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From Shivani Rao <raoshiv...@gmail.com>
Subject hadoop streaming and job conf settings
Date Wed, 13 Apr 2011 18:09:47 GMT
Hello,

I am facing trouble using hadoop streaming in order to  solve a simple
nearest neighbor problem.

Input data is in the following format
<key>'\t'<value>

key is the imageid for which nearest neighbor will be computed
the value is 100 dimensional  vector of floating point values separated by
space or tab

The mapper reads in the query (the query is a 100 dimensional vector) and
each line of the input and outputs a <key2, value2>
where key2 is a floating point value indicating the distance, and value2 is
the imageid

The number of reducers is set to 1. And the reducer is set to be the
identity reducer.

I tried to use the following command

bin/hadoop jar ./mapred/contrib/streaming/hadoop-0.21.0-streaming.jar
-Dmapreduce.job.output.key.class=org.apache.hadoop.io.DoubleWritable -files
/home/shivani/research/toolkit/mathouttuts/nearestneighbor/code/IdentityMapper.R#file1
-input datain/comparedata -output dataout5 -mapper file1 -reducer
org.apache.hadoop.mapred.lib.IdentityReducer -verbose

This is the output stream is as below. The failure is in the mapper itself,
more specifically the TEXTOUTPUTREADER. I am not sure how to fix this. The
logs are attached below:


11/04/13 13:22:15 INFO security.Groups: Group mapping
impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping;
cacheTimeout=300000
11/04/13 13:22:15 WARN conf.Configuration: mapred.used.genericoptionsparser
is deprecated. Instead, use mapreduce.client.genericoptionsparser.used
STREAM: addTaskEnvironment=
STREAM: shippedCanonFiles_=[]
STREAM: shipped: false /usr/local/hadoop/file1
STREAM: cmd=file1
STREAM: cmd=null
STREAM: shipped: false
/usr/local/hadoop/org.apache.hadoop.mapred.lib.IdentityReducer
STREAM: cmd=org.apache.hadoop.mapred.lib.IdentityReducer
11/04/13 13:22:15 WARN conf.Configuration: mapred.task.id is deprecated.
Instead, use mapreduce.task.attempt.id
STREAM: Found runtime classes in:
/usr/local/hadoop-hadoop/hadoop-unjar7358684340334149267/
packageJobJar: [/usr/local/hadoop-hadoop/hadoop-unjar7358684340334149267/]
[] /tmp/streamjob2923554781371902680.jar tmpDir=null
JarBuilder.addNamedStream META-INF/MANIFEST.MF
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritable.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesRecordOutput$1.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritableOutput$1.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesRecordOutput.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesOutput.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesOutput$1.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesInput$1.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritableOutput.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesRecordInput$TypedBytesIndex.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritableInput$2.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritableInput.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesRecordInput.class
JarBuilder.addNamedStream org/apache/hadoop/typedbytes/Type.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesWritableInput$1.class
JarBuilder.addNamedStream
org/apache/hadoop/typedbytes/TypedBytesRecordInput$1.class
JarBuilder.addNamedStream org/apache/hadoop/typedbytes/TypedBytesInput.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/StreamUtil$TaskId.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeMapRed$1.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/StreamJob.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/StreamUtil.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/Environment.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/RawBytesOutputReader.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/TypedBytesInputWriter.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/TextInputWriter.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/io/InputWriter.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/TextOutputReader.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/IdentifierResolver.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/RawBytesInputWriter.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/io/TypedBytesOutputReader.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/io/OutputReader.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeMapRed.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PathFinder.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/LoadTypedBytes.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/StreamXmlRecordReader.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/UTF8ByteArrayUtils.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/JarBuilder.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/StreamUtil$StreamConsumer.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/PipeMapRed$MRErrorThread.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/StreamKeyValUtil.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeCombiner.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeReducer.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/StreamInputFormat.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeMapRunner.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/PipeMapRed$MROutputThread.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/HadoopStreaming.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/DumpTypedBytes.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/AutoInputFormat.class
JarBuilder.addNamedStream org/apache/hadoop/streaming/PipeMapper.class
JarBuilder.addNamedStream
org/apache/hadoop/streaming/StreamBaseRecordReader.class
STREAM: ==== JobConf properties:
STREAM: dfs.block.access.key.update.interval=600
STREAM: dfs.block.access.token.enable=false
STREAM: dfs.block.access.token.lifetime=600
STREAM: dfs.blockreport.initialDelay=0
STREAM: dfs.blockreport.intervalMsec=21600000
STREAM: dfs.blocksize=67108864
STREAM: dfs.bytes-per-checksum=512
STREAM: dfs.client-write-packet-size=65536
STREAM: dfs.client.block.write.retries=3
STREAM: dfs.client.https.keystore.resource=ssl-client.xml
STREAM: dfs.client.https.need-auth=false
STREAM: dfs.datanode.address=0.0.0.0:50010
STREAM: dfs.datanode.balance.bandwidthPerSec=1048576
STREAM: dfs.datanode.data.dir=file://${hadoop.tmp.dir}/dfs/data
STREAM: dfs.datanode.data.dir.perm=755
STREAM: dfs.datanode.directoryscan.interval=21600
STREAM: dfs.datanode.directoryscan.threads=1
STREAM: dfs.datanode.dns.interface=default
STREAM: dfs.datanode.dns.nameserver=default
STREAM: dfs.datanode.du.reserved=0
STREAM: dfs.datanode.failed.volumes.tolerated=0
STREAM: dfs.datanode.handler.count=3
STREAM: dfs.datanode.http.address=0.0.0.0:50075
STREAM: dfs.datanode.https.address=0.0.0.0:50475
STREAM: dfs.datanode.ipc.address=0.0.0.0:50020
STREAM: dfs.default.chunk.view.size=32768
STREAM: dfs.heartbeat.interval=3
STREAM: dfs.https.enable=false
STREAM: dfs.https.server.keystore.resource=ssl-server.xml
STREAM: dfs.namenode.accesstime.precision=3600000
STREAM: dfs.namenode.backup.address=0.0.0.0:50100
STREAM: dfs.namenode.backup.http-address=0.0.0.0:50105
STREAM:
dfs.namenode.checkpoint.dir=file://${hadoop.tmp.dir}/dfs/namesecondary
STREAM: dfs.namenode.checkpoint.edits.dir=${dfs.namenode.checkpoint.dir}
STREAM: dfs.namenode.checkpoint.period=3600
STREAM: dfs.namenode.checkpoint.size=67108864
STREAM: dfs.namenode.decommission.interval=30
STREAM: dfs.namenode.decommission.nodes.per.interval=5
STREAM: dfs.namenode.delegation.key.update-interval=86400
STREAM: dfs.namenode.delegation.token.max-lifetime=604800
STREAM: dfs.namenode.delegation.token.renew-interval=86400
STREAM: dfs.namenode.edits.dir=${dfs.namenode.name.dir}
STREAM: dfs.namenode.handler.count=10
STREAM: dfs.namenode.http-address=0.0.0.0:50070
STREAM: dfs.namenode.https-address=0.0.0.0:50470
STREAM: dfs.namenode.logging.level=info
STREAM: dfs.namenode.max.objects=0
STREAM: dfs.namenode.name.dir=file://${hadoop.tmp.dir}/dfs/name
STREAM: dfs.namenode.replication.considerLoad=true
STREAM: dfs.namenode.replication.interval=3
STREAM: dfs.namenode.replication.min=1
STREAM: dfs.namenode.safemode.extension=30000
STREAM: dfs.namenode.safemode.threshold-pct=0.999f
STREAM: dfs.namenode.secondary.http-address=0.0.0.0:50090
STREAM: dfs.permissions.enabled=true
STREAM: dfs.permissions.superusergroup=supergroup
STREAM: dfs.replication=1
STREAM: dfs.replication.max=512
STREAM: dfs.stream-buffer-size=4096
STREAM: dfs.web.ugi=webuser,webgroup
STREAM: file.blocksize=67108864
STREAM: file.bytes-per-checksum=512
STREAM: file.client-write-packet-size=65536
STREAM: file.replication=1
STREAM: file.stream-buffer-size=4096
STREAM: fs.AbstractFileSystem.file.impl=org.apache.hadoop.fs.local.LocalFs
STREAM: fs.AbstractFileSystem.hdfs.impl=org.apache.hadoop.fs.Hdfs
STREAM: fs.automatic.close=true
STREAM: fs.checkpoint.dir=${hadoop.tmp.dir}/dfs/namesecondary
STREAM: fs.checkpoint.edits.dir=${fs.checkpoint.dir}
STREAM: fs.checkpoint.period=3600
STREAM: fs.checkpoint.size=67108864
STREAM: fs.defaultFS=hdfs://localhost:54310
STREAM: fs.df.interval=60000
STREAM: fs.file.impl=org.apache.hadoop.fs.LocalFileSystem
STREAM: fs.ftp.impl=org.apache.hadoop.fs.ftp.FTPFileSystem
STREAM: fs.har.impl=org.apache.hadoop.fs.HarFileSystem
STREAM: fs.har.impl.disable.cache=true
STREAM: fs.hdfs.impl=org.apache.hadoop.hdfs.DistributedFileSystem
STREAM: fs.hftp.impl=org.apache.hadoop.hdfs.HftpFileSystem
STREAM: fs.hsftp.impl=org.apache.hadoop.hdfs.HsftpFileSystem
STREAM: fs.kfs.impl=org.apache.hadoop.fs.kfs.KosmosFileSystem
STREAM: fs.ramfs.impl=org.apache.hadoop.fs.InMemoryFileSystem
STREAM: fs.s3.block.size=67108864
STREAM: fs.s3.buffer.dir=${hadoop.tmp.dir}/s3
STREAM: fs.s3.impl=org.apache.hadoop.fs.s3.S3FileSystem
STREAM: fs.s3.maxRetries=4
STREAM: fs.s3.sleepTimeSeconds=10
STREAM: fs.s3n.block.size=67108864
STREAM: fs.s3n.impl=org.apache.hadoop.fs.s3native.NativeS3FileSystem
STREAM: fs.trash.interval=0
STREAM: ftp.blocksize=67108864
STREAM: ftp.bytes-per-checksum=512
STREAM: ftp.client-write-packet-size=65536
STREAM: ftp.replication=3
STREAM: ftp.stream-buffer-size=4096
STREAM: hadoop.common.configuration.version=0.21.0
STREAM: hadoop.hdfs.configuration.version=1
STREAM: hadoop.logfile.count=10
STREAM: hadoop.logfile.size=10000000
STREAM:
hadoop.rpc.socket.factory.class.default=org.apache.hadoop.net.StandardSocketFactory
STREAM: hadoop.security.authentication=simple
STREAM: hadoop.security.authorization=false
STREAM: hadoop.tmp.dir=/usr/local/hadoop-${user.name}
STREAM: hadoop.util.hash.type=murmur
STREAM: io.bytes.per.checksum=512
STREAM:
io.compression.codecs=org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec
STREAM: io.file.buffer.size=4096
STREAM: io.map.index.skip=0
STREAM: io.mapfile.bloom.error.rate=0.005
STREAM: io.mapfile.bloom.size=1048576
STREAM: io.native.lib.available=true
STREAM: io.seqfile.compress.blocksize=1000000
STREAM: io.seqfile.lazydecompress=true
STREAM: io.seqfile.local.dir=${hadoop.tmp.dir}/io/local
STREAM: io.seqfile.sorter.recordlimit=1000000
STREAM:
io.serializations=org.apache.hadoop.io.serializer.WritableSerialization,org.apache.hadoop.io.serializer.avro.AvroSpecificSerialization,org.apache.hadoop.io.serializer.avro.AvroReflectSerialization
STREAM: io.skip.checksum.errors=false
STREAM: ipc.client.connect.max.retries=10
STREAM: ipc.client.connection.maxidletime=10000
STREAM: ipc.client.idlethreshold=4000
STREAM: ipc.client.kill.max=10
STREAM: ipc.client.tcpnodelay=false
STREAM: ipc.server.listen.queue.size=128
STREAM: ipc.server.tcpnodelay=false
STREAM: kfs.blocksize=67108864
STREAM: kfs.bytes-per-checksum=512
STREAM: kfs.client-write-packet-size=65536
STREAM: kfs.replication=3
STREAM: kfs.stream-buffer-size=4096
STREAM: map.sort.class=org.apache.hadoop.util.QuickSort
STREAM: mapred.child.java.opts=-Xmx200m
STREAM: mapred.input.format.class=org.apache.hadoop.mapred.TextInputFormat
STREAM: mapred.map.runner.class=org.apache.hadoop.streaming.PipeMapRunner
STREAM: mapred.mapper.class=org.apache.hadoop.streaming.PipeMapper
STREAM: mapred.output.format.class=org.apache.hadoop.mapred.TextOutputFormat
STREAM: mapred.reducer.class=org.apache.hadoop.mapred.lib.IdentityReducer
STREAM: mapreduce.client.completion.pollinterval=5000
STREAM: mapreduce.client.genericoptionsparser.used=true
STREAM: mapreduce.client.output.filter=FAILED
STREAM: mapreduce.client.progressmonitor.pollinterval=1000
STREAM: mapreduce.client.submit.file.replication=10
STREAM: mapreduce.cluster.local.dir=${hadoop.tmp.dir}/mapred/local
STREAM: mapreduce.cluster.temp.dir=${hadoop.tmp.dir}/mapred/temp
STREAM:
mapreduce.input.fileinputformat.inputdir=hdfs://localhost:54310/user/hadoop/datain/comparedata
STREAM: mapreduce.input.fileinputformat.split.minsize=0
STREAM: mapreduce.job.cache.symlink.create=yes
STREAM: mapreduce.job.committer.setup.cleanup.needed=true
STREAM: mapreduce.job.complete.cancel.delegation.tokens=true
STREAM: mapreduce.job.end-notification.retry.attempts=0
STREAM: mapreduce.job.end-notification.retry.interval=30000
STREAM: mapreduce.job.jar=/tmp/streamjob2923554781371902680.jar
STREAM: mapreduce.job.jvm.numtasks=1
STREAM: mapreduce.job.maps=2
STREAM: mapreduce.job.maxtaskfailures.per.tracker=4
STREAM: mapreduce.job.output.key.class=org.apache.hadoop.io.Text
STREAM: mapreduce.job.output.value.class=org.apache.hadoop.io.Text
STREAM: mapreduce.job.queuename=default
STREAM: mapreduce.job.reduce.slowstart.completedmaps=0.05
STREAM: mapreduce.job.reduces=1
STREAM: mapreduce.job.speculative.slownodethreshold=1.0
STREAM: mapreduce.job.speculative.slowtaskthreshold=1.0
STREAM: mapreduce.job.speculative.speculativecap=0.1
STREAM: mapreduce.job.split.metainfo.maxsize=10000000
STREAM: mapreduce.job.userlog.retain.hours=24
STREAM: mapreduce.job.working.dir=hdfs://localhost:54310/user/hadoop
STREAM: mapreduce.jobtracker.address=localhost:54311
STREAM: mapreduce.jobtracker.expire.trackers.interval=600000
STREAM: mapreduce.jobtracker.handler.count=10
STREAM: mapreduce.jobtracker.heartbeats.in.second=100
STREAM: mapreduce.jobtracker.http.address=0.0.0.0:50030
STREAM:
mapreduce.jobtracker.instrumentation=org.apache.hadoop.mapred.JobTrackerMetricsInst
STREAM: mapreduce.jobtracker.jobhistory.block.size=3145728
STREAM: mapreduce.jobtracker.jobhistory.lru.cache.size=5
STREAM: mapreduce.jobtracker.maxtasks.perjob=-1
STREAM: mapreduce.jobtracker.persist.jobstatus.active=true
STREAM: mapreduce.jobtracker.persist.jobstatus.dir=/jobtracker/jobsInfo
STREAM: mapreduce.jobtracker.persist.jobstatus.hours=1
STREAM: mapreduce.jobtracker.restart.recover=false
STREAM: mapreduce.jobtracker.retiredjobs.cache.size=1000
STREAM:
mapreduce.jobtracker.staging.root.dir=${hadoop.tmp.dir}/mapred/staging
STREAM: mapreduce.jobtracker.system.dir=${hadoop.tmp.dir}/mapred/system
STREAM: mapreduce.jobtracker.taskcache.levels=2
STREAM:
mapreduce.jobtracker.taskscheduler=org.apache.hadoop.mapred.JobQueueTaskScheduler
STREAM: mapreduce.jobtracker.tasktracker.maxblacklists=4
STREAM: mapreduce.map.log.level=INFO
STREAM: mapreduce.map.maxattempts=4
STREAM: mapreduce.map.output.compress=false
STREAM:
mapreduce.map.output.compress.codec=org.apache.hadoop.io.compress.DefaultCodec
STREAM: mapreduce.map.output.key.class=org.apache.hadoop.io.Text
STREAM: mapreduce.map.output.value.class=org.apache.hadoop.io.Text
STREAM: mapreduce.map.skip.maxrecords=0
STREAM: mapreduce.map.skip.proc.count.autoincr=true
STREAM: mapreduce.map.sort.spill.percent=0.80
STREAM: mapreduce.map.speculative=true
STREAM: mapreduce.output.fileoutputformat.compress=false
STREAM:
mapreduce.output.fileoutputformat.compression.codec=org.apache.hadoop.io.compress.DefaultCodec
STREAM: mapreduce.output.fileoutputformat.compression.type=RECORD
STREAM:
mapreduce.output.fileoutputformat.outputdir=hdfs://localhost:54310/user/hadoop/dataout5
STREAM: mapreduce.reduce.input.buffer.percent=0.0
STREAM: mapreduce.reduce.log.level=INFO
STREAM: mapreduce.reduce.markreset.buffer.percent=0.0
STREAM: mapreduce.reduce.maxattempts=4
STREAM: mapreduce.reduce.merge.inmem.threshold=1000
STREAM: mapreduce.reduce.shuffle.connect.timeout=180000
STREAM: mapreduce.reduce.shuffle.input.buffer.percent=0.70
STREAM: mapreduce.reduce.shuffle.merge.percent=0.66
STREAM: mapreduce.reduce.shuffle.parallelcopies=5
STREAM: mapreduce.reduce.shuffle.read.timeout=180000
STREAM: mapreduce.reduce.skip.maxgroups=0
STREAM: mapreduce.reduce.skip.proc.count.autoincr=true
STREAM: mapreduce.reduce.speculative=true
STREAM: mapreduce.task.files.preserve.failedtasks=false
STREAM: mapreduce.task.io.sort.factor=10
STREAM: mapreduce.task.io.sort.mb=100
STREAM: mapreduce.task.merge.progress.records=10000
STREAM: mapreduce.task.profile=false
STREAM: mapreduce.task.profile.maps=0-2
STREAM: mapreduce.task.profile.reduces=0-2
STREAM: mapreduce.task.skip.start.attempts=2
STREAM: mapreduce.task.timeout=600000
STREAM: mapreduce.task.tmp.dir=./tmp
STREAM: mapreduce.task.userlog.limit.kb=0
STREAM: mapreduce.tasktracker.cache.local.size=10737418240
STREAM: mapreduce.tasktracker.dns.interface=default
STREAM: mapreduce.tasktracker.dns.nameserver=default
STREAM: mapreduce.tasktracker.healthchecker.interval=60000
STREAM: mapreduce.tasktracker.healthchecker.script.timeout=600000
STREAM: mapreduce.tasktracker.http.address=0.0.0.0:50060
STREAM: mapreduce.tasktracker.http.threads=40
STREAM: mapreduce.tasktracker.indexcache.mb=10
STREAM:
mapreduce.tasktracker.instrumentation=org.apache.hadoop.mapred.TaskTrackerMetricsInst
STREAM: mapreduce.tasktracker.local.dir.minspacekill=0
STREAM: mapreduce.tasktracker.local.dir.minspacestart=0
STREAM: mapreduce.tasktracker.map.tasks.maximum=2
STREAM: mapreduce.tasktracker.outofband.heartbeat=false
STREAM: mapreduce.tasktracker.reduce.tasks.maximum=2
STREAM: mapreduce.tasktracker.report.address=127.0.0.1:0
STREAM:
mapreduce.tasktracker.taskcontroller=org.apache.hadoop.mapred.DefaultTaskController
STREAM: mapreduce.tasktracker.taskmemorymanager.monitoringinterval=5000
STREAM: mapreduce.tasktracker.tasks.sleeptimebeforesigkill=5000
STREAM:
net.topology.node.switch.mapping.impl=org.apache.hadoop.net.ScriptBasedMapping
STREAM: net.topology.script.number.args=100
STREAM: s3.blocksize=67108864
STREAM: s3.bytes-per-checksum=512
STREAM: s3.client-write-packet-size=65536
STREAM: s3.replication=3
STREAM: s3.stream-buffer-size=4096
STREAM: s3native.blocksize=67108864
STREAM: s3native.bytes-per-checksum=512
STREAM: s3native.client-write-packet-size=65536
STREAM: s3native.replication=3
STREAM: s3native.stream-buffer-size=4096
STREAM: stream.addenvironment=
STREAM:
stream.map.input.writer.class=org.apache.hadoop.streaming.io.TextInputWriter
STREAM:
stream.map.output.reader.class=org.apache.hadoop.streaming.io.TextOutputReader
STREAM: stream.map.streamprocessor=file1
STREAM: stream.numinputspecs=1
STREAM:
stream.reduce.input.writer.class=org.apache.hadoop.streaming.io.TextInputWriter
STREAM:
stream.reduce.output.reader.class=org.apache.hadoop.streaming.io.TextOutputReader
STREAM:
tmpfiles=file:/home/shivani/research/toolkit/mathouttuts/nearestneighbor/code/IdentityMapper.R#file1
STREAM: webinterface.private.actions=false
STREAM: ====
STREAM: submitting to jobconf: localhost:54311
11/04/13 13:22:17 INFO mapred.FileInputFormat: Total input paths to process
: 1
11/04/13 13:22:17 WARN conf.Configuration: mapred.map.tasks is deprecated.
Instead, use mapreduce.job.maps
11/04/13 13:22:17 INFO mapreduce.JobSubmitter: number of splits:2
11/04/13 13:22:17 INFO mapreduce.JobSubmitter: adding the following
namenodes' delegation tokens:null
11/04/13 13:22:17 INFO streaming.StreamJob: getLocalDirs():
[/usr/local/hadoop-hadoop/mapred/local]
11/04/13 13:22:17 INFO streaming.StreamJob: Running job:
job_201104131251_0002
11/04/13 13:22:17 INFO streaming.StreamJob: To kill this job, run:
11/04/13 13:22:17 INFO streaming.StreamJob: /usr/local/hadoop/bin/hadoop
job  -Dmapreduce.jobtracker.address=localhost:54311 -kill
job_201104131251_0002
11/04/13 13:22:17 INFO streaming.StreamJob: Tracking URL:
http://localhost:50030/jobdetails.jsp?jobid=job_201104131251_0002
11/04/13 13:22:18 INFO streaming.StreamJob:  map 0%  reduce 0%
11/04/13 13:23:19 INFO streaming.StreamJob:  map 100%  reduce 100%
11/04/13 13:23:19 INFO streaming.StreamJob: To kill this job, run:
11/04/13 13:23:19 INFO streaming.StreamJob: /usr/local/hadoop/bin/hadoop
job  -Dmapreduce.jobtracker.address=localhost:54311 -kill
job_201104131251_0002
11/04/13 13:23:19 INFO streaming.StreamJob: Tracking URL:
http://localhost:50030/jobdetails.jsp?jobid=job_201104131251_0002
11/04/13 13:23:19 ERROR streaming.StreamJob: Job not Successful!
11/04/13 13:23:19 INFO streaming.StreamJob: killJob...
Streaming Command Failed!

I looked at the output of the mapper and it fails

ava.lang.NullPointerException at
java.lang.String.<init>(String.java:523) at
org.apache.hadoop.streaming.io.TextOutputReader.getLastOutput(TextOutputReader.java:87)
at
org.apache.hadoop.streaming.PipeMapRed.getContext(PipeMapRed.java:616) at
org.apache.hadoop.streaming.PipeMapRed.logFailure(PipeMapRed.java:643) at
org.apache.hadoop.streaming.PipeMapper.map(PipeMapper.java:123) at
org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54) at
org.apache.hadoop.streaming.PipeMapRunner.run(PipeMapRunner.java:36) at
org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:397) at
org.apache.hadoop.mapred.MapTask.run(MapTask.java:330) 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:416) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:742)
at
org.apache.hadoop.mapred.Child.main(Child.java:211)


Regards,
Shivani

-- 
Research Scholar,
School of Electrical and Computer Engineering
Purdue University
West Lafayette IN
web.ics.purdue.edu/~sgrao

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