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From "Stuart Smith (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1587) JVM crash under writes: ExceptionMark destructor expects no pending exceptions
Date Thu, 20 Jan 2011 20:50:43 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984390#action_12984390
] 

Stuart Smith commented on HDFS-1587:
------------------------------------

I do have ECC RAM - but it could be bad hardware, it's pretty old. 
I've already had to put some flaky hard drives off to the side.

For now, I'm really in wait and see mode. 
I just logged this in case it repeats and I can narrow it down to a particular use of the
JVM.


> JVM crash under writes:   ExceptionMark destructor expects no pending exceptions
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-1587
>                 URL: https://issues.apache.org/jira/browse/HDFS-1587
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20.2
>         Environment: uname:Linux 2.6.32-25-generic #44-Ubuntu SMP Fri Sep 17 20:05:27
UTC 2010 x86_64
> libc:glibc 2.11.1 NPTL 2.11.1 
> rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 64000, AS infinity
> load average:0.32 0.25 0.20
> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 15 stepping 6, cmov,
cx8, fxsr, mmx, sse, sse2, sse3, ssse3
> Memory: 4k page, physical 4057424k(108876k free), swap 24009100k(24009100k free)
> vm_info: Java HotSpot(TM) 64-Bit Server VM (16.3-b01) for linux-amd64 JRE (1.6.0_20-b02),
built on Apr 12 2010 13:57:11 by "java_re" with gcc 3.2.2 (SuSE Linux)
> time: Wed Jan 19 13:01:35 2011
> elapsed time: 1983565 seconds
>            Reporter: Stuart Smith
>            Priority: Minor
>
> Datanode went down due to JVM fault.
> A decent number of reads/writes going on at the time.
> To be honest, I'm not too worried about this, because it hasn't happened too frequently.
> But I thought I'd just record it.
> hs_error_pid*log was:
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> #  Internal Error (exceptions.cpp:364), pid=1662, tid=140679121118992
> #  Error: ExceptionMark destructor expects no pending exceptions
> #
> # JRE version: 6.0_20-b02
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (16.3-b01 mixed mode linux-amd64 )
> # If you would like to submit a bug report, please visit:
> #   http://java.sun.com/webapps/bugreport/crash.jsp
> #
> ---------------  T H R E A D  ---------------
> Current thread (0x00007ff264330000):  JavaThread "IPC Server handler 0 on 50020" daemon
[_thread_in_vm, id=1755, stack(0x00007ff268faa000,0x00007ff2690ab000)]
> Stack: [0x00007ff268faa000,0x00007ff2690ab000],  sp=0x00007ff2690a4680,  free space=3e90000000000000018k
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
> V  [libjvm.so+0x70f420]
> V  [libjvm.so+0x2e43f6]
> V  [libjvm.so+0x3333fd]
> V  [libjvm.so+0x27ea18]
> V  [libjvm.so+0x27e062]
> V  [libjvm.so+0x27e0e6]
> V  [libjvm.so+0x27faf6]
> V  [libjvm.so+0x6a0c6f]
> V  [libjvm.so+0x69edbb]
> V  [libjvm.so+0x69dc51]
> V  [libjvm.so+0x69dc80]
> V  [libjvm.so+0x44251b]
> Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
> j  java.lang.ClassLoader.findBootstrapClass(Ljava/lang/String;)Ljava/lang/Class;+0
> j  java.lang.ClassLoader.findBootstrapClassOrNull(Ljava/lang/String;)Ljava/lang/Class;+12
> j  java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+32
> j  java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+23
> j  sun.misc.Launcher$AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+41
> j  java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+3
> j  java.util.ResourceBundle$RBClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+10
> j  java.util.ResourceBundle$Control.newBundle(Ljava/lang/String;Ljava/util/Locale;Ljava/lang/String;Ljava/lang/ClassLoader;Z)Ljava/util/ResourceBundle;+24
> j  java.util.ResourceBundle.loadBundle(Ljava/util/ResourceBundle$CacheKey;Ljava/util/List;Ljava/util/ResourceBundle$Control;Z)Ljava/util/ResourceBundle;+54
> j  java.util.ResourceBundle.findBundle(Ljava/util/ResourceBundle$CacheKey;Ljava/util/List;Ljava/util/List;ILjava/util/ResourceBundle$Control;Ljava/util/ResourceBundle;)Ljava/util/ResourceBundle;+213
> j  java.util.ResourceBundle.findBundle(Ljava/util/ResourceBundle$CacheKey;Ljava/util/List;Ljava/util/List;ILjava/util/ResourceBundle$Control;Ljava/util/ResourceBundle;)Ljava/util/ResourceBundle;+37
> j  java.util.ResourceBundle.getBundleImpl(Ljava/lang/String;Ljava/util/Locale;Ljava/lang/ClassLoader;Ljava/util/ResourceBundle$Control;)Ljava/util/ResourceBundle;+187
> j  java.util.ResourceBundle.getBundle(Ljava/lang/String;)Ljava/util/ResourceBundle;+10
> j  com.sun.security.auth.PolicyFile$1.run()Ljava/lang/Object;+2
> v  ~StubRoutines::call_stub
> j  java.security.AccessController.doPrivileged(Ljava/security/PrivilegedAction;)Ljava/lang/Object;+0
> j  com.sun.security.auth.PolicyFile.<clinit>()V+7
> v  ~StubRoutines::call_stub
> j  java.lang.Class.forName0(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;+0
> j  java.lang.Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;+32
> j  javax.security.auth.Policy$3.run()Ljava/lang/Object;+8
> v  ~StubRoutines::call_stub
> J  java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;)Ljava/lang/Object;
> j  javax.security.auth.Policy.getPolicyNoCheck()Ljavax/security/auth/Policy;+51
> j  javax.security.auth.Policy.getPolicy()Ljavax/security/auth/Policy;+21
> j  javax.security.auth.SubjectDomainCombiner$5.run()Ljava/lang/Object;+0
> v  ~StubRoutines::call_stub
> j  java.security.AccessController.doPrivileged(Ljava/security/PrivilegedAction;)Ljava/lang/Object;+0
> j  javax.security.auth.SubjectDomainCombiner.compatPolicy()Z+7
> j  javax.security.auth.SubjectDomainCombiner.<clinit>()V+10
> v  ~StubRoutines::call_stub
> j  javax.security.auth.Subject$2.run()Ljava/lang/Object;+28
> v  ~StubRoutines::call_stub
> j  java.security.AccessController.doPrivileged(Ljava/security/PrivilegedAction;)Ljava/lang/Object;+0
> j  javax.security.auth.Subject.createContext(Ljavax/security/auth/Subject;Ljava/security/AccessControlContext;)Ljava/security/AccessControlContext;+9
> j  javax.security.auth.Subject.doAs(Ljavax/security/auth/Subject;Ljava/security/PrivilegedExceptionAction;)Ljava/lang/Object;+39
> j  org.apache.hadoop.ipc.Server$Handler.run()V+168
> v  ~StubRoutines::call_stub
> ---------------  P R O C E S S  ---------------
> Java Threads: ( => current thread )
>   0x00007ff2642f1000 JavaThread "process reaper" daemon [_thread_in_native, id=7220,
stack(0x00007ff263bfc000,0x00007ff263cfd000)]
>   0x000000004069b000 JavaThread "PacketResponder 1 for Block blk_-2874635287821588874_1601382"
daemon [_thread_in_native, id=5238, stack(0x00007ff260bcc000,0x00007ff260ccd000)]
>   0x00007ff264534800 JavaThread "org.apache.hadoop.hdfs.server.datanode.DataXceiver@47fe9d9f"
daemon [_thread_in_native, id=5237, stack(0x00007ff2630f1000,0x00007ff2631f2000)]
>   0x00007ff264580000 JavaThread "org.apache.hadoop.hdfs.server.datanode.DataXceiver@1af438fd"
daemon [_thread_in_native, id=15176, stack(0x00007ff2632f3000,0x00007ff2633f4000)]
>   0x00007ff264394800 JavaThread "org.apache.hadoop.hdfs.server.datanode.DataBlockScanner@524c71d2"
daemon [_thread_blocked, id=1779, stack(0x00007ff263cfd000,0x00007ff263dfe000)]
>   0x00000000402b3000 JavaThread "org.apache.hadoop.hdfs.server.datanode.DataXceiverServer@45490eb5"
daemon [_thread_in_native, id=1772, stack(0x00007ff263dfe000,0x00007ff263eff000)]
>   0x00007ff26443f800 JavaThread "DataNode: [/home/stu/hadoop/tmp/dfs/data,/mnt/drive2/hadoop-storage]"
daemon [_thread_blocked, id=1771, stack(0x00007ff263eff000,0x00007ff264000000)]
>   0x00007ff2646d7000 JavaThread "IPC Client (47) connection to ubuntu-namenode/192.168.195.82:54310
from stu" daemon [_thread_blocked, id=1770, stack(0x00007ff26809b000,0x00007ff26819c000)]
>   0x00007ff2646d5000 JavaThread "IPC Server handler 14 on 50020" daemon [_thread_blocked,
id=1769, stack(0x00007ff26819c000,0x00007ff26829d000)]
>   0x00007ff2646d3000 JavaThread "IPC Server handler 13 on 50020" daemon [_thread_blocked,
id=1768, stack(0x00007ff26829d000,0x00007ff26839e000)]
>   0x00007ff2646d1000 JavaThread "IPC Server handler 12 on 50020" daemon [_thread_blocked,
id=1767, stack(0x00007ff26839e000,0x00007ff26849f000)]
>   0x00007ff2644c0800 JavaThread "IPC Server handler 11 on 50020" daemon [_thread_blocked,
id=1766, stack(0x00007ff26849f000,0x00007ff2685a0000)]
>   0x00007ff2644be800 JavaThread "IPC Server handler 10 on 50020" daemon [_thread_blocked,
id=1765, stack(0x00007ff2685a0000,0x00007ff2686a1000)]
>   0x00007ff2644bc800 JavaThread "IPC Server handler 9 on 50020" daemon [_thread_blocked,
id=1764, stack(0x00007ff2686a1000,0x00007ff2687a2000)]
>   0x00007ff2644ba800 JavaThread "IPC Server handler 8 on 50020" daemon [_thread_blocked,
id=1763, stack(0x00007ff2687a2000,0x00007ff2688a3000)]
>   0x00007ff2642e0800 JavaThread "IPC Server handler 7 on 50020" daemon [_thread_blocked,
id=1762, stack(0x00007ff2688a3000,0x00007ff2689a4000)]
>   0x00007ff2642de800 JavaThread "IPC Server handler 6 on 50020" daemon [_thread_blocked,
id=1761, stack(0x00007ff2689a4000,0x00007ff268aa5000)]
>   0x00007ff2642dc800 JavaThread "IPC Server handler 5 on 50020" daemon [_thread_blocked,
id=1760, stack(0x00007ff268aa5000,0x00007ff268ba6000)]
>   0x00007ff2647d3800 JavaThread "IPC Server handler 4 on 50020" daemon [_thread_blocked,
id=1759, stack(0x00007ff268ba6000,0x00007ff268ca7000)]
>   0x00007ff264396800 JavaThread "IPC Server handler 3 on 50020" daemon [_thread_blocked,
id=1758, stack(0x00007ff268ca7000,0x00007ff268da8000)]
>   0x00007ff264395800 JavaThread "IPC Server handler 2 on 50020" daemon [_thread_blocked,
id=1757, stack(0x00007ff268da8000,0x00007ff268ea9000)]
>   0x00007ff2643fe800 JavaThread "IPC Server handler 1 on 50020" daemon [_thread_blocked,
id=1756, stack(0x00007ff268ea9000,0x00007ff268faa000)]
> =>0x00007ff264330000 JavaThread "IPC Server handler 0 on 50020" daemon [_thread_in_vm,
id=1755, stack(0x00007ff268faa000,0x00007ff2690ab000)]
>   0x00007ff2645c3800 JavaThread "IPC Server listener on 50020" daemon [_thread_in_native,
id=1754, stack(0x00007ff2690ab000,0x00007ff2691ac000)]
>   0x00007ff264657800 JavaThread "IPC Server Responder" daemon [_thread_in_native, id=1753,
stack(0x00007ff2691ac000,0x00007ff2692ad000)]
>   0x00007ff264578800 JavaThread "Timer-0" daemon [_thread_blocked, id=1752, stack(0x00007ff269be2000,0x00007ff269ce3000)]
>   0x0000000040662000 JavaThread "29876954@qtp0-1 - Acceptor0 SelectChannelConnector@0.0.0.0:50075"
[_thread_in_native, id=1751, stack(0x00007ff269fee000,0x00007ff26a0ef000)]
>   0x0000000040208000 JavaThread "1908393212@qtp0-0" [_thread_blocked, id=1750, stack(0x00007ff269eec000,0x00007ff269fed000)]
>   0x00000000401e5000 JavaThread "refreshUsed-/mnt/drive2/hadoop-storage" daemon [_thread_blocked,
id=1741, stack(0x00007ff269ae1000,0x00007ff269be2000)]
>   0x0000000040752800 JavaThread "refreshUsed-/home/stu/hadoop-storage/dfs/data" daemon
[_thread_blocked, id=1729, stack(0x00007ff269ce3000,0x00007ff269de4000)]
>   0x00007ff264228000 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=1699,
stack(0x00007ff26a1f6000,0x00007ff26a2f7000)]
>   0x00007ff264070000 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=1697,
stack(0x00007ff26a93c000,0x00007ff26aa3d000)]
>   0x00007ff26406d800 JavaThread "CompilerThread1" daemon [_thread_blocked, id=1696, stack(0x00007ff26aa3d000,0x00007ff26ab3e000)]
>   0x00007ff26406a800 JavaThread "CompilerThread0" daemon [_thread_blocked, id=1695, stack(0x00007ff26ab3e000,0x00007ff26ac3f000)]
>   0x00007ff264068800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=1694,
stack(0x00007ff26ac3f000,0x00007ff26ad40000)]
>   0x00007ff264048800 JavaThread "Finalizer" daemon [_thread_blocked, id=1693, stack(0x00007ff26ad7f000,0x00007ff26ae80000)]
>   0x00007ff264046800 JavaThread "Reference Handler" daemon [_thread_blocked, id=1692,
stack(0x00007ff26ae80000,0x00007ff26af81000)]
>   0x00000000401ad800 JavaThread "main" [_thread_blocked, id=1688, stack(0x00007ff2f20f6000,0x00007ff2f21f7000)]
> Other Threads:
>   0x00007ff264042000 VMThread [stack: 0x00007ff26af81000,0x00007ff26b082000] [id=1691]
>   0x00007ff264237000 WatcherThread [stack: 0x00007ff26a0f5000,0x00007ff26a1f6000] [id=1700]
> VM state:not at safepoint (normal execution)
> VM Mutex/Monitor currently owned by a thread: None
> Heap
>  PSYoungGen      total 48128K, used 42440K [0x00007ff2c47b0000, 0x00007ff2eb800000, 0x00007ff2ee250000)
>   eden space 47808K, 88% used [0x00007ff2c47b0000,0x00007ff2c70d2138,0x00007ff2c7660000)
>   from space 320K, 100% used [0x00007ff2eb7b0000,0x00007ff2eb800000,0x00007ff2eb800000)
>   to   space 512K, 0% used [0x00007ff2eb700000,0x00007ff2eb700000,0x00007ff2eb780000)
>  PSOldGen        total 29056K, used 16888K [0x00007ff271250000, 0x00007ff272eb0000, 0x00007ff2c47b0000)
>   object space 29056K, 58% used [0x00007ff271250000,0x00007ff2722ce2f8,0x00007ff272eb0000)
>  PSPermGen       total 21504K, used 16618K [0x00007ff26be50000, 0x00007ff26d350000, 0x00007ff271250000)
>   object space 21504K, 77% used [0x00007ff26be50000,0x00007ff26ce8aa88,0x00007ff26d350000)
> Dynamic libraries:
> 40000000-40009000 r-xp 00000000 08:01 3933705                            /usr/lib/jvm/java-6-sun-1.6.0.20/jre/bin/java
(deleted)
> 40108000-4010a000 rwxp 00008000 08:01 3933705                            /usr/lib/jvm/java-6-sun-1.6.0.20/jre/bin/java
(deleted)
> 401a3000-40de1000 rwxp 00000000 00:00 0                                  [heap]
> 7ff260bcc000-7ff260bcf000 ---p 00000000 00:00 0 
> 7ff260bcf000-7ff260ccd000 rwxp 00000000 00:00 0 
> 7ff2612d3000-7ff2612d6000 ---p 00000000 00:00 0 
> 7ff2612d6000-7ff2613d4000 rwxp 00000000 00:00 0 
> 7ff2613d4000-7ff2613d7000 ---p 00000000 00:00 0 
> 7ff2613d7000-7ff2614d5000 rwxp 00000000 00:00 0 
> 7ff2614d5000-7ff2614d8000 ---p 00000000 00:00 0 
> 7ff2614d8000-7ff2615d6000 rwxp 00000000 00:00 0 
> 7ff2615d6000-7ff2615d9000 ---p 00000000 00:00 0 
> 7ff2615d9000-7ff2616d7000 rwxp 00000000 00:00 0 
> 7ff2616d7000-7ff2616da000 ---p 00000000 00:00 0 
> 7ff2616da000-7ff2617d8000 rwxp 00000000 00:00 0 
> 7ff2617d8000-7ff2617db000 ---p 00000000 00:00 0 
> 7ff2617db000-7ff2618d9000 rwxp 00000000 00:00 0 
> 7ff2618d9000-7ff2618dc000 ---p 00000000 00:00 0 
> 7ff2618dc000-7ff2619da000 rwxp 00000000 00:00 0 
> 7ff2619da000-7ff2619dd000 ---p 00000000 00:00 0 
> 7ff2619dd000-7ff261adb000 rwxp 00000000 00:00 0 
> 7ff261adb000-7ff261ade000 ---p 00000000 00:00 0 
> 7ff261ade000-7ff261bdc000 rwxp 00000000 00:00 0 
> 7ff261bdc000-7ff261bdf000 ---p 00000000 00:00 0 
> 7ff261bdf000-7ff261cdd000 rwxp 00000000 00:00 0 
> 7ff261cdd000-7ff261ce0000 ---p 00000000 00:00 0 
> 7ff261ce0000-7ff261dde000 rwxp 00000000 00:00 0 
> 7ff261dde000-7ff261de1000 ---p 00000000 00:00 0 
> 7ff261de1000-7ff261edf000 rwxp 00000000 00:00 0 
> 7ff261edf000-7ff261ee2000 ---p 00000000 00:00 0 
> 7ff261ee2000-7ff261fe0000 rwxp 00000000 00:00 0 
> 7ff261fe0000-7ff261fe3000 ---p 00000000 00:00 0 
> 7ff261fe3000-7ff2620e1000 rwxp 00000000 00:00 0 
> 7ff2620e1000-7ff2620e4000 ---p 00000000 00:00 0 
> 7ff2620e4000-7ff2621e2000 rwxp 00000000 00:00 0 
> 7ff2621e2000-7ff2621e5000 ---p 00000000 00:00 0 
> 7ff2621e5000-7ff2622e3000 rwxp 00000000 00:00 0 
> 7ff2622e3000-7ff2622e6000 ---p 00000000 00:00 0 
> 7ff2622e6000-7ff2623e4000 rwxp 00000000 00:00 0 
> 7ff2623e4000-7ff2623e7000 ---p 00000000 00:00 0 
> 7ff2623e7000-7ff2624e5000 rwxp 00000000 00:00 0 
> 7ff2624e5000-7ff2624e8000 ---p 00000000 00:00 0 
> 7ff2624e8000-7ff2625e6000 rwxp 00000000 00:00 0 
> 7ff2625e6000-7ff2625e9000 ---p 00000000 00:00 0 
> 7ff2625e9000-7ff2626e7000 rwxp 00000000 00:00 0 
> 7ff2626e7000-7ff2626ea000 ---p 00000000 00:00 0 
> 7ff2626ea000-7ff2627e8000 rwxp 00000000 00:00 0 
> 7ff2627e8000-7ff2627eb000 ---p 00000000 00:00 0 
> 7ff2627eb000-7ff2628e9000 rwxp 00000000 00:00 0 
> 7ff2628e9000-7ff2628ec000 ---p 00000000 00:00 0 
> 7ff2628ec000-7ff2629ea000 rwxp 00000000 00:00 0 
> 7ff2629ea000-7ff2629ed000 ---p 00000000 00:00 0 
> 7ff2629ed000-7ff262aeb000 rwxp 00000000 00:00 0 
> 7ff262aeb000-7ff262aee000 ---p 00000000 00:00 0 
> 7ff262aee000-7ff262bec000 rwxp 00000000 00:00 0 
> 7ff262bec000-7ff262bef000 ---p 00000000 00:00 0 
> 7ff262bef000-7ff262ced000 rwxp 00000000 00:00 0 
> 7ff262ced000-7ff262cf0000 ---p 00000000 00:00 0 
> 7ff262cf0000-7ff262dee000 rwxp 00000000 00:00 0 
> 7ff262dee000-7ff262df1000 ---p 00000000 00:00 0 
> 7ff262df1000-7ff262eef000 rwxp 00000000 00:00 0 
> 7ff262eef000-7ff262ef2000 ---p 00000000 00:00 0 
> 7ff262ef2000-7ff262ff0000 rwxp 00000000 00:00 0 
> 7ff262ff0000-7ff262ff3000 ---p 00000000 00:00 0 
> 7ff262ff3000-7ff2630f1000 rwxp 00000000 00:00 0 
> 7ff2630f1000-7ff2630f4000 ---p 00000000 00:00 0 
> 7ff2630f4000-7ff2631f2000 rwxp 00000000 00:00 0 
> 7ff2631f2000-7ff2631f5000 ---p 00000000 00:00 0 
> 7ff2631f5000-7ff2632f3000 rwxp 00000000 00:00 0 
> 7ff2632f3000-7ff2632f6000 ---p 00000000 00:00 0 
> 7ff2632f6000-7ff2633f4000 rwxp 00000000 00:00 0 
> 7ff2633f4000-7ff2633f7000 ---p 00000000 00:00 0 
> 7ff2633f7000-7ff2634f5000 rwxp 00000000 00:00 0 
> 7ff2634f5000-7ff2634f8000 ---p 00000000 00:00 0 
> 7ff2634f8000-7ff2635f6000 rwxp 00000000 00:00 0 
> 7ff2635f6000-7ff2635f9000 ---p 00000000 00:00 0 
> 7ff2635f9000-7ff2636f7000 rwxp 00000000 00:00 0 
> 7ff2637f8000-7ff2637fb000 ---p 00000000 00:00 0 
> 7ff2637fb000-7ff2638f9000 rwxp 00000000 00:00 0 
> 7ff2638f9000-7ff2638fc000 ---p 00000000 00:00 0 
> 7ff2638fc000-7ff2639fa000 rwxp 00000000 00:00 0 
> 7ff2639fa000-7ff2639fd000 ---p 00000000 00:00 0 
> 7ff2639fd000-7ff263afb000 rwxp 00000000 00:00 0 
> 7ff263afb000-7ff263afe000 ---p 00000000 00:00 0 
> 7ff263afe000-7ff263bfc000 rwxp 00000000 00:00 0 
> 7ff263bfc000-7ff263bff000 ---p 00000000 00:00 0 
> 7ff263bff000-7ff263cfd000 rwxp 00000000 00:00 0 
> 7ff263cfd000-7ff263d00000 ---p 00000000 00:00 0 
> 7ff263d00000-7ff263dfe000 rwxp 00000000 00:00 0 
> 7ff263dfe000-7ff263e01000 ---p 00000000 00:00 0 
> 7ff263e01000-7ff263eff000 rwxp 00000000 00:00 0 
> 7ff263eff000-7ff263f02000 ---p 00000000 00:00 0 
> 7ff263f02000-7ff264000000 rwxp 00000000 00:00 0 
> 7ff264000000-7ff265890000 rwxp 00000000 00:00 0 
> 7ff265890000-7ff268000000 ---p 00000000 00:00 0 
> 7ff26809b000-7ff26809e000 ---p 00000000 00:00 0 
> 7ff26809e000-7ff26819c000 rwxp 00000000 00:00 0 
> 7ff26819c000-7ff26819f000 ---p 00000000 00:00 0 
> 7ff26819f000-7ff26829d000 rwxp 00000000 00:00 0 
> 7ff26829d000-7ff2682a0000 ---p 00000000 00:00 0 
> 7ff2682a0000-7ff26839e000 rwxp 00000000 00:00 0 
> 7ff26839e000-7ff2683a1000 ---p 00000000 00:00 0 
> 7ff2683a1000-7ff26849f000 rwxp 00000000 00:00 0 
> 7ff26849f000-7ff2684a2000 ---p 00000000 00:00 0 
> 7ff2684a2000-7ff2685a0000 rwxp 00000000 00:00 0 
> 7ff2685a0000-7ff2685a3000 ---p 00000000 00:00 0 
> 7ff2685a3000-7ff2686a1000 rwxp 00000000 00:00 0 
> 7ff2686a1000-7ff2686a4000 ---p 00000000 00:00 0 
> 7ff2686a4000-7ff2687a2000 rwxp 00000000 00:00 0 
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> 7ff2687a5000-7ff2688a3000 rwxp 00000000 00:00 0 
> 7ff2688a3000-7ff2688a6000 ---p 00000000 00:00 0 
> 7ff2688a6000-7ff2689a4000 rwxp 00000000 00:00 0 
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> 7ff268aa5000-7ff268aa8000 ---p 00000000 00:00 0 
> 7ff268aa8000-7ff268ba6000 rwxp 00000000 00:00 0 
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> 7ff268ba9000-7ff268ca7000 rwxp 00000000 00:00 0 
> 7ff268ca7000-7ff268caa000 ---p 00000000 00:00 0 
> 7ff268caa000-7ff268da8000 rwxp 00000000 00:00 0 
> 7ff268da8000-7ff268dab000 ---p 00000000 00:00 0 
> 7ff268dab000-7ff268ea9000 rwxp 00000000 00:00 0 
> 7ff268ea9000-7ff268eac000 ---p 00000000 00:00 0 
> 7ff268eac000-7ff268faa000 rwxp 00000000 00:00 0 
> 7ff268faa000-7ff268fad000 ---p 00000000 00:00 0 
> 7ff268fad000-7ff2690ab000 rwxp 00000000 00:00 0 
> 7ff2690ab000-7ff2690ae000 ---p 00000000 00:00 0 
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> 7ff2691af000-7ff2692ad000 rwxp 00000000 00:00 0 
> 7ff2692ad000-7ff2692af000 r-xp 00000000 08:01 3207                       /lib/libnss_mdns4.so.2
> 7ff2692af000-7ff2694ae000 ---p 00002000 08:01 3207                       /lib/libnss_mdns4.so.2
> 7ff2694ae000-7ff2694af000 r-xp 00001000 08:01 3207                       /lib/libnss_mdns4.so.2
> 7ff2694af000-7ff2694b0000 rwxp 00002000 08:01 3207                       /lib/libnss_mdns4.so.2
> 7ff2694b0000-7ff2694c6000 r-xp 00000000 08:01 6443                       /lib/libresolv-2.11.1.so
(deleted)
> 7ff2694c6000-7ff2696c5000 ---p 00016000 08:01 6443                       /lib/libresolv-2.11.1.so
(deleted)
> 7ff2696c5000-7ff2696c6000 r-xp 00015000 08:01 6443                       /lib/libresolv-2.11.1.so
(deleted)
> 7ff2696c6000-7ff2696c7000 rwxp 00016000 08:01 6443                       /lib/libresolv-2.11.1.so
(deleted)
> 7ff2696c7000-7ff2696c9000 rwxp 00000000 00:00 0 
> 7ff2696c9000-7ff2696ce000 r-xp 00000000 08:01 3453                       /lib/libnss_dns-2.11.1.so
(deleted)
> 7ff2696ce000-7ff2698cd000 ---p 00005000 08:01 3453                       /lib/libnss_dns-2.11.1.so
(deleted)
> 7ff2698cd000-7ff2698ce000 r-xp 00004000 08:01 3453                       /lib/libnss_dns-2.11.1.so
(deleted)
> 7ff2698ce000-7ff2698cf000 rwxp 00005000 08:01 3453                       /lib/libnss_dns-2.11.1.so
(deleted)
> 7ff2698cf000-7ff2698d1000 r-xp 00000000 08:01 3211                       /lib/libnss_mdns4_minimal.so.2
> 7ff2698d1000-7ff269ad0000 ---p 00002000 08:01 3211                       /lib/libnss_mdns4_minimal.so.2
> 7ff269ad0000-7ff269ad1000 r-xp 00001000 08:01 3211                       /lib/libnss_mdns4_minimal.so.2
> 7ff269ad1000-7ff269ad2000 rwxp 00002000 08:01 3211                       /lib/libnss_mdns4_minimal.so.2
> 7ff269ae1000-7ff269ae4000 ---p 00000000 00:00 0 
> 7ff269ae4000-7ff269be2000 rwxp 00000000 00:00 0 
> 7ff269be2000-7ff269be5000 ---p 00000000 00:00 0 
> 7ff269be5000-7ff269ce3000 rwxp 00000000 00:00 0 
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> 7ff269ce6000-7ff269de4000 rwxp 00000000 00:00 0 
> 7ff269de4000-7ff269deb000 r-xp 00000000 08:01 3933875                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnio.so
(deleted)
> 7ff269deb000-7ff269eea000 ---p 00007000 08:01 3933875                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnio.so
(deleted)
> 7ff269eea000-7ff269eec000 rwxp 00006000 08:01 3933875                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnio.so
(deleted)
> 7ff269eec000-7ff269eef000 ---p 00000000 00:00 0 
> 7ff269eef000-7ff269fed000 rwxp 00000000 00:00 0 
> 7ff269fed000-7ff269fee000 r-xp 00000000 00:00 0 
> 7ff269fee000-7ff269ff1000 ---p 00000000 00:00 0 
> 7ff269ff1000-7ff26a0ef000 rwxp 00000000 00:00 0 
> 7ff26a0ef000-7ff26a0f5000 r-xs 00092000 08:01 3938501                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/jsse.jar
(deleted)
> 7ff26a0f5000-7ff26a0f6000 ---p 00000000 00:00 0 
> 7ff26a0f6000-7ff26a1f6000 rwxp 00000000 00:00 0 
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> 7ff26a1f9000-7ff26a2f7000 rwxp 00000000 00:00 0 
> 7ff26a2f7000-7ff26a304000 r-xs 000d3000 08:01 9702423                    /home/stu/hbase-0.20.6/lib/zookeeper-3.2.2.jar
> 7ff26a304000-7ff26a320000 r-xs 001d4000 08:01 9702385                    /home/stu/hbase-0.20.6/hbase-0.20.6-test.jar
> 7ff26a320000-7ff26a338000 r-xs 00169000 08:01 9701059                    /home/stu/hbase-0.20.6/hbase-0.20.6.jar
> 7ff26a338000-7ff26a33b000 r-xs 0001e000 08:01 265397                     /home/stu/hadoop-0.20.2/lib/jsp-2.1/jsp-api-2.1.jar
> 7ff26a33b000-7ff26a34c000 r-xs 000ea000 08:01 265396                     /home/stu/hadoop-0.20.2/lib/jsp-2.1/jsp-2.1.jar
> 7ff26a34c000-7ff26a34d000 r-xs 00003000 08:01 265417                     /home/stu/hadoop-0.20.2/lib/xmlenc-0.52.jar
> 7ff26a34d000-7ff26a367000 r-xs 00127000 08:01 265402                     /home/stu/hadoop-0.20.2/lib/mockito-all-1.8.0.jar
> 7ff26a367000-7ff26a36a000 r-xs 0001b000 08:01 265398                     /home/stu/hadoop-0.20.2/lib/junit-3.8.1.jar
> 7ff26a36a000-7ff26a36d000 r-xs 00025000 08:01 265395                     /home/stu/hadoop-0.20.2/lib/jetty-util-6.1.14.jar
> 7ff26a36d000-7ff26a374000 r-xs 00078000 08:01 265394                     /home/stu/hadoop-0.20.2/lib/jetty-6.1.14.jar
> 7ff26a374000-7ff26a379000 r-xs 0004a000 08:01 265393                     /home/stu/hadoop-0.20.2/lib/jets3t-0.6.1.jar
> 7ff26a379000-7ff26a37b000 r-xs 00011000 08:01 265383                     /home/stu/hadoop-0.20.2/lib/jasper-runtime-5.5.12.jar
> 7ff26a37b000-7ff26a380000 r-xs 0005e000 08:01 265382                     /home/stu/hadoop-0.20.2/lib/jasper-compiler-5.5.12.jar
> 7ff26a380000-7ff26a389000 r-xs 000a4000 08:01 265381                     /home/stu/hadoop-0.20.2/lib/hsqldb-1.8.0.10.jar
> 7ff26a389000-7ff26a3ac000 r-xs 00344000 08:01 265379                     /home/stu/hadoop-0.20.2/lib/core-3.1.1.jar
> 7ff26a3ac000-7ff26a3d0000 r-xs 0026d000 08:01 265363                     /home/stu/hadoop-0.20.2/hadoop-0.20.2-core.jar
> 7ff26a3d0000-7ff26a42f000 r-xs 00ba5000 08:01 3938424                    /usr/lib/jvm/java-6-sun-1.6.0.20/lib/tools.jar
(deleted)
> 7ff26a42f000-7ff26a435000 r-xp 00000000 08:01 3933918                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libmanagement.so
(deleted)
> 7ff26a435000-7ff26a534000 ---p 00006000 08:01 3933918                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libmanagement.so
(deleted)
> 7ff26a534000-7ff26a536000 rwxp 00005000 08:01 3933918                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libmanagement.so
(deleted)
> 7ff26a536000-7ff26a825000 rwxp 00000000 00:00 0 
> 7ff26a825000-7ff26a838000 r-xp 00000000 08:01 3933871                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnet.so
(deleted)
> 7ff26a838000-7ff26a939000 ---p 00013000 08:01 3933871                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnet.so
(deleted)
> 7ff26a939000-7ff26a93c000 rwxp 00014000 08:01 3933871                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnet.so
(deleted)
> 7ff26a93c000-7ff26a93f000 ---p 00000000 00:00 0 
> 7ff26a93f000-7ff26aa3d000 rwxp 00000000 00:00 0 
> 7ff26aa3d000-7ff26aa40000 ---p 00000000 00:00 0 
> 7ff26aa40000-7ff26ab3e000 rwxp 00000000 00:00 0 
> 7ff26ab3e000-7ff26ab41000 ---p 00000000 00:00 0 
> 7ff26ab41000-7ff26ac3f000 rwxp 00000000 00:00 0 
> 7ff26ac3f000-7ff26ac42000 ---p 00000000 00:00 0 
> 7ff26ac42000-7ff26ad40000 rwxp 00000000 00:00 0 
> 7ff26ad40000-7ff26ad7f000 r-xp 00000000 08:01 9699819                    /usr/lib/locale/en_US.utf8/LC_CTYPE
> 7ff26ad7f000-7ff26ad82000 ---p 00000000 00:00 0 
> 7ff26ad82000-7ff26ae80000 rwxp 00000000 00:00 0 
> 7ff26ae80000-7ff26ae83000 ---p 00000000 00:00 0 
> 7ff26ae83000-7ff26af81000 rwxp 00000000 00:00 0 
> 7ff26af81000-7ff26af82000 ---p 00000000 00:00 0 
> 7ff26af82000-7ff26b3b8000 rwxp 00000000 00:00 0 
> 7ff26b3b8000-7ff26b54e000 r-xs 02fd0000 08:01 3933864                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/rt.jar
(deleted)
> 7ff26b54e000-7ff26b576000 rwxp 00000000 00:00 0 
> 7ff26b576000-7ff26b577000 ---p 00000000 00:00 0 
> 7ff26b577000-7ff26b677000 rwxp 00000000 00:00 0 
> 7ff26b677000-7ff26b678000 ---p 00000000 00:00 0 
> 7ff26b678000-7ff26b783000 rwxp 00000000 00:00 0 
> 7ff26b783000-7ff26b789000 ---p 00000000 00:00 0 
> 7ff26b789000-7ff26b7a2000 rwxp 00000000 00:00 0 
> 7ff26b7a2000-7ff26b7b1000 rwxp 00000000 00:00 0 
> 7ff26b7b1000-7ff26b7b7000 ---p 00000000 00:00 0 
> 7ff26b7b7000-7ff26ba3d000 rwxp 00000000 00:00 0 
> 7ff26ba3d000-7ff26ba48000 rwxp 00000000 00:00 0 
> 7ff26ba48000-7ff26ba4e000 ---p 00000000 00:00 0 
> 7ff26ba4e000-7ff26ba67000 rwxp 00000000 00:00 0 
> 7ff26ba67000-7ff26ba76000 rwxp 00000000 00:00 0 
> 7ff26ba76000-7ff26ba7c000 ---p 00000000 00:00 0 
> 7ff26ba7c000-7ff26bd01000 rwxp 00000000 00:00 0 
> 7ff26bd01000-7ff26be3a000 rwxp 00000000 00:00 0 
> 7ff26be3a000-7ff26be4f000 ---p 00000000 00:00 0 
> 7ff26be4f000-7ff26d350000 rwxp 00000000 00:00 0 
> 7ff26d350000-7ff26df70000 ---p 00000000 00:00 0 
> 7ff26df70000-7ff271250000 rwxp 00000000 00:00 0 
> 7ff271250000-7ff272eb0000 rwxp 00000000 00:00 0 
> 7ff272eb0000-7ff273ba0000 ---p 00000000 00:00 0 
> 7ff273ba0000-7ff2c47b0000 rwxp 00000000 00:00 0 
> 7ff2c47b0000-7ff2eb800000 rwxp 00000000 00:00 0 
> 7ff2eb800000-7ff2ee250000 ---p 00000000 00:00 0 
> 7ff2ee250000-7ff2ee252000 r-xs 00001000 08:01 265416                     /home/stu/hadoop-0.20.2/lib/slf4j-log4j12-1.4.3.jar
> 7ff2ee252000-7ff2ee253000 r-xs 00003000 08:01 265415                     /home/stu/hadoop-0.20.2/lib/slf4j-api-1.4.3.jar
> 7ff2ee253000-7ff2ee256000 r-xs 0001e000 08:01 265414                     /home/stu/hadoop-0.20.2/lib/servlet-api-2.5-6.1.14.jar
> 7ff2ee256000-7ff2ee4e6000 rwxp 00000000 00:00 0 
> 7ff2ee4e6000-7ff2f1256000 rwxp 00000000 00:00 0 
> 7ff2f1256000-7ff2f1264000 r-xp 00000000 08:01 3933885                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libzip.so
(deleted)
> 7ff2f1264000-7ff2f1366000 ---p 0000e000 08:01 3933885                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libzip.so
(deleted)
> 7ff2f1366000-7ff2f1369000 rwxp 00010000 08:01 3933885                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libzip.so
(deleted)
> 7ff2f1369000-7ff2f136a000 rwxp 00000000 00:00 0 
> 7ff2f136a000-7ff2f1376000 r-xp 00000000 08:01 4687                       /lib/libnss_files-2.11.1.so
(deleted)
> 7ff2f1376000-7ff2f1575000 ---p 0000c000 08:01 4687                       /lib/libnss_files-2.11.1.so
(deleted)
> 7ff2f1575000-7ff2f1576000 r-xp 0000b000 08:01 4687                       /lib/libnss_files-2.11.1.so
(deleted)
> 7ff2f1576000-7ff2f1577000 rwxp 0000c000 08:01 4687                       /lib/libnss_files-2.11.1.so
(deleted)
> 7ff2f1577000-7ff2f1581000 r-xp 00000000 08:01 5844                       /lib/libnss_nis-2.11.1.so
(deleted)
> 7ff2f1581000-7ff2f1780000 ---p 0000a000 08:01 5844                       /lib/libnss_nis-2.11.1.so
(deleted)
> 7ff2f1780000-7ff2f1781000 r-xp 00009000 08:01 5844                       /lib/libnss_nis-2.11.1.so
(deleted)
> 7ff2f1781000-7ff2f1782000 rwxp 0000a000 08:01 5844                       /lib/libnss_nis-2.11.1.so
(deleted)
> 7ff2f1782000-7ff2f178a000 r-xp 00000000 08:01 3452                       /lib/libnss_compat-2.11.1.so.dpkg-new
(deleted)
> 7ff2f178a000-7ff2f1989000 ---p 00008000 08:01 3452                       /lib/libnss_compat-2.11.1.so.dpkg-new
(deleted)
> 7ff2f1989000-7ff2f198a000 r-xp 00007000 08:01 3452                       /lib/libnss_compat-2.11.1.so.dpkg-new
(deleted)
> 7ff2f198a000-7ff2f198b000 rwxp 00008000 08:01 3452                       /lib/libnss_compat-2.11.1.so.dpkg-new
(deleted)
> 7ff2f198b000-7ff2f1992000 r-xp 00000000 08:01 3933886                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/native_threads/libhpi.so
(deleted)
> 7ff2f1992000-7ff2f1a93000 ---p 00007000 08:01 3933886                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/native_threads/libhpi.so
(deleted)
> 7ff2f1a93000-7ff2f1a95000 rwxp 00008000 08:01 3933886                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/native_threads/libhpi.so
(deleted)
> 7ff2f1a95000-7ff2f1a96000 rwxp 00000000 00:00 0 
> 7ff2f1a96000-7ff2f1aad000 r-xp 00000000 08:01 3451                       /lib/libnsl-2.11.1.so
(deleted)
> 7ff2f1aad000-7ff2f1cac000 ---p 00017000 08:01 3451                       /lib/libnsl-2.11.1.so
(deleted)
> 7ff2f1cac000-7ff2f1cad000 r-xp 00016000 08:01 3451                       /lib/libnsl-2.11.1.so
(deleted)
> 7ff2f1cad000-7ff2f1cae000 rwxp 00017000 08:01 3451                       /lib/libnsl-2.11.1.so
(deleted)
> 7ff2f1cae000-7ff2f1cb0000 rwxp 00000000 00:00 0 
> 7ff2f1cb0000-7ff2f1cd9000 r-xp 00000000 08:01 3933896                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libjava.so
(deleted)
> 7ff2f1cd9000-7ff2f1dd8000 ---p 00029000 08:01 3933896                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libjava.so
(deleted)
> 7ff2f1dd8000-7ff2f1ddf000 rwxp 00028000 08:01 3933896                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libjava.so
(deleted)
> 7ff2f1ddf000-7ff2f1dec000 r-xp 00000000 08:01 3933880                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libverify.so
(deleted)
> 7ff2f1dec000-7ff2f1eeb000 ---p 0000d000 08:01 3933880                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libverify.so
(deleted)
> 7ff2f1eeb000-7ff2f1eee000 rwxp 0000c000 08:01 3933880                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libverify.so
(deleted)
> 7ff2f1eee000-7ff2f1ef5000 r-xp 00000000 08:01 6444                       /lib/librt-2.11.1.so
(deleted)
> 7ff2f1ef5000-7ff2f20f4000 ---p 00007000 08:01 6444                       /lib/librt-2.11.1.so
(deleted)
> 7ff2f20f4000-7ff2f20f5000 r-xp 00006000 08:01 6444                       /lib/librt-2.11.1.so
(deleted)
> 7ff2f20f5000-7ff2f20f6000 rwxp 00007000 08:01 6444                       /lib/librt-2.11.1.so
(deleted)
> 7ff2f20f6000-7ff2f20f9000 ---p 00000000 00:00 0 
> 7ff2f20f9000-7ff2f21f7000 rwxp 00000000 00:00 0 
> 7ff2f21f7000-7ff2f2279000 r-xp 00000000 08:01 3449                       /lib/libm-2.11.1.so
(deleted)
> 7ff2f2279000-7ff2f2478000 ---p 00082000 08:01 3449                       /lib/libm-2.11.1.so
(deleted)
> 7ff2f2478000-7ff2f2479000 r-xp 00081000 08:01 3449                       /lib/libm-2.11.1.so
(deleted)
> 7ff2f2479000-7ff2f247a000 rwxp 00082000 08:01 3449                       /lib/libm-2.11.1.so
(deleted)
> 7ff2f247a000-7ff2f2c2f000 r-xp 00000000 08:01 3933904                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server/libjvm.so
(deleted)
> 7ff2f2c2f000-7ff2f2d2e000 ---p 007b5000 08:01 3933904                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server/libjvm.so
(deleted)
> 7ff2f2d2e000-7ff2f2eb9000 rwxp 007b4000 08:01 3933904                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server/libjvm.so
(deleted)
> 7ff2f2eb9000-7ff2f2ef2000 rwxp 00000000 00:00 0 
> 7ff2f2ef2000-7ff2f306c000 r-xp 00000000 08:01 1141                       /lib/libc-2.11.1.so
(deleted)
> 7ff2f306c000-7ff2f326b000 ---p 0017a000 08:01 1141                       /lib/libc-2.11.1.so
(deleted)
> 7ff2f326b000-7ff2f326f000 r-xp 00179000 08:01 1141                       /lib/libc-2.11.1.so
(deleted)
> 7ff2f326f000-7ff2f3270000 rwxp 0017d000 08:01 1141                       /lib/libc-2.11.1.so
(deleted)
> 7ff2f3270000-7ff2f3275000 rwxp 00000000 00:00 0 
> 7ff2f3275000-7ff2f3277000 r-xp 00000000 08:01 3448                       /lib/libdl-2.11.1.so
(deleted)
> 7ff2f3277000-7ff2f3477000 ---p 00002000 08:01 3448                       /lib/libdl-2.11.1.so
(deleted)
> 7ff2f3477000-7ff2f3478000 r-xp 00002000 08:01 3448                       /lib/libdl-2.11.1.so
(deleted)
> 7ff2f3478000-7ff2f3479000 rwxp 00003000 08:01 3448                       /lib/libdl-2.11.1.so
(deleted)
> 7ff2f3479000-7ff2f3491000 r-xp 00000000 08:01 6362                       /lib/libpthread-2.11.1.so
(deleted)
> 7ff2f3491000-7ff2f3690000 ---p 00018000 08:01 6362                       /lib/libpthread-2.11.1.so
(deleted)
> 7ff2f3690000-7ff2f3691000 r-xp 00017000 08:01 6362                       /lib/libpthread-2.11.1.so
(deleted)
> 7ff2f3691000-7ff2f3692000 rwxp 00018000 08:01 6362                       /lib/libpthread-2.11.1.so
(deleted)
> 7ff2f3692000-7ff2f3696000 rwxp 00000000 00:00 0 
> 7ff2f3696000-7ff2f36b6000 r-xp 00000000 08:01 851                        /lib/ld-2.11.1.so
(deleted)
> 7ff2f36b6000-7ff2f36b8000 r-xs 0000e000 08:01 265413                     /home/stu/hadoop-0.20.2/lib/oro-2.0.8.jar
> 7ff2f36b8000-7ff2f36bf000 r-xs 00059000 08:01 265401                     /home/stu/hadoop-0.20.2/lib/log4j-1.2.15.jar
> 7ff2f36bf000-7ff2f36c4000 r-xs 00028000 08:01 265378                     /home/stu/hadoop-0.20.2/lib/commons-net-1.4.1.jar
> 7ff2f36c4000-7ff2f36c6000 r-xs 00005000 08:01 265377                     /home/stu/hadoop-0.20.2/lib/commons-logging-api-1.0.4.jar
> 7ff2f36c6000-7ff2f36c8000 r-xs 00008000 08:01 265376                     /home/stu/hadoop-0.20.2/lib/commons-logging-1.0.4.jar
> 7ff2f36c8000-7ff2f36cd000 r-xs 00040000 08:01 265375                     /home/stu/hadoop-0.20.2/lib/commons-httpclient-3.0.1.jar
> 7ff2f36cd000-7ff2f36d0000 r-xs 00019000 08:01 265374                     /home/stu/hadoop-0.20.2/lib/commons-el-1.0.jar
> 7ff2f36d0000-7ff2f36d7000 r-xs 00000000 08:01 4196746                    /usr/lib/gconv/gconv-modules.cache
(deleted)
> 7ff2f36d7000-7ff2f36e2000 rwxp 00000000 00:00 0 
> 7ff2f36e2000-7ff2f3797000 rwxp 00000000 00:00 0 
> 7ff2f3797000-7ff2f379a000 rwxp 00000000 00:00 0 
> 7ff2f379a000-7ff2f37a1000 r-xp 00000000 08:01 3933865                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/jli/libjli.so
(deleted)
> 7ff2f37a1000-7ff2f38a2000 ---p 00007000 08:01 3933865                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/jli/libjli.so
(deleted)
> 7ff2f38a2000-7ff2f38a4000 rwxp 00008000 08:01 3933865                    /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/jli/libjli.so
(deleted)
> 7ff2f38a4000-7ff2f38a5000 rwxp 00000000 00:00 0 
> 7ff2f38a5000-7ff2f38a6000 r-xs 00002000 08:01 265399                     /home/stu/hadoop-0.20.2/lib/kfs-0.2.2.jar
> 7ff2f38a6000-7ff2f38a8000 r-xs 0000a000 08:01 265373                     /home/stu/hadoop-0.20.2/lib/commons-codec-1.3.jar
> 7ff2f38a8000-7ff2f38aa000 r-xs 00009000 08:01 265372                     /home/stu/hadoop-0.20.2/lib/commons-cli-1.2.jar
> 7ff2f38aa000-7ff2f38b2000 rwxs 00000000 08:01 1124                       /tmp/hsperfdata_stu/1662
> 7ff2f38b2000-7ff2f38b3000 rwxp 00000000 00:00 0 
> 7ff2f38b3000-7ff2f38b4000 r-xp 00000000 00:00 0 
> 7ff2f38b4000-7ff2f38b6000 rwxp 00000000 00:00 0 
> 7ff2f38b6000-7ff2f38b7000 r-xp 00020000 08:01 851                        /lib/ld-2.11.1.so
(deleted)
> 7ff2f38b7000-7ff2f38b8000 rwxp 00021000 08:01 851                        /lib/ld-2.11.1.so
(deleted)
> 7ff2f38b8000-7ff2f38b9000 rwxp 00000000 00:00 0 
> 7fffba251000-7fffba267000 rwxp 00000000 00:00 0                          [stack]
> 7fffba282000-7fffba283000 r-xp 00000000 00:00 0                          [vdso]
> ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
> VM Arguments:
> jvm_args: -Xmx2000m -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote -Dhadoop.log.dir=/home/stu/hadoop/bin/../logs
-Dhadoop.log.file=hadoop-stu-datanode-ubuntu-hadoop-3.log -Dhadoop.home.dir=/home/stu/hadoop/bin/..
-Dhadoop.id.str=stu -Dhadoop.root.logger=INFO,DRFA -Djava.library.path=/home/stu/hadoop/bin/../lib/native/Linux-amd64-64
-Dhadoop.policy.file=hadoop-policy.xml 
> java_command: org.apache.hadoop.hdfs.server.datanode.DataNode
> Launcher Type: SUN_STANDARD
> Environment Variables:
> JAVA_HOME=/usr/lib/jvm/java-6-sun
> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/stu/hadoop/bin
> LD_LIBRARY_PATH=/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server:/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64:/usr/lib/jvm/java-6-sun-1.6.0.20/jre/../lib/amd64
> SHELL=/bin/bash
> DISPLAY=localhost:10.0
> Signal Handlers:
> SIGSEGV: [libjvm.so+0x70ffd0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGBUS: [libjvm.so+0x70ffd0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGFPE: [libjvm.so+0x5d8cf0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGPIPE: [libjvm.so+0x5d8cf0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGXFSZ: [libjvm.so+0x5d8cf0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGILL: [libjvm.so+0x5d8cf0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
> SIGUSR2: [libjvm.so+0x5db510], sa_mask[0]=0x00000000, sa_flags=0x10000004
> SIGHUP: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
> SIGINT: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
> SIGTERM: [libjvm.so+0x5db260], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> SIGQUIT: [libjvm.so+0x5db260], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
> ---------------  S Y S T E M  ---------------
> OS:squeeze/sid
> uname:Linux 2.6.32-25-generic #44-Ubuntu SMP Fri Sep 17 20:05:27 UTC 2010 x86_64
> libc:glibc 2.11.1 NPTL 2.11.1 
> rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 64000, AS infinity
> load average:0.32 0.25 0.20
> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 15 stepping 6, cmov,
cx8, fxsr, mmx, sse, sse2, sse3, ssse3
> Memory: 4k page, physical 4057424k(108876k free), swap 24009100k(24009100k free)
> vm_info: Java HotSpot(TM) 64-Bit Server VM (16.3-b01) for linux-amd64 JRE (1.6.0_20-b02),
built on Apr 12 2010 13:57:11 by "java_re" with gcc 3.2.2 (SuSE Linux)
> time: Wed Jan 19 13:01:35 2011
> elapsed time: 1983565 seconds

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