diff --git a/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpAnalyzer.java b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpAnalyzer.java
new file mode 100644
index 0000000000000000000000000000000000000000..3ee1b70a0b9c7fd242528d73c939e0c0f3030805
--- /dev/null
+++ b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpAnalyzer.java
@@ -0,0 +1,92 @@
+package com.dianping.cat.consumer.dump;
+
+import java.util.Collections;
+import java.util.Date;
+import java.util.Set;
+
+import org.codehaus.plexus.logging.LogEnabled;
+import org.codehaus.plexus.logging.Logger;
+
+import com.dianping.cat.configuration.NetworkInterfaceManager;
+import com.dianping.cat.message.spi.AbstractMessageAnalyzer;
+import com.dianping.cat.message.spi.MessagePathBuilder;
+import com.dianping.cat.message.spi.MessageTree;
+import com.site.lookup.annotation.Inject;
+
+public class DumpAnalyzer extends AbstractMessageAnalyzer<Object> implements LogEnabled {
+	@Inject
+	private MessagePathBuilder m_builder;
+
+	@Inject
+	private DumpChannelManager m_manager;
+
+	private long m_extraTime;
+
+	private long m_startTime;
+
+	private long m_duration;
+
+	private Logger m_logger;
+
+	@Override
+	public void doCheckpoint(boolean atEnd) {
+		if (atEnd) {
+			m_manager.closeAllChannels();
+			// TODO upload to remote HDFS
+		}
+	}
+
+	@Override
+	public void enableLogging(Logger logger) {
+		m_logger = logger;
+	}
+
+	@Override
+	public Set<String> getDomains() {
+		return Collections.emptySet();
+	}
+
+	@Override
+	public Object getReport(String domain) {
+		throw new UnsupportedOperationException("This should not be called!");
+	}
+
+	@Override
+	protected boolean isTimeout() {
+		long currentTime = System.currentTimeMillis();
+		long endTime = m_startTime + m_duration + m_extraTime;
+
+		return currentTime > endTime;
+	}
+
+	@Override
+	protected void process(MessageTree tree) {
+		if (tree.getMessage() == null) {
+			return;
+		}
+
+		try {
+			String ipAddress = NetworkInterfaceManager.INSTANCE.getLocalHostAddress();
+			long timestamp = tree.getMessage().getTimestamp();
+			String domain = tree.getDomain();
+			String path = m_builder.getMessagePath(domain + "-" + ipAddress, new Date(timestamp));
+			DumpChannel channel = m_manager.openChannel(path, false);
+			int length = channel.write(tree);
+
+			if (length <= 0) {
+				m_manager.closeChannel(channel);
+
+				channel = m_manager.openChannel(path, true);
+				channel.write(tree);
+			}
+		} catch (Exception e) {
+			m_logger.error("Error when dumping to local file system!", e);
+		}
+	}
+
+	public void setAnalyzerInfo(long startTime, long duration, long extraTime) {
+		m_extraTime = extraTime;
+		m_startTime = startTime;
+		m_duration = duration;
+	}
+}
diff --git a/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannel.java b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannel.java
new file mode 100644
index 0000000000000000000000000000000000000000..3ab6d2ac82d453846062b2111b4464ba1f8f4619
--- /dev/null
+++ b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannel.java
@@ -0,0 +1,92 @@
+package com.dianping.cat.consumer.dump;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.zip.GZIPOutputStream;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+
+import com.dianping.cat.message.spi.MessageCodec;
+import com.dianping.cat.message.spi.MessageTree;
+import com.site.helper.Files;
+
+public class DumpChannel {
+	private MessageCodec m_codec;
+
+	private GZIPOutputStream m_out;
+
+	private File m_file;
+
+	private String m_path;
+
+	private long m_maxSize;
+
+	private long m_lastChunkAdjust = 100 * 1024L; // 100K
+
+	public DumpChannel(MessageCodec codec, File baseDir, String path, long maxSize, long lastChunkAdjust)
+	      throws IOException {
+		m_codec = codec;
+		m_file = new File(baseDir, path);
+		m_path = path;
+		m_maxSize = maxSize;
+		m_lastChunkAdjust = lastChunkAdjust;
+
+		m_file.getParentFile().mkdirs();
+		m_out = new GZIPOutputStream(new FileOutputStream(m_file));
+	}
+
+	public void close() {
+		try {
+			m_out.finish();
+			m_out.close();
+		} catch (IOException e) {
+			// ignore it
+		}
+	}
+
+	public void moveTo(File anotherBase) throws IOException {
+		File target = new File(anotherBase, m_path);
+
+		target.getParentFile().mkdirs();
+
+		boolean success = m_file.renameTo(target);
+
+		if (!success) {
+			Files.forIO().copy(new FileInputStream(m_file), new FileOutputStream(target));
+			m_file.delete();
+		}
+	}
+
+	public void setLastChunkAdjust(long lastChunkAdjust) {
+		m_lastChunkAdjust = lastChunkAdjust;
+	}
+
+	public int write(MessageTree tree) throws IOException {
+		ChannelBuffer buf = ChannelBuffers.dynamicBuffer(8192);
+
+		m_codec.encode(tree, buf);
+
+		int length = buf.readInt();
+		long count = m_file.length();
+
+		if (m_maxSize > 0 && count + m_lastChunkAdjust + length > m_maxSize) {
+			// exceed the max size
+			return 0;
+		}
+
+		buf.getBytes(buf.readerIndex(), m_out, length);
+
+		// a blank line used to separate two message trees
+		m_out.write('\n');
+		m_out.flush();
+
+		return length + 1;
+	}
+
+	public File getFile() {
+		return m_file;
+	}
+}
diff --git a/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannelManager.java b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannelManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..3d5fd2b232c4916b34f2636237fa34ac33ecc925
--- /dev/null
+++ b/cat-consumer/src/main/java/com/dianping/cat/consumer/dump/DumpChannelManager.java
@@ -0,0 +1,147 @@
+package com.dianping.cat.consumer.dump;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.codehaus.plexus.logging.LogEnabled;
+import org.codehaus.plexus.logging.Logger;
+import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable;
+import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException;
+
+import com.dianping.cat.configuration.ServerConfigManager;
+import com.dianping.cat.configuration.server.entity.HdfsConfig;
+import com.dianping.cat.configuration.server.entity.ServerConfig;
+import com.dianping.cat.configuration.server.entity.StorageConfig;
+import com.dianping.cat.message.spi.MessageCodec;
+import com.site.lookup.ContainerHolder;
+import com.site.lookup.annotation.Inject;
+
+public class DumpChannelManager extends ContainerHolder implements Initializable, LogEnabled {
+	private static final long DEFAULT_MAX_SIZE = 128 * 1024 * 1024L;
+
+	@Inject
+	private MessageCodec m_codec;
+
+	private Map<String, DumpChannel> m_channels = new HashMap<String, DumpChannel>();
+
+	private Map<String, Integer> m_indexes = new HashMap<String, Integer>();
+
+	private long m_maxSize = DEFAULT_MAX_SIZE / 1024 * 16;
+
+	private long m_lastChunkAdjust = 100 * 1024L; // 100K
+
+	private String m_baseDir = "target/dump";
+
+	private Logger m_logger;
+
+	public void closeAllChannels() {
+		for (DumpChannel channel : m_channels.values()) {
+			closeChannel(channel);
+		}
+
+		m_channels.clear();
+	}
+
+	public void closeChannel(DumpChannel channel) {
+		release(channel);
+		channel.close();
+
+		File outbox = new File(m_baseDir, "outbox");
+
+		outbox.mkdirs();
+
+		try {
+			channel.moveTo(outbox);
+		} catch (IOException e) {
+			m_logger.error(String.format("Error when moving file(%s) to directory(%s)!", channel.getFile(), outbox), e);
+		}
+	}
+
+	@Override
+	public void initialize() throws InitializationException {
+		ServerConfigManager configManager = lookup(ServerConfigManager.class);
+		ServerConfig config = configManager.getServerConfig();
+
+		if (config != null) {
+			StorageConfig storage = config.getStorage();
+			HdfsConfig hdfsConfig = storage.findHdfs("dump");
+
+			m_baseDir = storage.getLocalBaseDir();
+			m_maxSize = toLong(hdfsConfig == null ? null : hdfsConfig.getMaxSize(), DEFAULT_MAX_SIZE);
+		}
+	}
+
+	private DumpChannel makeChannel(String key, String path, boolean forceNew) throws IOException {
+		String file;
+
+		if (forceNew) {
+			Integer index = m_indexes.get(key);
+
+			if (index == null) {
+				index = 1;
+			}
+
+			index++;
+
+			file = path + "-" + index + ".gz";
+			m_indexes.put(key, index);
+		} else {
+			file = path + ".gz";
+		}
+
+		DumpChannel channel = new DumpChannel(m_codec, new File(m_baseDir, "draft"), file, m_maxSize, m_lastChunkAdjust);
+
+		m_channels.put(key, channel);
+		return channel;
+	}
+
+	public DumpChannel openChannel(String path, boolean forceNew) throws IOException {
+		DumpChannel channel = m_channels.get(path);
+
+		if (channel == null) {
+			synchronized (m_channels) {
+				channel = m_channels.get(path);
+
+				if (channel == null) {
+					channel = makeChannel(path, path, false);
+				}
+			}
+		} else if (forceNew) {
+			synchronized (m_channels) {
+				channel = makeChannel(path, path, true);
+			}
+		}
+
+		return channel;
+	}
+
+	private long toLong(String str, long defaultValue) {
+		long value = 0;
+		int len = str == null ? 0 : str.length();
+
+		for (int i = 0; i < len; i++) {
+			char ch = str.charAt(i);
+
+			if (Character.isDigit(ch)) {
+				value = value * 10L + (ch - '0');
+			} else if (ch == 'm' || ch == 'M') {
+				value *= 1024 * 1024L;
+			} else if (ch == 'k' || ch == 'K') {
+				value *= 1024L;
+			}
+		}
+
+		if (value > 0) {
+			return value;
+		} else {
+			return defaultValue;
+		}
+	}
+
+	@Override
+	public void enableLogging(Logger logger) {
+		m_logger = logger;
+	}
+}
diff --git a/cat-consumer/src/test/java/com/dianping/cat/consumer/dump/DumpAnalyzerTest.java b/cat-consumer/src/test/java/com/dianping/cat/consumer/dump/DumpAnalyzerTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..8f0afa6e8b6bd7acc091046e23545e67fce752f8
--- /dev/null
+++ b/cat-consumer/src/test/java/com/dianping/cat/consumer/dump/DumpAnalyzerTest.java
@@ -0,0 +1,66 @@
+package com.dianping.cat.consumer.dump;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import com.dianping.cat.consumer.AnalyzerFactory;
+import com.dianping.cat.message.Transaction;
+import com.dianping.cat.message.internal.DefaultTransaction;
+import com.dianping.cat.message.io.DefaultMessageQueue;
+import com.dianping.cat.message.spi.MessageAnalyzer;
+import com.dianping.cat.message.spi.internal.DefaultMessageTree;
+import com.site.lookup.ComponentTestCase;
+
+@RunWith(JUnit4.class)
+public class DumpAnalyzerTest extends ComponentTestCase {
+	@Test
+	public void test() throws Exception {
+		AnalyzerFactory factory = lookup(AnalyzerFactory.class);
+		long now = 1334041324150L;
+		DefaultMessageQueue queue = new DefaultMessageQueue();
+		int num = 1000000;
+
+		queue.setSize(num);
+		queue.initialize();
+
+		for (int i = 0; i < num; i++) {
+			queue.offer(newMessageTree(i, now + i * 10L));
+		}
+
+		MessageAnalyzer analyzer = factory.create("dump", now, 10 * 1000L, 10 * 1000L);
+
+		analyzer.analyze(queue);
+
+		analyzer.doCheckpoint(true);
+	}
+
+	private DefaultMessageTree newMessageTree(int i, long timestamp) {
+		DefaultMessageTree tree = new DefaultMessageTree();
+
+		tree.setDomain("domain");
+		tree.setHostName("hostName" + i);
+		tree.setIpAddress("ipAddress" + i);
+		tree.setMessageId(String.valueOf(i));
+		tree.setParentMessageId("parentMessageId" + i);
+		tree.setRootMessageId("rootMessageId" + i);
+		tree.setSessionToken("sessionToken");
+		tree.setThreadGroupName("threadGroupName");
+		tree.setThreadId("threadId" + i);
+		tree.setThreadName("threadName");
+
+		tree.setMessage(newTransaction("type", "name" + i, timestamp, "0", 123456 + i, "data" + i));
+		return tree;
+	}
+
+	private Transaction newTransaction(String type, String name, long timestamp, String status, int duration, String data) {
+		DefaultTransaction transaction = new DefaultTransaction(type, name, null);
+
+		transaction.setStatus(status);
+		transaction.addData(data);
+		transaction.complete();
+		transaction.setTimestamp(timestamp);
+		transaction.setDurationInMillis(duration);
+		return transaction;
+	}
+}