers != null) {
+            subscribers.remove(subscriber);
+        }
+    }
+
+    //============================
+
+    public boolean isFeedPointAvailable(FeedJointKey feedJointKey) {
+        List<IFeedJoint> joints = feedPipeline.get(feedJointKey.getFeedId());
+        if (joints != null && !joints.isEmpty()) {
+            for (IFeedJoint joint : joints) {
+                if (joint.getFeedJointKey().equals(feedJointKey)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    public Collection<IFeedJoint> getFeedIntakeJoints() {
+        List<IFeedJoint> intakeFeedPoints = new ArrayList<IFeedJoint>();
+        for (FeedIntakeInfo info : intakeJobInfos.values()) {
+            intakeFeedPoints.add(info.getIntakeFeedJoint());
+        }
+        return intakeFeedPoints;
+    }
+
+    public IFeedJoint getFeedJoint(FeedJointKey feedPointKey) {
+        List<IFeedJoint> joints = feedPipeline.get(feedPointKey.getFeedId());
+        if (joints != null && !joints.isEmpty()) {
+            for (IFeedJoint joint : joints) {
+                if (joint.getFeedJointKey().equals(feedPointKey)) {
+                    return joint;
+                }
+            }
+        }
+        return null;
+    }
+
+    public IFeedJoint getAvailableFeedJoint(FeedJointKey feedJointKey) {
+        IFeedJoint feedJoint = getFeedJoint(feedJointKey);
+        if (feedJoint != null) {
+            return feedJoint;
+        } else {
+            String jointKeyString = feedJointKey.getStringRep();
+            List<IFeedJoint> jointsOnPipeline = feedPipeline.get(feedJointKey.getFeedId());
+            IFeedJoint candidateJoint = null;
+            if (jointsOnPipeline != null) {
+                for (IFeedJoint joint : jointsOnPipeline) {
+                    if (jointKeyString.contains(joint.getFeedJointKey().getStringRep())) {
+                        if (candidateJoint == null) {
+                            candidateJoint = joint;
+                        } else if (joint.getFeedJointKey().getStringRep()
+                                .contains(candidateJoint.getFeedJointKey().getStringRep())) { // found feed point is a super set of the earlier find
+                            candidateJoint = joint;
+                        }
+                    }
+                }
+            }
+            return candidateJoint;
+        }
+    }
+
+    public JobSpecification getCollectJobSpecification(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId).getSpec();
+    }
+
+    public IFeedJoint getFeedPoint(FeedId sourceFeedId, IFeedJoint.FeedJointType type) {
+        List<IFeedJoint> joints = feedPipeline.get(sourceFeedId);
+        for (IFeedJoint joint : joints) {
+            if (joint.getType().equals(type)) {
+                return joint;
+            }
+        }
+        return null;
+    }
+
+    public FeedConnectJobInfo getFeedConnectJobInfo(FeedConnectionId connectionId) {
+        return connectJobInfos.get(connectionId);
+    }
+
+    private void setLocations(FeedConnectJobInfo cInfo) {
+        JobSpecification jobSpec = cInfo.getSpec();
+
+        List<OperatorDescriptorId> collectOperatorIds = new ArrayList<OperatorDescriptorId>();
+        List<OperatorDescriptorId> computeOperatorIds = new ArrayList<OperatorDescriptorId>();
+        List<OperatorDescriptorId> storageOperatorIds = new ArrayList<OperatorDescriptorId>();
+
+        Map<OperatorDescriptorId, IOperatorDescriptor> operators = jobSpec.getOperatorMap();
+        for (Entry<OperatorDescriptorId, IOperatorDescriptor> entry : operators.entrySet()) {
+            IOperatorDescriptor opDesc = entry.getValue();
+            IOperatorDescriptor actualOp = null;
+            if (opDesc instanceof FeedMetaOperatorDescriptor) {
+                actualOp = ((FeedMetaOperatorDescriptor) opDesc).getCoreOperator();
+            } else {
+                actualOp = opDesc;
+            }
+
+            if (actualOp instanceof AlgebricksMetaOperatorDescriptor) {
+                AlgebricksMetaOperatorDescriptor op = ((AlgebricksMetaOperatorDescriptor) actualOp);
+                IPushRuntimeFactory[] runtimeFactories = op.getPipeline().getRuntimeFactories();
+                boolean computeOp = false;
+                for (IPushRuntimeFactory rf : runtimeFactories) {
+                    if (rf instanceof AssignRuntimeFactory) {
+                        IConnectorDescriptor connDesc = jobSpec.getOperatorInputMap().get(op.getOperatorId()).get(0);
+                        IOperatorDescriptor sourceOp = jobSpec.getConnectorOperatorMap().get(connDesc.getConnectorId())
+                                .getLeft().getLeft();
+                        if (sourceOp instanceof FeedCollectOperatorDescriptor) {
+                            computeOp = true;
+                            break;
+                        }
+                    }
+                }
+                if (computeOp) {
+                    computeOperatorIds.add(entry.getKey());
+                }
+            } else if (actualOp instanceof LSMTreeIndexInsertUpdateDeleteOperatorDescriptor) {
+                storageOperatorIds.add(entry.getKey());
+            } else if (actualOp instanceof FeedCollectOperatorDescriptor) {
+                collectOperatorIds.add(entry.getKey());
+            }
+        }
+
+        try {
+            IHyracksClientConnection hcc = AsterixAppContextInfo.getInstance().getHcc();
+            JobInfo info = hcc.getJobInfo(cInfo.getJobId());
+            List<String> collectLocations = new ArrayList<String>();
+            for (OperatorDescriptorId collectOpId : collectOperatorIds) {
+                Map<Integer, String> operatorLocations = info.getOperatorLocations().get(collectOpId);
+                int nOperatorInstances = operatorLocations.size();
+                for (int i = 0; i < nOperatorInstances; i++) {
+                    collectLocations.add(operatorLocations.get(i));
+                }
+            }
+
+            List<String> computeLocations = new ArrayList<String>();
+            for (OperatorDescriptorId computeOpId : computeOperatorIds) {
+                Map<Integer, String> operatorLocations = info.getOperatorLocations().get(computeOpId);
+                if (operatorLocations != null) {
+                    int nOperatorInstances = operatorLocations.size();
+                    for (int i = 0; i < nOperatorInstances; i++) {
+                        computeLocations.add(operatorLocations.get(i));
+                    }
+                } else {
+                    computeLocations.clear();
+                    computeLocations.addAll(collectLocations);
+                }
+            }
+
+            List<String> storageLocations = new ArrayList<String>();
+            for (OperatorDescriptorId storageOpId : storageOperatorIds) {
+                Map<Integer, String> operatorLocations = info.getOperatorLocations().get(storageOpId);
+                if (operatorLocations == null) {
+                    continue;
+                }
+                int nOperatorInstances = operatorLocations.size();
+                for (int i = 0; i < nOperatorInstances; i++) {
+                    storageLocations.add(operatorLocations.get(i));
+                }
+            }
+            cInfo.setCollectLocations(collectLocations);
+            cInfo.setComputeLocations(computeLocations);
+            cInfo.setStorageLocations(storageLocations);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJoint.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJoint.java b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJoint.java
new file mode 100644
index 0000000..a0411ce
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedJoint.java
@@ -0,0 +1,186 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.asterix.common.feeds.FeedConnectionId;
+import edu.uci.ics.asterix.common.feeds.FeedConnectionRequest;
+import edu.uci.ics.asterix.common.feeds.FeedId;
+import edu.uci.ics.asterix.common.feeds.FeedJointKey;
+import edu.uci.ics.asterix.common.feeds.api.IFeedJoint;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLifecycleListener.ConnectionLocation;
+
+public class FeedJoint implements IFeedJoint {
+
+    private static final Logger LOGGER = Logger.getLogger(FeedJoint.class.getName());
+
+    /** A unique key associated with the feed point **/
+    private final FeedJointKey key;
+
+    /** The state associated with the FeedJoint **/
+    private State state;
+
+    /** A list of subscribers that receive data from this FeedJoint **/
+    private final List<FeedConnectionId> receivers;
+
+    /** The feedId on which the feedPoint resides **/
+    private final FeedId ownerFeedId;
+
+    /** A list of feed subscription requests submitted for subscribing to the FeedPoint's data **/
+    private final List<FeedConnectionRequest> connectionRequests;
+
+    private final ConnectionLocation connectionLocation;
+
+    private final FeedJointType type;
+
+    private FeedConnectionId provider;
+
+    public FeedJoint(FeedJointKey key, FeedId ownerFeedId, ConnectionLocation subscriptionLocation, FeedJointType type,
+            FeedConnectionId provider) {
+        this.key = key;
+        this.ownerFeedId = ownerFeedId;
+        this.type = type;
+        this.receivers = new ArrayList<FeedConnectionId>();
+        this.state = State.CREATED;
+        this.connectionLocation = subscriptionLocation;
+        this.connectionRequests = new ArrayList<FeedConnectionRequest>();
+        this.provider = provider;
+    }
+
+    @Override
+    public int hashCode() {
+        return key.hashCode();
+    }
+
+    public void addReceiver(FeedConnectionId connectionId) {
+        receivers.add(connectionId);
+    }
+
+    public void removeReceiver(FeedConnectionId connectionId) {
+        receivers.remove(connectionId);
+    }
+
+    public synchronized void addConnectionRequest(FeedConnectionRequest request) {
+        connectionRequests.add(request);
+        if (state.equals(State.ACTIVE)) {
+            handlePendingConnectionRequest();
+        }
+    }
+
+    public synchronized void setState(State state) {
+        if (this.state.equals(state)) {
+            return;
+        }
+        this.state = state;
+        if (this.state.equals(State.ACTIVE)) {
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("Feed joint " + this + " is now " + State.ACTIVE);
+            }
+            handlePendingConnectionRequest();
+        }
+    }
+
+    private void handlePendingConnectionRequest() {
+        for (FeedConnectionRequest connectionRequest : connectionRequests) {
+            FeedConnectionId connectionId = new FeedConnectionId(connectionRequest.getReceivingFeedId(),
+                    connectionRequest.getTargetDataset());
+            try {
+                FeedLifecycleListener.INSTANCE.submitFeedConnectionRequest(this, connectionRequest);
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Submitted feed connection request " + connectionRequest + " at feed joint " + this);
+                }
+                addReceiver(connectionId);
+            } catch (Exception e) {
+                if (LOGGER.isLoggable(Level.WARNING)) {
+                    LOGGER.warning("Unsuccessful attempt at submitting connection request " + connectionRequest
+                            + " at feed joint " + this + ". Message " + e.getMessage());
+                }
+                e.printStackTrace();
+            }
+        }
+        connectionRequests.clear();
+    }
+
+    public FeedConnectionId getReceiver(FeedConnectionId connectionId) {
+        for (FeedConnectionId cid : receivers) {
+            if (cid.equals(connectionId)) {
+                return cid;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public String toString() {
+        return key.toString() + " [" + connectionLocation + "]" + "[" + state + "]";
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == null) {
+            return false;
+        }
+        if (o == this) {
+            return true;
+        }
+        if (!(o instanceof FeedJoint)) {
+            return false;
+        }
+        return ((FeedJoint) o).getFeedJointKey().equals(this.key);
+    }
+
+    public FeedId getOwnerFeedId() {
+        return ownerFeedId;
+    }
+
+    public List<FeedConnectionRequest> getConnectionRequests() {
+        return connectionRequests;
+    }
+
+    public ConnectionLocation getConnectionLocation() {
+        return connectionLocation;
+    }
+
+    public FeedJointType getType() {
+        return type;
+    }
+
+    @Override
+    public FeedConnectionId getProvider() {
+        return provider;
+    }
+
+    public List<FeedConnectionId> getReceivers() {
+        return receivers;
+    }
+
+    public FeedJointKey getKey() {
+        return key;
+    }
+
+    public synchronized State getState() {
+        return state;
+    }
+
+    @Override
+    public FeedJointKey getFeedJointKey() {
+        return key;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb/blob/34d81630/asterix-app/src/main/java/org/apache/asterix/feeds/FeedLifecycleListener.java
----------------------------------------------------------------------
diff --git a/asterix-app/src/main/java/org/apache/asterix/feeds/FeedLifecycleListener.java b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedLifecycleListener.java
new file mode 100644
index 0000000..432a56d
--- /dev/null
+++ b/asterix-app/src/main/java/org/apache/asterix/feeds/FeedLifecycleListener.java
@@ -0,0 +1,486 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed 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 from
+ *
+ *     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 edu.uci.ics.asterix.feeds;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import edu.uci.ics.asterix.api.common.SessionConfig;
+import edu.uci.ics.asterix.api.common.SessionConfig.OutputFormat;
+import edu.uci.ics.asterix.aql.base.Statement;
+import edu.uci.ics.asterix.aql.expression.DataverseDecl;
+import edu.uci.ics.asterix.aql.expression.DisconnectFeedStatement;
+import edu.uci.ics.asterix.aql.expression.Identifier;
+import edu.uci.ics.asterix.aql.translator.AqlTranslator;
+import edu.uci.ics.asterix.common.api.IClusterManagementWork;
+import edu.uci.ics.asterix.common.api.IClusterManagementWork.ClusterState;
+import edu.uci.ics.asterix.common.api.IClusterManagementWorkResponse;
+import edu.uci.ics.asterix.common.feeds.FeedConnectJobInfo;
+import edu.uci.ics.asterix.common.feeds.FeedConnectionId;
+import edu.uci.ics.asterix.common.feeds.FeedConnectionRequest;
+import edu.uci.ics.asterix.common.feeds.FeedId;
+import edu.uci.ics.asterix.common.feeds.FeedIntakeInfo;
+import edu.uci.ics.asterix.common.feeds.FeedJobInfo;
+import edu.uci.ics.asterix.common.feeds.FeedJobInfo.FeedJobState;
+import edu.uci.ics.asterix.common.feeds.FeedJointKey;
+import edu.uci.ics.asterix.common.feeds.api.IFeedJoint;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLifecycleEventSubscriber;
+import edu.uci.ics.asterix.common.feeds.api.IFeedLifecycleListener;
+import edu.uci.ics.asterix.common.feeds.api.IIntakeProgressTracker;
+import edu.uci.ics.asterix.common.feeds.message.StorageReportFeedMessage;
+import edu.uci.ics.asterix.metadata.MetadataManager;
+import edu.uci.ics.asterix.metadata.MetadataTransactionContext;
+import edu.uci.ics.asterix.metadata.cluster.AddNodeWork;
+import edu.uci.ics.asterix.metadata.cluster.ClusterManager;
+import edu.uci.ics.asterix.metadata.feeds.FeedCollectOperatorDescriptor;
+import edu.uci.ics.asterix.metadata.feeds.FeedIntakeOperatorDescriptor;
+import edu.uci.ics.asterix.om.util.AsterixAppContextInfo;
+import edu.uci.ics.asterix.om.util.AsterixClusterProperties;
+import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+import edu.uci.ics.hyracks.api.dataflow.IOperatorDescriptor;
+import edu.uci.ics.hyracks.api.exceptions.HyracksException;
+import edu.uci.ics.hyracks.api.job.IActivityClusterGraphGeneratorFactory;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+/**
+ * A listener that subscribes to events associated with cluster membership
+ * (nodes joining/leaving the cluster) and job lifecycle (start/end of a job).
+ * Subscription to such events allows keeping track of feed ingestion jobs and
+ * take any corrective action that may be required when a node involved in a
+ * feed leaves the cluster.
+ */
+public class FeedLifecycleListener implements IFeedLifecycleListener {
+
+    private static final Logger LOGGER = Logger.getLogger(FeedLifecycleListener.class.getName());
+
+    public static FeedLifecycleListener INSTANCE = new FeedLifecycleListener();
+
+    private final LinkedBlockingQueue<Message> jobEventInbox;
+    private final LinkedBlockingQueue<IClusterManagementWorkResponse> responseInbox;
+    private final Map<FeedCollectInfo, List<String>> dependentFeeds = new HashMap<FeedCollectInfo, List<String>>();
+    private final Map<FeedConnectionId, LinkedBlockingQueue<String>> feedReportQueue;
+    private final FeedJobNotificationHandler feedJobNotificationHandler;
+    private final FeedWorkRequestResponseHandler feedWorkRequestResponseHandler;
+    private final ExecutorService executorService;
+
+    private ClusterState state;
+
+    private FeedLifecycleListener() {
+        this.jobEventInbox = new LinkedBlockingQueue<Message>();
+        this.feedJobNotificationHandler = new FeedJobNotificationHandler(jobEventInbox);
+        this.responseInbox = new LinkedBlockingQueue<IClusterManagementWorkResponse>();
+        this.feedWorkRequestResponseHandler = new FeedWorkRequestResponseHandler(responseInbox);
+        this.feedReportQueue = new HashMap<FeedConnectionId, LinkedBlockingQueue<String>>();
+        this.executorService = Executors.newCachedThreadPool();
+        this.executorService.execute(feedJobNotificationHandler);
+        this.executorService.execute(feedWorkRequestResponseHandler);
+        ClusterManager.INSTANCE.registerSubscriber(this);
+        this.state = AsterixClusterProperties.INSTANCE.getState();
+    }
+
+    @Override
+    public void notifyJobStart(JobId jobId) throws HyracksException {
+        if (feedJobNotificationHandler.isRegisteredFeedJob(jobId)) {
+            jobEventInbox.add(new Message(jobId, Message.MessageKind.JOB_START));
+        }
+    }
+
+    @Override
+    public void notifyJobFinish(JobId jobId) throws HyracksException {
+        if (feedJobNotificationHandler.isRegisteredFeedJob(jobId)) {
+            jobEventInbox.add(new Message(jobId, Message.MessageKind.JOB_FINISH));
+        } else {
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info("NO NEED TO NOTIFY JOB FINISH!");
+            }
+        }
+    }
+
+    public FeedConnectJobInfo getFeedConnectJobInfo(FeedConnectionId connectionId) {
+        return feedJobNotificationHandler.getFeedConnectJobInfo(connectionId);
+    }
+
+    public void registerFeedIntakeProgressTracker(FeedConnectionId connectionId,
+            IIntakeProgressTracker feedIntakeProgressTracker) {
+        feedJobNotificationHandler.registerFeedIntakeProgressTracker(connectionId, feedIntakeProgressTracker);
+    }
+
+    public void deregisterFeedIntakeProgressTracker(FeedConnectionId connectionId) {
+        feedJobNotificationHandler.deregisterFeedIntakeProgressTracker(connectionId);
+    }
+
+    public void updateTrackingInformation(StorageReportFeedMessage srm) {
+        feedJobNotificationHandler.updateTrackingInformation(srm);
+    }
+
+    /*
+     * Traverse job specification to categorize job as a feed intake job or a feed collection job 
+     */
+    @Override
+    public void notifyJobCreation(JobId jobId, IActivityClusterGraphGeneratorFactory acggf) throws HyracksException {
+        JobSpecification spec = acggf.getJobSpecification();
+        FeedConnectionId feedConnectionId = null;
+        Map<String, String> feedPolicy = null;
+        for (IOperatorDescriptor opDesc : spec.getOperatorMap().values()) {
+            if (opDesc instanceof FeedCollectOperatorDescriptor) {
+                feedConnectionId = ((FeedCollectOperatorDescriptor) opDesc).getFeedConnectionId();
+                feedPolicy = ((FeedCollectOperatorDescriptor) opDesc).getFeedPolicyProperties();
+                feedJobNotificationHandler.registerFeedCollectionJob(
+                        ((FeedCollectOperatorDescriptor) opDesc).getSourceFeedId(), feedConnectionId, jobId, spec,
+                        feedPolicy);
+                break;
+            } else if (opDesc instanceof FeedIntakeOperatorDescriptor) {
+                feedJobNotificationHandler.registerFeedIntakeJob(((FeedIntakeOperatorDescriptor) opDesc).getFeedId(),
+                        jobId, spec);
+                break;
+            }
+        }
+    }
+
+    public void setJobState(FeedConnectionId connectionId, FeedJobState jobState) {
+        feedJobNotificationHandler.setJobState(connectionId, jobState);
+    }
+
+    public FeedJobState getFeedJobState(FeedConnectionId connectionId) {
+        return feedJobNotificationHandler.getFeedJobState(connectionId);
+    }
+
+    public static class Message {
+        public JobId jobId;
+
+        public enum MessageKind {
+            JOB_START,
+            JOB_FINISH
+        }
+
+        public MessageKind messageKind;
+
+        public Message(JobId jobId, MessageKind msgKind) {
+            this.jobId = jobId;
+            this.messageKind = msgKind;
+        }
+    }
+
+    @Override
+    public Set<IClusterManagementWork> notifyNodeFailure(Set<String> deadNodeIds) {
+        Set<IClusterManagementWork> workToBeDone = new HashSet<IClusterManagementWork>();
+
+        Collection<FeedIntakeInfo> intakeInfos = feedJobNotificationHandler.getFeedIntakeInfos();
+        Collection<FeedConnectJobInfo> connectJobInfos = feedJobNotificationHandler.getFeedConnectInfos();
+
+        Map<String, List<FeedJobInfo>> impactedJobs = new HashMap<String, List<FeedJobInfo>>();
+
+        for (String deadNode : deadNodeIds) {
+            for (FeedIntakeInfo intakeInfo : intakeInfos) {
+                if (intakeInfo.getIntakeLocation().contains(deadNode)) {
+                    List<FeedJobInfo> infos = impactedJobs.get(deadNode);
+                    if (infos == null) {
+                        infos = new ArrayList<FeedJobInfo>();
+                        impactedJobs.put(deadNode, infos);
+                    }
+                    infos.add(intakeInfo);
+                    intakeInfo.setState(FeedJobState.UNDER_RECOVERY);
+                }
+            }
+
+            for (FeedConnectJobInfo connectInfo : connectJobInfos) {
+                if (connectInfo.getStorageLocations().contains(deadNode)) {
+                    continue;
+                }
+                if (connectInfo.getComputeLocations().contains(deadNode)
+                        || connectInfo.getCollectLocations().contains(deadNode)) {
+                    List<FeedJobInfo> infos = impactedJobs.get(deadNode);
+                    if (infos == null) {
+                        infos = new ArrayList<FeedJobInfo>();
+                        impactedJobs.put(deadNode, infos);
+                    }
+                    infos.add(connectInfo);
+                    connectInfo.setState(FeedJobState.UNDER_RECOVERY);
+                    feedJobNotificationHandler.deregisterFeedActivity(connectInfo);
+                }
+            }
+
+        }
+
+        if (impactedJobs.size() > 0) {
+            AddNodeWork addNodeWork = new AddNodeWork(deadNodeIds, deadNodeIds.size(), this);
+            feedWorkRequestResponseHandler.registerFeedWork(addNodeWork.getWorkId(), impactedJobs);
+            workToBeDone.add(addNodeWork);
+        }
+        return workToBeDone;
+
+    }
+
+    public static class FailureReport {
+
+        private final List<Pair<FeedConnectJobInfo, List<String>>> recoverableConnectJobs;
+        private final Map<IFeedJoint, List<String>> recoverableIntakeFeedIds;
+
+        public FailureReport(Map<IFeedJoint, List<String>> recoverableIntakeFeedIds,
+                List<Pair<FeedConnectJobInfo, List<String>>> recoverableSubscribers) {
+            this.recoverableConnectJobs = recoverableSubscribers;
+            this.recoverableIntakeFeedIds = recoverableIntakeFeedIds;
+        }
+
+        public List<Pair<FeedConnectJobInfo, List<String>>> getRecoverableSubscribers() {
+            return recoverableConnectJobs;
+        }
+
+        public Map<IFeedJoint, List<String>> getRecoverableIntakeFeedIds() {
+            return recoverableIntakeFeedIds;
+        }
+
+    }
+
+    @Override
+    public Set<IClusterManagementWork> notifyNodeJoin(String joinedNodeId) {
+        ClusterState newState = AsterixClusterProperties.INSTANCE.getState();
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info(joinedNodeId + " joined the cluster. " + "Asterix state: " + newState);
+        }
+
+        boolean needToReActivateFeeds = !newState.equals(state) && (newState == ClusterState.ACTIVE);
+        if (needToReActivateFeeds) {
+            if (LOGGER.isLoggable(Level.INFO)) {
+                LOGGER.info(joinedNodeId + " Resuming loser feeds (if any)");
+            }
+            try {
+                FeedsActivator activator = new FeedsActivator();
+                (new Thread(activator)).start();
+            } catch (Exception e) {
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Exception in resuming feeds" + e.getMessage());
+                }
+            }
+            state = newState;
+        } else {
+            List<FeedCollectInfo> feedsThatCanBeRevived = new ArrayList<FeedCollectInfo>();
+            for (Entry<FeedCollectInfo, List<String>> entry : dependentFeeds.entrySet()) {
+                List<String> requiredNodeIds = entry.getValue();
+                if (requiredNodeIds.contains(joinedNodeId)) {
+                    requiredNodeIds.remove(joinedNodeId);
+                    if (requiredNodeIds.isEmpty()) {
+                        feedsThatCanBeRevived.add(entry.getKey());
+                    }
+                }
+            }
+            if (!feedsThatCanBeRevived.isEmpty()) {
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info(joinedNodeId + " Resuming feeds after rejoining of node " + joinedNodeId);
+                }
+                FeedsActivator activator = new FeedsActivator(feedsThatCanBeRevived);
+                (new Thread(activator)).start();
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public void notifyRequestCompletion(IClusterManagementWorkResponse response) {
+        try {
+            responseInbox.put(response);
+        } catch (InterruptedException e) {
+            if (LOGGER.isLoggable(Level.WARNING)) {
+                LOGGER.warning("Interrupted exception");
+            }
+        }
+    }
+
+    @Override
+    public void notifyStateChange(ClusterState previousState, ClusterState newState) {
+        switch (newState) {
+            case ACTIVE:
+                if (previousState.equals(ClusterState.UNUSABLE)) {
+                    try {
+                        FeedsActivator activator = new FeedsActivator();
+                        // (new Thread(activator)).start();
+                    } catch (Exception e) {
+                        if (LOGGER.isLoggable(Level.INFO)) {
+                            LOGGER.info("Exception in resuming feeds" + e.getMessage());
+                        }
+                    }
+                }
+                break;
+        }
+
+    }
+
+    public static class FeedsDeActivator implements Runnable {
+
+        private List<FeedConnectJobInfo> failedConnectjobs;
+
+        public FeedsDeActivator(List<FeedConnectJobInfo> failedConnectjobs) {
+            this.failedConnectjobs = failedConnectjobs;
+        }
+
+        @Override
+        public void run() {
+            for (FeedConnectJobInfo failedConnectJob : failedConnectjobs) {
+                endFeed(failedConnectJob);
+            }
+        }
+
+        private void endFeed(FeedConnectJobInfo cInfo) {
+            MetadataTransactionContext ctx = null;
+            PrintWriter writer = new PrintWriter(System.out, true);
+            SessionConfig pc = new SessionConfig(writer, OutputFormat.ADM);
+
+            try {
+                ctx = MetadataManager.INSTANCE.beginTransaction();
+                FeedId feedId = cInfo.getConnectionId().getFeedId();
+                DisconnectFeedStatement stmt = new DisconnectFeedStatement(new Identifier(feedId.getDataverse()),
+                        new Identifier(feedId.getFeedName()), new Identifier(cInfo.getConnectionId().getDatasetName()));
+                List<Statement> statements = new ArrayList<Statement>();
+                DataverseDecl dataverseDecl = new DataverseDecl(new Identifier(feedId.getDataverse()));
+                statements.add(dataverseDecl);
+                statements.add(stmt);
+                AqlTranslator translator = new AqlTranslator(statements, pc);
+                translator.compileAndExecute(AsterixAppContextInfo.getInstance().getHcc(), null,
+                        AqlTranslator.ResultDelivery.SYNC);
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("End irrecoverable feed: " + cInfo.getConnectionId());
+                }
+                MetadataManager.INSTANCE.commitTransaction(ctx);
+            } catch (Exception e) {
+                if (LOGGER.isLoggable(Level.INFO)) {
+                    LOGGER.info("Exception in ending loser feed: " + cInfo.getConnectionId() + " Exception "
+                            + e.getMessage());
+                }
+                e.printStackTrace();
+                try {
+                    MetadataManager.INSTANCE.abortTransaction(ctx);
+                } catch (Exception e2) {
+                    e2.addSuppressed(e);
+                    if (LOGGER.isLoggable(Level.SEVERE)) {
+                        LOGGER.severe("Exception in aborting transaction! System is in inconsistent state");
+                    }
+                }
+
+            }
+
+        }
+    }
+
+    public void submitFeedConnectionRequest(IFeedJoint feedPoint, FeedConnectionRequest subscriptionRequest)
+            throws Exception {
+        feedJobNotificationHandler.submitFeedConnectionRequest(feedPoint, subscriptionRequest);
+    }
+
+    @Override
+    public List<FeedConnectionId> getActiveFeedConnections(FeedId feedId) {
+        List<FeedConnectionId> connections = new ArrayList<FeedConnectionId>();
+        Collection<FeedConnectionId> activeConnections = feedJobNotificationHandler.getActiveFeedConnections();
+        if (feedId != null) {
+            for (FeedConnectionId connectionId : activeConnections) {
+                if (connectionId.getFeedId().equals(feedId)) {
+                    connections.add(connectionId);
+                }
+            }
+        } else {
+            connections.addAll(activeConnections);
+        }
+        return connections;
+    }
+
+    @Override
+    public List<String> getComputeLocations(FeedId feedId) {
+        return feedJobNotificationHandler.getFeedComputeLocations(feedId);
+    }
+
+    @Override
+    public List<String> getIntakeLocations(FeedId feedId) {
+        return feedJobNotificationHandler.getFeedIntakeLocations(feedId);
+    }
+
+    @Override
+    public List<String> getStoreLocations(FeedConnectionId feedConnectionId) {
+        return feedJobNotificationHandler.getFeedStorageLocations(feedConnectionId);
+    }
+
+    @Override
+    public List<String> getCollectLocations(FeedConnectionId feedConnectionId) {
+        return feedJobNotificationHandler.getFeedCollectLocations(feedConnectionId);
+    }
+
+    @Override
+    public boolean isFeedConnectionActive(FeedConnectionId connectionId) {
+        return feedJobNotificationHandler.isFeedConnectionActive(connectionId);
+    }
+
+    public void reportPartialDisconnection(FeedConnectionId connectionId) {
+        feedJobNotificationHandler.removeFeedJointsPostPipelineTermination(connectionId);
+    }
+
+    public void registerFeedReportQueue(FeedConnectionId feedId, LinkedBlockingQueue<String> queue) {
+        feedReportQueue.put(feedId, queue);
+    }
+
+    public void deregisterFeedReportQueue(FeedConnectionId feedId, LinkedBlockingQueue<String> queue) {
+        feedReportQueue.remove(feedId);
+    }
+
+    public LinkedBlockingQueue<String> getFeedReportQueue(FeedConnectionId feedId) {
+        return feedReportQueue.get(feedId);
+    }
+
+    @Override
+    public IFeedJoint getAvailableFeedJoint(FeedJointKey feedJointKey) {
+        return feedJobNotificationHandler.getAvailableFeedJoint(feedJointKey);
+    }
+
+    @Override
+    public boolean isFeedJointAvailable(FeedJointKey feedJointKey) {
+        return feedJobNotificationHandler.isFeedPointAvailable(feedJointKey);
+    }
+
+    public void registerFeedJoint(IFeedJoint feedJoint) {
+        feedJobNotificationHandler.registerFeedJoint(feedJoint);
+    }
+
+    public IFeedJoint getFeedJoint(FeedJointKey feedJointKey) {
+        return feedJobNotificationHandler.getFeedJoint(feedJointKey);
+    }
+
+    public void registerFeedEventSubscriber(FeedConnectionId connectionId, IFeedLifecycleEventSubscriber subscriber) {
+        feedJobNotificationHandler.registerFeedEventSubscriber(connectionId, subscriber);
+    }
+
+    public void deregisterFeedEventSubscriber(FeedConnectionId connectionId, IFeedLifecycleEventSubscriber subscriber) {
+        feedJobNotificationHandler.deregisterFeedEventSubscriber(connectionId, subscriber);
+
+    }
+
+    public JobSpecification getCollectJobSpecification(FeedConnectionId connectionId) {
+        return feedJobNotificationHandler.getCollectJobSpecification(connectionId);
+    }
+
+    public JobId getFeedCollectJobId(FeedConnectionId connectionId) {
+        return feedJobNotificationHandler.getFeedCollectJobId(connectionId);
+    }
+
+}


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