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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1587) JVM crash under writes: ExceptionMark destructor expects no pending exceptions
Date Mon, 14 Mar 2011 16:48:31 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006507#comment-13006507
] 

Todd Lipcon commented on HDFS-1587:
-----------------------------------

It has "Review ID" 1985110, but it didn't get assigned a bug ID yet that I know of.

> 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 
> 7ff2687a2000-7ff2687a5000 ---p 00000000 00:00 0 
> 7ff2687a5000-7ff2688a3000 rwxp 00000000 00:00 0 
> 7ff2688a3000-7ff2688a6000 ---p 00000000 00:00 0 
> 7ff2688a6000-7ff2689a4000 rwxp 00000000 00:00 0 
> 7ff2689a4000-7ff2689a7000 ---p 00000000 00:00 0 
> 7ff2689a7000-7ff268aa5000 rwxp 00000000 00:00 0 
> 7ff268aa5000-7ff268aa8000 ---p 00000000 00:00 0 
> 7ff268aa8000-7ff268ba6000 rwxp 00000000 00:00 0 
> 7ff268ba6000-7ff268ba9000 ---p 00000000 00:00 0 
> 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 
> 7ff2690ae000-7ff2691ac000 rwxp 00000000 00:00 0 
> 7ff2691ac000-7ff2691af000 ---p 00000000 00:00 0 
> 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 
> 7ff269ce3000-7ff269ce6000 ---p 00000000 00:00 0 
> 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 
> 7ff26a1f6000-7ff26a1f9000 ---p 00000000 00:00 0 
> 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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