FAQ
Hello,

We're using CDH3b3 0.20.2 hadoop. In our map reduce jobs we've extended MultipleTextOutputFormat to override checkOutputSpecs() and generateFileNameForKeyValue() returning
relative path based on key. I don't have multiple jobs running with the same output directory. When I rerun it succeeds; a couple of runs later it fails. Here is a log from failed attempts:


attempt 0

java.io.IOException: The temporary job-output directory
hdfs://nn:8000/griffin/prod/_temporary doesn't exist! at
org.apache.hadoop.mapred.FileOutputCommitter.getWorkPath(FileOutputCommitte r.java:
250) at
org.apache.hadoop.mapred.FileOutputFormat.getTaskOutputPath(FileOutputForma t.java:
240) at
org.apache.hadoop.mapred.TextOutputFormat.getRecordWriter(TextOutputFormat. java:
129) at
org.apache.hadoop.mapred.lib.MultipleTextOutputFormat.getBaseRecordWriter(M ultipleTextOutputFormat.java:
47) at org.apache.hadoop.mapred.lib.MultipleOutputFormat
$1.write(MultipleOutputFormat.java:102) at
org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:444) at
com.buysight.griffin.UserHistory$MyReducer.reduce(UserHistory.java:
672) at com.buysight.griffin.UserHistory
$MyReducer.reduce(UserHistory.java:148) at
org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:467)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:415) at
org.apache.hadoop.mapred.Child$4.run(Child.java:217) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:396) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
1063) at org.apache.hadoop.mapred.Child.main(Child.java:211)

attempt 1

org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease
on /griffin/prod/_temporary/_attempt_201106061713_0045_r_000000_1/
s2_conv/20110530/part-00000.bz2 File does not exist. Holder
DFSClient_attempt_201106061713_0045_r_000000_1 does not have any open
files. at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
1488) at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
1479) at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNa mesystem.java:
1395) at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:
588) at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
25) at java.lang.reflect.Method.invoke(Method.java:597) at
org.apache.hadoop.ipc.RPC$Server.call(RPC.java:528) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1319) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1315) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:396) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
1063) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1313) at
org.apache.hadoop.ipc.Client.call(Client.java:1054) at
org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226) at
$Proxy1.addBlock(Unknown Source) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
25) at java.lang.reflect.Method.invoke(Method.java:597) at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocat ionHandler.java:
82) at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHan dler.java:
59) at $Proxy1.addBlock(Unknown Source) at
org.apache.hadoop.hdfs.DFSClient
$DFSOutputStream.locateFollowingBlock(DFSClient.java:3166) at
org.apache.hadoop.hdfs.DFSClient
$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3036) at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access
$1900(DFSClient.java:2288) at org.apache.hadoop.hdfs.DFSClient
$DFSOutputStream$DataStreamer.run(DFSClient.java:2483)

I've tried turning off speculative execution. Still no luck. What gives ?

Thanks,
Madhu

Search Discussions

  • Harsh J at Jun 8, 2011 at 4:51 pm
    Madhu,

    Are you multi-threading in your Reducer code by any chance? MTOF may
    not be thread-safe in the release you're using. Using MultipleOutputs
    is recommended right now, if this is the cause/case.
    On Wed, Jun 8, 2011 at 7:58 PM, Madhu Ramanna wrote:
    Hello,

    We're using CDH3b3 0.20.2 hadoop. In our map reduce jobs we've extended MultipleTextOutputFormat to override checkOutputSpecs() and generateFileNameForKeyValue() returning
    relative path based on key. I don't have multiple jobs running with the same output directory. When I rerun it succeeds; a couple of runs later it fails. Here is a log from failed attempts:


    attempt 0

    java.io.IOException: The temporary job-output directory
    hdfs://nn:8000/griffin/prod/_temporary doesn't exist! at
    org.apache.hadoop.mapred.FileOutputCommitter.getWorkPath(FileOutputCommitte r.java:
    250) at
    org.apache.hadoop.mapred.FileOutputFormat.getTaskOutputPath(FileOutputForma t.java:
    240) at
    org.apache.hadoop.mapred.TextOutputFormat.getRecordWriter(TextOutputFormat. java:
    129) at
    org.apache.hadoop.mapred.lib.MultipleTextOutputFormat.getBaseRecordWriter(M ultipleTextOutputFormat.java:
    47) at org.apache.hadoop.mapred.lib.MultipleOutputFormat
    $1.write(MultipleOutputFormat.java:102) at
    org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:444) at
    com.buysight.griffin.UserHistory$MyReducer.reduce(UserHistory.java:
    672) at com.buysight.griffin.UserHistory
    $MyReducer.reduce(UserHistory.java:148) at
    org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:467)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:415) at
    org.apache.hadoop.mapred.Child$4.run(Child.java:217) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at
    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
    1063) at org.apache.hadoop.mapred.Child.main(Child.java:211)

    attempt 1

    org.apache.hadoop.ipc.RemoteException:
    org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease
    on /griffin/prod/_temporary/_attempt_201106061713_0045_r_000000_1/
    s2_conv/20110530/part-00000.bz2 File does not exist. Holder
    DFSClient_attempt_201106061713_0045_r_000000_1 does not have any open
    files. at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
    1488) at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
    1479) at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNa mesystem.java:
    1395) at
    org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:
    588) at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at
    org.apache.hadoop.ipc.RPC$Server.call(RPC.java:528) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1319) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1315) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at
    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
    1063) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1313) at
    org.apache.hadoop.ipc.Client.call(Client.java:1054) at
    org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226) at
    $Proxy1.addBlock(Unknown Source) at
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
    39) at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at
    org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocat ionHandler.java:
    82) at
    org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHan dler.java:
    59) at $Proxy1.addBlock(Unknown Source) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.locateFollowingBlock(DFSClient.java:3166) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.nextBlockOutputStream(DFSClient.java:3036) at
    org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access
    $1900(DFSClient.java:2288) at org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream$DataStreamer.run(DFSClient.java:2483)

    I've tried turning off speculative execution. Still no luck.  What gives ?

    Thanks,
    Madhu


    --
    Harsh J
  • Harsh J at Jun 8, 2011 at 4:53 pm
    Or not. I misread your error, that shouldn't be it, sorry.
    On Wed, Jun 8, 2011 at 10:21 PM, Harsh J wrote:
    Madhu,

    Are you multi-threading in your Reducer code by any chance? MTOF may
    not be thread-safe in the release you're using. Using MultipleOutputs
    is recommended right now, if this is the cause/case.
    On Wed, Jun 8, 2011 at 7:58 PM, Madhu Ramanna wrote:
    Hello,

    We're using CDH3b3 0.20.2 hadoop. In our map reduce jobs we've extended MultipleTextOutputFormat to override checkOutputSpecs() and generateFileNameForKeyValue() returning
    relative path based on key. I don't have multiple jobs running with the same output directory. When I rerun it succeeds; a couple of runs later it fails. Here is a log from failed attempts:


    attempt 0

    java.io.IOException: The temporary job-output directory
    hdfs://nn:8000/griffin/prod/_temporary doesn't exist! at
    org.apache.hadoop.mapred.FileOutputCommitter.getWorkPath(FileOutputCommitte r.java:
    250) at
    org.apache.hadoop.mapred.FileOutputFormat.getTaskOutputPath(FileOutputForma t.java:
    240) at
    org.apache.hadoop.mapred.TextOutputFormat.getRecordWriter(TextOutputFormat. java:
    129) at
    org.apache.hadoop.mapred.lib.MultipleTextOutputFormat.getBaseRecordWriter(M ultipleTextOutputFormat.java:
    47) at org.apache.hadoop.mapred.lib.MultipleOutputFormat
    $1.write(MultipleOutputFormat.java:102) at
    org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:444) at
    com.buysight.griffin.UserHistory$MyReducer.reduce(UserHistory.java:
    672) at com.buysight.griffin.UserHistory
    $MyReducer.reduce(UserHistory.java:148) at
    org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:467)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:415) at
    org.apache.hadoop.mapred.Child$4.run(Child.java:217) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at
    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
    1063) at org.apache.hadoop.mapred.Child.main(Child.java:211)

    attempt 1

    org.apache.hadoop.ipc.RemoteException:
    org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease
    on /griffin/prod/_temporary/_attempt_201106061713_0045_r_000000_1/
    s2_conv/20110530/part-00000.bz2 File does not exist. Holder
    DFSClient_attempt_201106061713_0045_r_000000_1 does not have any open
    files. at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
    1488) at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem .java:
    1479) at
    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNa mesystem.java:
    1395) at
    org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:
    588) at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at
    org.apache.hadoop.ipc.RPC$Server.call(RPC.java:528) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1319) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1315) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at
    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.j ava:
    1063) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1313) at
    org.apache.hadoop.ipc.Client.call(Client.java:1054) at
    org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226) at
    $Proxy1.addBlock(Unknown Source) at
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
    39) at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at
    org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocat ionHandler.java:
    82) at
    org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHan dler.java:
    59) at $Proxy1.addBlock(Unknown Source) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.locateFollowingBlock(DFSClient.java:3166) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.nextBlockOutputStream(DFSClient.java:3036) at
    org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access
    $1900(DFSClient.java:2288) at org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream$DataStreamer.run(DFSClient.java:2483)

    I've tried turning off speculative execution. Still no luck.  What gives ?

    Thanks,
    Madhu


    --
    Harsh J


    --
    Harsh J
  • Madhu Ramanna at Jun 9, 2011 at 9:53 pm
    Any other suggestions ? Could this be a timeout issue ?

    Thanks,
    Madhu
    On 6/8/11 9:52 AM, "Harsh J" wrote:

    Or not. I misread your error, that shouldn't be it, sorry.
    On Wed, Jun 8, 2011 at 10:21 PM, Harsh J wrote:
    Madhu,

    Are you multi-threading in your Reducer code by any chance? MTOF may
    not be thread-safe in the release you're using. Using MultipleOutputs
    is recommended right now, if this is the cause/case.

    On Wed, Jun 8, 2011 at 7:58 PM, Madhu Ramanna <madhu@buysight.com>
    wrote:
    Hello,

    We're using CDH3b3 0.20.2 hadoop. In our map reduce jobs we've
    extended MultipleTextOutputFormat to override checkOutputSpecs() and
    generateFileNameForKeyValue() returning
    relative path based on key. I don't have multiple jobs running with
    the same output directory. When I rerun it succeeds; a couple of runs
    later it fails. Here is a log from failed attempts:


    attempt 0

    java.io.IOException: The temporary job-output directory
    hdfs://nn:8000/griffin/prod/_temporary doesn't exist! at

    org.apache.hadoop.mapred.FileOutputCommitter.getWorkPath(FileOutputCommi
    tte r.java:
    250) at

    org.apache.hadoop.mapred.FileOutputFormat.getTaskOutputPath(FileOutputFo
    rma t.java:
    240) at

    org.apache.hadoop.mapred.TextOutputFormat.getRecordWriter(TextOutputForm
    at. java:
    129) at

    org.apache.hadoop.mapred.lib.MultipleTextOutputFormat.getBaseRecordWrite
    r(M ultipleTextOutputFormat.java:
    47) at org.apache.hadoop.mapred.lib.MultipleOutputFormat
    $1.write(MultipleOutputFormat.java:102) at
    org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:444) at
    com.buysight.griffin.UserHistory$MyReducer.reduce(UserHistory.java:
    672) at com.buysight.griffin.UserHistory
    $MyReducer.reduce(UserHistory.java:148) at
    org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:467)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:415) at
    org.apache.hadoop.mapred.Child$4.run(Child.java:217) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at

    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformatio
    n.j ava:
    1063) at org.apache.hadoop.mapred.Child.main(Child.java:211)

    attempt 1

    org.apache.hadoop.ipc.RemoteException:
    org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease
    on /griffin/prod/_temporary/_attempt_201106061713_0045_r_000000_1/
    s2_conv/20110530/part-00000.bz2 File does not exist. Holder
    DFSClient_attempt_201106061713_0045_r_000000_1 does not have any open
    files. at

    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesys
    tem .java:
    1488) at

    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesys
    tem .java:
    1479) at

    org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(F
    SNa mesystem.java:
    1395) at
    org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:
    588) at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)
    at

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
    Imp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at
    org.apache.hadoop.ipc.RPC$Server.call(RPC.java:528) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1319) at
    org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1315) at
    java.security.AccessController.doPrivileged(Native Method) at
    javax.security.auth.Subject.doAs(Subject.java:396) at

    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformatio
    n.j ava:
    1063) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1313) at
    org.apache.hadoop.ipc.Client.call(Client.java:1054) at
    org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226) at
    $Proxy1.addBlock(Unknown Source) at
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
    a:
    39) at

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
    Imp l.java:
    25) at java.lang.reflect.Method.invoke(Method.java:597) at

    org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvo
    cat ionHandler.java:
    82) at

    org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocation
    Han dler.java:
    59) at $Proxy1.addBlock(Unknown Source) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.locateFollowingBlock(DFSClient.java:3166) at
    org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream.nextBlockOutputStream(DFSClient.java:3036) at
    org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access
    $1900(DFSClient.java:2288) at org.apache.hadoop.hdfs.DFSClient
    $DFSOutputStream$DataStreamer.run(DFSClient.java:2483)

    I've tried turning off speculative execution. Still no luck. What
    gives ?

    Thanks,
    Madhu


    --
    Harsh J


    --
    Harsh J

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groupcommon-user @
categorieshadoop
postedJun 8, '11 at 2:29p
activeJun 9, '11 at 9:53p
posts4
users2
websitehadoop.apache.org...
irc#hadoop

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Harsh J: 2 posts Madhu Ramanna: 2 posts

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