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From ph...@apache.org
Subject svn commit: r766107 - in /hadoop/zookeeper/trunk: ./ src/java/main/org/apache/jute/ src/java/main/org/apache/zookeeper/server/persistence/ src/java/main/org/apache/zookeeper/server/util/ src/java/test/data/invalidsnap/ src/java/test/data/invalidsnap/ve...
Date Fri, 17 Apr 2009 18:11:48 GMT
Author: phunt
Date: Fri Apr 17 18:11:43 2009
New Revision: 766107

URL: http://svn.apache.org/viewvc?rev=766107&view=rev
Log:
ZOOKEEPER-367. RecoveryTest failure - 'unreasonable length' IOException

Added:
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.1   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.274   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.63b   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.0   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.272   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.639   (with props)
    hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.83f   (with props)
    hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java
  (with props)
Modified:
    hadoop/zookeeper/trunk/CHANGES.txt
    hadoop/zookeeper/trunk/build.xml
    hadoop/zookeeper/trunk/src/java/main/org/apache/jute/BinaryInputArchive.java
    hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/persistence/FileSnap.java
    hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/util/SerializeUtils.java
    hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/CRCTest.java

Modified: hadoop/zookeeper/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/CHANGES.txt?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/CHANGES.txt (original)
+++ hadoop/zookeeper/trunk/CHANGES.txt Fri Apr 17 18:11:43 2009
@@ -37,22 +37,26 @@
   ZOOKEEPER-360. WeakHashMap in Bookie.java causes NPE (flavio via mahadev)
   
   ZOOKEEPER-362. Issues with FLENewEpochTest. (fix bug in Fast leader election)
-(flavio via mahadev)
+  (flavio via mahadev)
 
   ZOOKEEPER-363. NPE when recovering ledger with no hint. (flavio via mahadev)
 
-  ZOOKEEPER-370. Fix critical problems reported by findbugs. (flavio via mahadev)
+  ZOOKEEPER-370. Fix critical problems reported by findbugs.
+  (flavio via mahadev)
 
   ZOOKEEPER-347. zkfuse uses non-standard String. (patrick hunt via mahadev)
 
-  ZOOKEEPER-355. make validatePath non public in Zookeeper client api. (phunt
-via mahadev)
+  ZOOKEEPER-355. make validatePath non public in Zookeeper client api.
+  (phunt via mahadev)
 
   ZOOKEEPER-374. Uninitialized struct variable in C causes warning which 
-is treated as an error (phunt via mahadev)
+  is treated as an error (phunt via mahadev)
 
   ZOOKEEPER-337. improve logging in leader election lookForLeader method when
-address resolution fails (phunt via mahadev)
+  address resolution fails (phunt via mahadev)
+
+  ZOOKEEPER-367. RecoveryTest failure - "unreasonable length" IOException
+  (mahadev via phunt)
 
 IMPROVEMENTS:
   ZOOKEEPER-308. improve the atomic broadcast performance 3x.
@@ -66,14 +70,14 @@
 
   ZOOKEEPER-351. to run checkstyle (giridharan kesavan via mahadev)
 
-  ZOOKEEPER-350. to run rats for releaseaudit. (giridharan kesavan via
-mahadev)
+  ZOOKEEPER-350. to run rats for releaseaudit.
+  (giridharan kesavan via mahadev)
 
   ZOOKEEPER-352. to add standard ant targets required by test-patch.sh script
-(giridharan kesavan via mahadev)
+  (giridharan kesavan via mahadev)
 
-  ZOOKEEPER-353. javadoc warnings needs to be fixed. (giridharan kesavan via
-mahadev) 
+  ZOOKEEPER-353. javadoc warnings needs to be fixed.
+  (giridharan kesavan via mahadev) 
 
   ZOOKEEPER-354.  to fix javadoc warning in the source files. (mahadev)
 
@@ -82,16 +86,16 @@
   ZOOKEEPER-288. Cleanup and fixes to BookKeeper (flavio via mahadev)
  
   ZOOKEEPER-305.  Replace timers with semaphores in FLENewEpochTest.
-(flavio via mahadev)
+  (flavio via mahadev)
 
-  ZOOKEEPER-60. Get cppunit tests running as part of Hudson CI. (girish via
-mahadev)
+  ZOOKEEPER-60. Get cppunit tests running as part of Hudson CI.
+  (girish via mahadev)
 
   ZOOKEEPER-343. add tests that specifically verify the zkmain and 
-qpmain classes. (phunt via mahadev)
+  qpmain classes. (phunt via mahadev)
 
-  ZOOKEEPER-361. integrate cppunit testing as part of hudson patch 
-process. (giri via mahadev)
+  ZOOKEEPER-361. integrate cppunit testing as part of hudson patch process.
+  (giri via mahadev)
 
 NEW FEATURES:
 

Modified: hadoop/zookeeper/trunk/build.xml
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/build.xml?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/build.xml (original)
+++ hadoop/zookeeper/trunk/build.xml Fri Apr 17 18:11:43 2009
@@ -55,6 +55,7 @@
     <property name="test.log.dir" value="${test.build.dir}/logs" />
     <property name="test.data.dir" value="${test.build.dir}/data" />
     <property name="test.data.upgrade.dir" value="${test.data.dir}/upgrade" />
+    <property name="test.data.invalid.dir" value="${test.data.dir}/invalidsnap" />
     <property name="test.cppunit.dir" value="${test.build.dir}/test-cppunit"/>
     <property name="test.tmp.dir" value="${test.build.dir}/tmp" />
     <property name="test.output" value="no" />
@@ -534,14 +535,20 @@
         <delete dir="${test.log.dir}" />
         <delete dir="${test.tmp.dir}" />
         <delete dir="${test.data.upgrade.dir}" />
+        <delete dir="${test.data.invalid.dir}" />
         <delete dir="${test.data.dir}" />
         <mkdir dir="${test.log.dir}" />
         <mkdir dir="${test.tmp.dir}" />
         <mkdir dir="${test.data.dir}" />
         <mkdir dir="${test.data.upgrade.dir}" />
+        <mkdir dir="${test.data.invalid.dir}" />
         <copy todir="${test.data.upgrade.dir}">
             <fileset dir="${basedir}/src/java/test/data/upgrade"/>
-        </copy> 
+        </copy>
+        <copy todir="${test.data.invalid.dir}">
+            <fileset dir="${basedir}/src/java/test/data/invalidsnap"/>
+        </copy>
+       
     </target>
 
     <target name="junit.run">

Modified: hadoop/zookeeper/trunk/src/java/main/org/apache/jute/BinaryInputArchive.java
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/main/org/apache/jute/BinaryInputArchive.java?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/src/java/main/org/apache/jute/BinaryInputArchive.java (original)
+++ hadoop/zookeeper/trunk/src/java/main/org/apache/jute/BinaryInputArchive.java Fri Apr 17
18:11:43 2009
@@ -98,7 +98,7 @@
         int len = readInt(tag);
         if (len == -1) return null;
         if (len < 0 || len > maxBuffer) {
-            throw new RuntimeException("Unreasonable length = " + len);
+            throw new IOException("Unreasonable length = " + len);
         }
         byte[] arr = new byte[len];
         in.readFully(arr);

Modified: hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/persistence/FileSnap.java
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/persistence/FileSnap.java?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/persistence/FileSnap.java
(original)
+++ hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/persistence/FileSnap.java
Fri Apr 17 18:11:43 2009
@@ -64,22 +64,44 @@
      */
     public long deserialize(DataTree dt, Map<Long, Integer> sessions)
             throws IOException {
-        File snap = findMostRecentSnapshot();
-        if (snap == null) {
+        // we run through 100 snapshots (not all of them)
+        // if we cannot get it running within 100 snapshots
+        // we should  give up
+        List<File> snapList = findNValidSnapshots(100);
+        if (snapList.size() == 0) {
             return -1L;
         }
-        LOG.info("Reading snapshot " + snap);
-        InputStream snapIS = new BufferedInputStream(new FileInputStream(snap));
-        CheckedInputStream crcIn = new CheckedInputStream(snapIS, new Adler32());
-        InputArchive ia=BinaryInputArchive.getArchive(crcIn);
-        deserialize(dt,sessions, ia);
-        long checkSum = crcIn.getChecksum().getValue();
-        long val = ia.readLong("val");
-        if (val != checkSum) {
-            throw new IOException("CRC corruption in snapshot :  " + snap);
+        File snap = null;
+        boolean foundValid = false;
+        for (int i = 0; i < snapList.size(); i++) {
+            snap = snapList.get(i);
+            InputStream snapIS = null;
+            CheckedInputStream crcIn = null;
+            try {
+                LOG.info("Reading snapshot " + snap);
+                snapIS = new BufferedInputStream(new FileInputStream(snap));
+                crcIn = new CheckedInputStream(snapIS, new Adler32());
+                InputArchive ia = BinaryInputArchive.getArchive(crcIn);
+                deserialize(dt,sessions, ia);
+                long checkSum = crcIn.getChecksum().getValue();
+                long val = ia.readLong("val");
+                if (val != checkSum) {
+                    throw new IOException("CRC corruption in snapshot :  " + snap);
+                }
+                foundValid = true;
+                break;
+            } catch(IOException e) {
+                LOG.warn("problem reading snap file " + snap, e);
+            } finally {
+                if (snapIS != null) 
+                    snapIS.close();
+                if (crcIn != null) 
+                    crcIn.close();
+            } 
+        }
+        if (!foundValid) {
+            throw new IOException("Not able to find valid snapshots in " + snapDir);
         }
-        snapIS.close();
-        crcIn.close();
         dt.lastProcessedZxid = Util.getZxidFromName(snap.getName(), "snapshot");
         return dt.lastProcessedZxid;
     }
@@ -91,7 +113,7 @@
      * @param ia the input archive to restore from
      * @throws IOException
      */
-    protected void deserialize(DataTree dt, Map<Long, Integer> sessions,
+    public void deserialize(DataTree dt, Map<Long, Integer> sessions,
             InputArchive ia) throws IOException {
         FileHeader header = new FileHeader();
         header.deserialize(ia, "fileheader");
@@ -108,23 +130,51 @@
      * @return the file containing the most recent snapshot
      */
     public File findMostRecentSnapshot() throws IOException {
-        List<File> files = Util.sortDataDir(snapDir.listFiles(), "snapshot", false);
+        List<File> files = findNValidSnapshots(1);
+        if (files.size() == 0) {
+            return null;
+        }
+        return files.get(0);
+    }
+    
+    /**
+     * find the last (maybe) valid n snapshots. this does some 
+     * minor checks on the validity of the snapshots. It just
+     * checks for / at the end of the snapshot. This does
+     * not mean that the snapshot is truly valid but is
+     * valid with a high probability. also, the most recent 
+     * will be first on the list. 
+     * @param n the number of most recent snapshots
+     * @return the last n snapshots (the number might be
+     * less than n in case enough snapshots are not available).
+     * @throws IOException
+     */
+    private List<File> findNValidSnapshots(int n) throws IOException {
+        List<File> files = Util.sortDataDir(snapDir.listFiles(),"snapshot", false);
+        int count = 0;
+        List<File> list = new ArrayList<File>();
         for (File f : files) {
-            // we should catch the exceptions from 
-            // the valid snapshot and continue
+            // we should catch the exceptions
+            // from the valid snapshot and continue
             // until we find a valid one
             try {
-                if(Util.isValidSnapshot(f))
-                    return f;
-            } catch(IOException e) {
+                if (Util.isValidSnapshot(f)) {
+                    list.add(f);
+                    count++;
+                    if (count == n) {
+                        break;
+                    }
+                }
+            } catch (IOException e) {
                 LOG.info("invalid snapshot " + f, e);
             }
         }
-        return null;
+        return list;
     }
-    
+
     /**
-     * find the last n snapshots.
+     * find the last n snapshots. this does not have
+     * any checks if the snapshot might be valid or not
      * @param the number of most recent snapshots 
      * @return the last n snapshots
      * @throws IOException

Modified: hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/util/SerializeUtils.java
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/util/SerializeUtils.java?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/util/SerializeUtils.java
(original)
+++ hadoop/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/util/SerializeUtils.java
Fri Apr 17 18:11:43 2009
@@ -78,25 +78,17 @@
 
     public static void deserializeSnapshot(DataTree dt,InputArchive ia,
             Map<Long, Integer> sessions) throws IOException {
-        try {
-            int count = ia.readInt("count");
-            while (count > 0) {
-                long id = ia.readLong("id");
-                int to = ia.readInt("timeout");
-                sessions.put(id, to);
-                ZooTrace.logTraceMessage(LOG, ZooTrace.SESSION_TRACE_MASK,
-                                         "loadData --- session in archive: " + id
-                                         + " with timeout: " + to);
-                count--;
-            }
-            dt.deserialize(ia, "tree");
-        } catch(IOException e) {
-            throw e;
-        } catch(Exception e) {
-            IOException ioe = new IOException(e.getMessage());
-            ioe.initCause(e);
-            throw ioe;
+        int count = ia.readInt("count");
+        while (count > 0) {
+            long id = ia.readLong("id");
+            int to = ia.readInt("timeout");
+            sessions.put(id, to);
+            ZooTrace.logTraceMessage(LOG, ZooTrace.SESSION_TRACE_MASK,
+                    "loadData --- session in archive: " + id
+                    + " with timeout: " + to);
+            count--;
         }
+        dt.deserialize(ia, "tree");
     }
 
     public static void serializeSnapshot(DataTree dt,OutputArchive oa,

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.1
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.1?rev=766107&view=auto
==============================================================================
Binary file - no diff available.

Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.1
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.274
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.274?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.274
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.63b
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.63b?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/log.63b
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.0
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.0?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.0
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.272
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.272?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.272
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.639
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.639?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.639
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Added: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.83f
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.83f?rev=766107&view=auto
==============================================================================
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Propchange: hadoop/zookeeper/trunk/src/java/test/data/invalidsnap/version-2/snapshot.83f
------------------------------------------------------------------------------
    svn:mime-type = application/octet-stream

Modified: hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/CRCTest.java
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/CRCTest.java?rev=766107&r1=766106&r2=766107&view=diff
==============================================================================
--- hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/CRCTest.java (original)
+++ hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/CRCTest.java Fri Apr
17 18:11:43 2009
@@ -20,15 +20,22 @@
 
 import static org.apache.zookeeper.test.ClientBase.CONNECTION_TIMEOUT;
 
+import java.io.BufferedInputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.RandomAccessFile;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CountDownLatch;
+import java.util.zip.Adler32;
+import java.util.zip.CheckedInputStream;
 
 import junit.framework.TestCase;
 
+import org.apache.jute.BinaryInputArchive;
+import org.apache.jute.InputArchive;
 import org.apache.log4j.Logger;
 import org.apache.zookeeper.CreateMode;
 import org.apache.zookeeper.WatchedEvent;
@@ -133,13 +140,15 @@
         DataTree dt = new DataTree();
         Map<Long, Integer> sessions = 
             new ConcurrentHashMap<Long, Integer>();
-        try {   
-            snap.deserialize(dt, sessions);
-            assertTrue(false);
-        } catch(IOException ie) {
-            LOG.info("checksu failure in snapshot", ie);    
-        }
-         
+        InputStream snapIS = new BufferedInputStream(new FileInputStream(snapFile));
+        CheckedInputStream crcIn = new CheckedInputStream(snapIS, new Adler32());
+        InputArchive ia=BinaryInputArchive.getArchive(crcIn);
+        snap.deserialize(dt,sessions, ia);
+        long checkSum = crcIn.getChecksum().getValue();
+        long val = ia.readLong("val");
+        snapIS.close();
+        crcIn.close();
+        assertTrue(val != checkSum);
    }
     
     public void process(WatchedEvent event) {

Added: hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java
URL: http://svn.apache.org/viewvc/hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java?rev=766107&view=auto
==============================================================================
--- hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java
(added)
+++ hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java
Fri Apr 17 18:11:43 2009
@@ -0,0 +1,88 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.zookeeper.test;
+
+import static org.apache.zookeeper.test.ClientBase.CONNECTION_TIMEOUT;
+
+import java.io.File;
+import java.util.concurrent.CountDownLatch;
+
+import junit.framework.TestCase;
+
+import org.apache.log4j.Logger;
+import org.apache.zookeeper.WatchedEvent;
+import org.apache.zookeeper.Watcher;
+import org.apache.zookeeper.ZooKeeper;
+import org.apache.zookeeper.Watcher.Event.KeeperState;
+import org.apache.zookeeper.server.NIOServerCnxn;
+import org.apache.zookeeper.server.SyncRequestProcessor;
+import org.apache.zookeeper.server.ZooKeeperServer;
+
+public class InvalidSnapshotTest extends TestCase implements Watcher {
+    private final static Logger LOG = Logger.getLogger(UpgradeTest.class);
+    private static String HOSTPORT = "127.0.0.1:2359";
+    ZooKeeperServer zks;
+    private static final File testData = new File(
+            System.getProperty("test.data.dir", "build/test/data"));
+    private CountDownLatch startSignal;
+    
+    @Override
+    protected void setUp() throws Exception {
+        LOG.info("STARTING " + getName());
+    }
+    @Override
+    protected void tearDown() throws Exception {
+        LOG.info("FINISHED " + getName());
+    }
+    
+    /**
+     * test the snapshot
+     * @throws Exception
+     */
+    public void testSnapshot() throws Exception {
+        File snapDir = new File(testData, "invalidsnap");
+        zks = new ZooKeeperServer(snapDir, snapDir, 3000);
+        SyncRequestProcessor.snapCount = 1000;
+        final int PORT = Integer.parseInt(HOSTPORT.split(":")[1]);
+        NIOServerCnxn.Factory f = new NIOServerCnxn.Factory(PORT);
+        f.startup(zks);
+        LOG.info("starting up the zookeeper server .. waiting");
+        assertTrue("waiting for server being up", 
+                ClientBase.waitForServerUp(HOSTPORT,CONNECTION_TIMEOUT));
+        ZooKeeper zk = new ZooKeeper(HOSTPORT, 20000, this);
+        // we know this from the data files
+        // this node is the last node in the snapshot
+        
+        assertTrue(zk.exists("/9/9/8", false) != null);
+        f.shutdown();
+        assertTrue("waiting for server down",
+                   ClientBase.waitForServerDown(HOSTPORT,
+                           ClientBase.CONNECTION_TIMEOUT));
+        
+    }
+    
+    public void process(WatchedEvent event) {
+        LOG.info("Event:" + event.getState() + " " + event.getType() + " " + event.getPath());
+        if (event.getState() == KeeperState.SyncConnected
+                && startSignal != null && startSignal.getCount() > 0)
+        {              
+            startSignal.countDown();      
+        }
+    }
+}
\ No newline at end of file

Propchange: hadoop/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/InvalidSnapshotTest.java
------------------------------------------------------------------------------
    svn:eol-style = native



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