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自升级到2.x版本之后，有很多属性的名称已经被遗弃了，虽然这些被遗弃的属性名称目前还可以用，但是这里还是建议用新的属性名，主要遗弃的属性名称主要见下面表格：
已经被遗弃属性的名称 新的属性名称
create.empty.dir.if.nonexist mapreduce.jobcontrol.createdir.ifnotexist
dfs.access.time.precision dfs.namenode.accesstime.precision
dfs.backup.address dfs.namenode.backup.address
dfs.backup.http.address dfs.namenode.backup.http-address
dfs.balance.bandwidthPerSec dfs.datanode.balance.bandwidthPerSec
dfs.block.size dfs.blocksize
dfs.data.dir dfs.datanode.data.dir
dfs.datanode.max.xcievers dfs.datanode.max.transfer.threads
dfs.df.interval fs.df.interval
dfs.federation.nameservice.id dfs.nameservice.id
dfs.federation.nameservices dfs.nameservices
dfs.http.address dfs.namenode.http-address
dfs.https.address dfs.namenode.https-address
dfs.https.client.keystore.resource dfs.client.https.keystore.resource
dfs.https.need.client.auth dfs.client.https.need-auth
dfs.max.objects dfs.namenode.max.objects
dfs.max-repl-streams dfs.namenode.replication.max-streams
dfs.name.dir dfs.namenode.name.dir
dfs.name.dir.restore dfs.namenode.name.dir.restore
dfs.name.edits.dir dfs.namenode.edits.dir
dfs.permissions dfs.permissions.enabled
dfs.permissions.supergroup dfs.permissions.superusergroup
dfs.read.prefetch.size dfs.client.read.prefetch.size
dfs.replication.considerLoad dfs.namenode.replication.considerLoad
dfs.replication.interval dfs.namenode.replication.interval
dfs.replication.min dfs.namenode.replication.min
dfs.replication.pending.timeout.sec dfs.namenode.replication.pending.timeout-sec
dfs.safemode.extension dfs.namenode.safemode.extension
dfs.safemode.threshold.pct dfs.namenode.safemode.threshold-pct
dfs.secondary.http.address dfs.namenode.secondary.http-address
dfs.socket.timeout dfs.client.socket-timeout
dfs.umaskmode fs.permissions.umask-mode
dfs.write.packet.size dfs.client-write-packet-size
fs.checkpoint.dir dfs.namenode.checkpoint.dir
fs.checkpoint.edits.dir dfs.namenode.checkpoint.edits.dir
fs.checkpoint.period dfs.namenode.checkpoint.period
fs.default.name fs.defaultFS
hadoop.configured.node.mapping net.topology.configured.node.mapping
hadoop.job.history.location mapreduce.jobtracker.jobhistory.location
hadoop.native.lib io.native.lib.available
hadoop.net.static.resolutions mapreduce.tasktracker.net.static.resolutions
hadoop.pipes.command-file.keep mapreduce.pipes.commandfile.preserve
hadoop.pipes.executable.interpretor mapreduce.pipes.executable.interpretor
hadoop.pipes.executable mapreduce.pipes.executable
hadoop.pipes.java.mapper mapreduce.pipes.isjavamapper
hadoop.pipes.java.recordreader mapreduce.pipes.isjavarecordreader
hadoop.pipes.java.recordwriter mapreduce.pipes.isjavarecordwriter
hadoop.pipes.java.reducer mapreduce.pipes.isjavareducer
hadoop.pipes.partitioner mapreduce.pipes.partitioner
heartbeat.recheck.interval dfs.namenode.heartbeat.recheck-interval
io.bytes.per.checksum dfs.bytes-per-checksum
io.sort.factor mapreduce.task.io.sort.factor
io.sort.mb mapreduce.task.io.sort.mb
io.sort.spill.percent mapreduce.map.sort.spill.percent
jobclient.completion.poll.interval mapreduce.client.completion.pollinterval
jobclient.output.filter mapreduce.client.output.filter
jobclient.progress.monitor.poll.interval mapreduce.client.progressmonitor.pollinterval
job.end.notification.url mapreduce.job.end-notification.url
job.end.retry.attempts mapreduce.job.end-notification.retry.attempts
job.end.retry.interval mapreduce.job.end-notification.retry.interval
job.local.dir mapreduce.job.local.dir
keep.failed.task.files mapreduce.task.files.preserve.failedtasks
keep.task.files.pattern mapreduce.task.files.preserve.filepattern
key.value.separator.in.input.line mapreduce.input.keyvaluelinerecordreader.key.value.separator
local.cache.size mapreduce.tasktracker.cache.local.size
map.input.file mapreduce.map.input.file
map.input.length mapreduce.map.input.length
map.input.start mapreduce.map.input.start
map.output.key.field.separator mapreduce.map.output.key.field.separator
map.output.key.value.fields.spec mapreduce.fieldsel.map.output.key.value.fields.spec
mapred.acls.enabled mapreduce.cluster.acls.enabled
mapred.binary.partitioner.left.offset mapreduce.partition.binarypartitioner.left.offset
mapred.binary.partitioner.right.offset mapreduce.partition.binarypartitioner.right.offset
mapred.cache.archives mapreduce.job.cache.archives
mapred.cache.archives.timestamps mapreduce.job.cache.archives.timestamps
mapred.cache.files mapreduce.job.cache.files
mapred.cache.files.timestamps mapreduce.job.cache.files.timestamps
mapred.cache.localArchives mapreduce.job.cache.local.archives
mapred.cache.localFiles mapreduce.job.cache.local.files
mapred.child.tmp mapreduce.task.tmp.dir
mapred.cluster.average.blacklist.threshold mapreduce.jobtracker.blacklist.average.threshold
mapred.cluster.map.memory.mb mapreduce.cluster.mapmemory.mb
mapred.cluster.max.map.memory.mb mapreduce.jobtracker.maxmapmemory.mb
mapred.cluster.max.reduce.memory.mb mapreduce.jobtracker.maxreducememory.mb
mapred.cluster.reduce.memory.mb mapreduce.cluster.reducememory.mb
mapred.committer.job.setup.cleanup.needed mapreduce.job.committer.setup.cleanup.needed
mapred.compress.map.output mapreduce.map.output.compress
mapred.data.field.separator mapreduce.fieldsel.data.field.separator
mapred.debug.out.lines mapreduce.task.debugout.lines
mapred.healthChecker.interval mapreduce.tasktracker.healthchecker.interval
mapred.healthChecker.script.args mapreduce.tasktracker.healthchecker.script.args
mapred.healthChecker.script.path mapreduce.tasktracker.healthchecker.script.path
mapred.healthChecker.script.timeout mapreduce.tasktracker.healthchecker.script.timeout
mapred.heartbeats.in.second mapreduce.jobtracker.heartbeats.in.second
mapred.hosts.exclude mapreduce.jobtracker.hosts.exclude.filename
mapred.hosts mapreduce.jobtracker.hosts.filename
mapred.inmem.merge.threshold mapreduce.reduce.merge.inmem.threshold
mapred.input.dir.formats mapreduce.input.multipleinputs.dir.formats
mapred.input.dir.mappers mapreduce.input.multipleinputs.dir.mappers
mapred.input.dir mapreduce.input.fileinputformat.inputdir
mapred.input.pathFilter.class mapreduce.input.pathFilter.class
mapred.jar mapreduce.job.jar
mapred.job.classpath.archives mapreduce.job.classpath.archives
mapred.job.classpath.files mapreduce.job.classpath.files
mapred.job.id mapreduce.job.id
mapred.jobinit.threads mapreduce.jobtracker.jobinit.threads
mapred.job.map.memory.mb mapreduce.map.memory.mb
mapred.job.name mapreduce.job.name
mapred.job.priority mapreduce.job.priority
mapred.job.queue.name mapreduce.job.queuename
mapred.job.reduce.input.buffer.percent mapreduce.reduce.input.buffer.percent
mapred.job.reduce.markreset.buffer.percent mapreduce.reduce.markreset.buffer.percent
mapred.job.reduce.memory.mb mapreduce.reduce.memory.mb
mapred.job.reduce.total.mem.bytes mapreduce.reduce.memory.totalbytes
mapred.job.reuse.jvm.num.tasks mapreduce.job.jvm.numtasks
mapred.job.shuffle.input.buffer.percent mapreduce.reduce.shuffle.input.buffer.percent
mapred.job.shuffle.merge.percent mapreduce.reduce.shuffle.merge.percent
mapred.job.tracker.handler.count mapreduce.jobtracker.handler.count
mapred.job.tracker.history.completed.location mapreduce.jobtracker.jobhistory.completed.location
mapred.job.tracker.http.address mapreduce.jobtracker.http.address
mapred.jobtracker.instrumentation mapreduce.jobtracker.instrumentation
mapred.jobtracker.job.history.block.size mapreduce.jobtracker.jobhistory.block.size
mapred.job.tracker.jobhistory.lru.cache.size mapreduce.jobtracker.jobhistory.lru.cache.size
mapred.job.tracker mapreduce.jobtracker.address
mapred.jobtracker.maxtasks.per.job mapreduce.jobtracker.maxtasks.perjob
mapred.job.tracker.persist.jobstatus.active mapreduce.jobtracker.persist.jobstatus.active
mapred.job.tracker.persist.jobstatus.dir mapreduce.jobtracker.persist.jobstatus.dir
mapred.job.tracker.persist.jobstatus.hours mapreduce.jobtracker.persist.jobstatus.hours
mapred.jobtracker.restart.recover mapreduce.jobtracker.restart.recover
mapred.job.tracker.retiredjobs.cache.size mapreduce.jobtracker.retiredjobs.cache.size
mapred.job.tracker.retire.jobs mapreduce.jobtracker.retirejobs
mapred.jobtracker.taskalloc.capacitypad mapreduce.jobtracker.taskscheduler.taskalloc.capacitypad
mapred.jobtracker.taskScheduler mapreduce.jobtracker.taskscheduler
mapred.jobtracker. mapreduce.jobtracker.taskscheduler.maxrunningtasks.perjob
taskScheduler.maxRunningTasksPerJob
mapred.join.expr mapreduce.join.expr
mapred.join.keycomparator mapreduce.join.keycomparator
mapred.lazy.output.format mapreduce.output.lazyoutputformat.outputformat
mapred.line.input.format.linespermap mapreduce.input.lineinputformat.linespermap
mapred.linerecordreader.maxlength mapreduce.input.linerecordreader.line.maxlength
mapred.local.dir mapreduce.cluster.local.dir
mapred.local.dir.minspacekill mapreduce.tasktracker.local.dir.minspacekill
mapred.local.dir.minspacestart mapreduce.tasktracker.local.dir.minspacestart
mapred.map.child.env mapreduce.map.env
mapred.map.child.java.opts mapreduce.map.java.opts
mapred.map.child.log.level mapreduce.map.log.level
mapred.map.max.attempts mapreduce.map.maxattempts
mapred.map.output.compression.codec mapreduce.map.output.compress.codec
mapred.mapoutput.key.class mapreduce.map.output.key.class
mapred.mapoutput.value.class mapreduce.map.output.value.class
mapred.mapper.regex.group mapreduce.mapper.regexmapper..group
mapred.mapper.regex mapreduce.mapper.regex
mapred.map.task.debug.script mapreduce.map.debug.script
mapred.map.tasks mapreduce.job.maps
mapred.map.tasks.speculative.execution mapreduce.map.speculative
mapred.max.map.failures.percent mapreduce.map.failures.maxpercent
mapred.max.reduce.failures.percent mapreduce.reduce.failures.maxpercent
mapred.max.split.size mapreduce.input.fileinputformat.split.maxsize
mapred.max.tracker.blacklists mapreduce.jobtracker.tasktracker.maxblacklists
mapred.max.tracker.failures mapreduce.job.maxtaskfailures.per.tracker
mapred.merge.recordsBeforeProgress mapreduce.task.merge.progress.records
mapred.min.split.size mapreduce.input.fileinputformat.split.minsize
mapred.min.split.size.per.node mapreduce.input.fileinputformat.split.minsize.per.node
mapred.min.split.size.per.rack mapreduce.input.fileinputformat.split.minsize.per.rack
mapred.output.compression.codec mapreduce.output.fileoutputformat.compress.codec
mapred.output.compression.type mapreduce.output.fileoutputformat.compress.type
mapred.output.compress mapreduce.output.fileoutputformat.compress
mapred.output.dir mapreduce.output.fileoutputformat.outputdir
mapred.output.key.class mapreduce.job.output.key.class
mapred.output.key.comparator.class mapreduce.job.output.key.comparator.class
mapred.output.value.class mapreduce.job.output.value.class
mapred.output.value.groupfn.class mapreduce.job.output.group.comparator.class
mapred.permissions.supergroup mapreduce.cluster.permissions.supergroup
mapred.pipes.user.inputformat mapreduce.pipes.inputformat
mapred.reduce.child.env mapreduce.reduce.env
mapred.reduce.child.java.opts mapreduce.reduce.java.opts
mapred.reduce.child.log.level mapreduce.reduce.log.level
mapred.reduce.max.attempts mapreduce.reduce.maxattempts
mapred.reduce.parallel.copies mapreduce.reduce.shuffle.parallelcopies
mapred.reduce.slowstart.completed.maps mapreduce.job.reduce.slowstart.completedmaps
mapred.reduce.task.debug.script mapreduce.reduce.debug.script
mapred.reduce.tasks mapreduce.job.reduces
mapred.reduce.tasks.speculative.execution mapreduce.reduce.speculative
mapred.seqbinary.output.key.class mapreduce.output.seqbinaryoutputformat.key.class
mapred.seqbinary.output.value.class mapreduce.output.seqbinaryoutputformat.value.class
mapred.shuffle.connect.timeout mapreduce.reduce.shuffle.connect.timeout
mapred.shuffle.read.timeout mapreduce.reduce.shuffle.read.timeout
mapred.skip.attempts.to.start.skipping mapreduce.task.skip.start.attempts
mapred.skip.map.auto.incr.proc.count mapreduce.map.skip.proc-count.auto-incr
mapred.skip.map.max.skip.records mapreduce.map.skip.maxrecords
mapred.skip.on mapreduce.job.skiprecords
mapred.skip.out.dir mapreduce.job.skip.outdir
mapred.skip.reduce.auto.incr.proc.count mapreduce.reduce.skip.proc-count.auto-incr
mapred.skip.reduce.max.skip.groups mapreduce.reduce.skip.maxgroups
mapred.speculative.execution.slowNodeThreshold mapreduce.job.speculative.slownodethreshold
mapred.speculative.execution.slowTaskThreshold mapreduce.job.speculative.slowtaskthreshold
mapred.speculative.execution.speculativeCap mapreduce.job.speculative.speculativecap
mapred.submit.replication mapreduce.client.submit.file.replication
mapred.system.dir mapreduce.jobtracker.system.dir
mapred.task.cache.levels mapreduce.jobtracker.taskcache.levels
mapred.task.id mapreduce.task.attempt.id
mapred.task.is.map mapreduce.task.ismap
mapred.task.partition mapreduce.task.partition
mapred.task.profile mapreduce.task.profile
mapred.task.profile.maps mapreduce.task.profile.maps
mapred.task.profile.params mapreduce.task.profile.params
mapred.task.profile.reduces mapreduce.task.profile.reduces
mapred.task.timeout mapreduce.task.timeout
mapred.tasktracker.dns.interface mapreduce.tasktracker.dns.interface
mapred.tasktracker.dns.nameserver mapreduce.tasktracker.dns.nameserver
mapred.tasktracker.events.batchsize mapreduce.tasktracker.events.batchsize
mapred.tasktracker.expiry.interval mapreduce.jobtracker.expire.trackers.interval
mapred.task.tracker.http.address mapreduce.tasktracker.http.address
mapred.tasktracker.indexcache.mb mapreduce.tasktracker.indexcache.mb
mapred.tasktracker.instrumentation mapreduce.tasktracker.instrumentation
mapred.tasktracker.map.tasks.maximum mapreduce.tasktracker.map.tasks.maximum
mapred.tasktracker.memory_calculator_plugin mapreduce.tasktracker.resourcecalculatorplugin
mapred.tasktracker.memorycalculatorplugin mapreduce.tasktracker.resourcecalculatorplugin
mapred.tasktracker.reduce.tasks.maximum mapreduce.tasktracker.reduce.tasks.maximum
mapred.task.tracker.report.address mapreduce.tasktracker.report.address
mapred.task.tracker.task-controller mapreduce.tasktracker.taskcontroller
mapred.tasktracker.taskmemorymanager.monitoring-interval mapreduce.tasktracker.taskmemorymanager.monitoringinterval
mapred.tasktracker.tasks.sleeptime-before-sigkill mapreduce.tasktracker.tasks.sleeptimebeforesigkill
mapred.temp.dir mapreduce.cluster.temp.dir
mapred.text.key.comparator.options mapreduce.partition.keycomparator.options
mapred.text.key.partitioner.options mapreduce.partition.keypartitioner.options
mapred.textoutputformat.separator mapreduce.output.textoutputformat.separator
mapred.tip.id mapreduce.task.id
mapreduce.combine.class mapreduce.job.combine.class
mapreduce.inputformat.class mapreduce.job.inputformat.class
mapreduce.job.counters.limit mapreduce.job.counters.max
mapreduce.jobtracker.permissions.supergroup mapreduce.cluster.permissions.supergroup
mapreduce.map.class mapreduce.job.map.class
mapreduce.outputformat.class mapreduce.job.outputformat.class
mapreduce.partitioner.class mapreduce.job.partitioner.class
mapreduce.reduce.class mapreduce.job.reduce.class
mapred.used.genericoptionsparser mapreduce.client.genericoptionsparser.used
mapred.userlog.limit.kb mapreduce.task.userlog.limit.kb
mapred.userlog.retain.hours mapreduce.job.userlog.retain.hours
mapred.working.dir mapreduce.job.working.dir
mapred.work.output.dir mapreduce.task.output.dir
min.num.spills.for.combine mapreduce.map.combine.minspills
reduce.output.key.value.fields.spec mapreduce.fieldsel.reduce.output.key.value.fields.spec
security.job.submission.protocol.acl security.job.client.protocol.acl
security.task.umbilical.protocol.acl security.job.task.protocol.acl
sequencefile.filter.class mapreduce.input.sequencefileinputfilter.class
sequencefile.filter.frequency mapreduce.input.sequencefileinputfilter.frequency
sequencefile.filter.regex mapreduce.input.sequencefileinputfilter.regex
session.id dfs.metrics.session-id
slave.host.name dfs.datanode.hostname
slave.host.name mapreduce.tasktracker.host.name
tasktracker.contention.tracking mapreduce.tasktracker.contention.tracking
tasktracker.http.threads mapreduce.tasktracker.http.threads
topology.node.switch.mapping.impl net.topology.node.switch.mapping.impl
topology.script.file.name net.topology.script.file.name
topology.script.number.args net.topology.script.number.args
user.name mapreduce.job.user.name
webinterface.private.actions mapreduce.jobtracker.webinterface.trusted
下面表格列出一些配置属性的相关改变：
Deprecated property name New property name
mapred.create.symlink NONE - symlinking一直都是开的状态
mapreduce.job.cache.symlink.create NONE - symlinking一直都是开的状态