MapR Parameters

The following table lists user-configurable parameters and their defaults. These defaults reflect the values in the default configuration files, plus any overrides shipped out-of-the-box in core-site.xml, mapred-site.xml, or other configuration files. You can override these values by editing or adding them in mapred-site.xml or core-site.xml, using the -D option to the hadoop jar command when submitting a job, or by setting them explicitly in your code.

Parameter

Default

fs.mapr.bailout.on.library.mismatch true
fs.mapr.bind.retries false
fs.mapr.working.dir  
fs.maprfs.impl
fs.ramfs.impl
fs.s3.block.size 33554432
fs.s3.blockSize 33554432
fs.s3.buffer.dir
fs.s3.impl
fs.s3.maxRetries 4
fs.s3.sleepTimeSeconds 10
fs.s3n.block.size 33554432
fs.s3n.blockSize 33554432
fs.s3n.impl
fs.trash.interval 0
hadoop.logfile.count 10
hadoop.logfile.size 10000000
hadoop.native.lib TRUE
hadoop.proxyuser.root.groups root
hadoop.proxyuser.root.hosts
hadoop.rpc.socket.factory.class.default
hadoop.security.authentication simple
hadoop.security.authorization FALSE
hadoop.security.group.mapping
hadoop.security.uid.cache.secs 14400
hadoop.tmp.dir
hadoop.util.hash.type murmur
hadoop.workaround.non.threadsafe.getpwuid FALSE
io.bytes.per.checksum 512
io.compression.codecs
io.file.buffer.size 8192
io.mapfile.bloom.error.rate 0.005
io.mapfile.bloom.size 1048576
io.serializations
io.skip.checksum.errors FALSE
io.sort.factor 256
io.sort.mb 380
io.sort.record.percent 0.17
io.sort.spill.percent 0.99
ipc.client.connect.max.retries 10
ipc.client.connection.maxidletime 10000
ipc.client.idlethreshold 4000
ipc.client.kill.max 10
ipc.client.max.connection.setup.timeout 20
ipc.client.tcpnodelay TRUE
ipc.server.listen.queue.size 128
ipc.server.tcpnodelay TRUE
job.end.retry.interval 30000
jobclient.completion.poll.interval 5000
jobclient.output.filter FAILED
jobclient.progress.monitor.poll.interval 1000
keep.failed.task.files FALSE
local.cache.size 1.07E+10
map.sort.class
mapr.centrallog.dir logs
mapr.localoutput.dir output
mapr.localspill.dir spill
mapr.localvolumes.path
mapr.map.keyprefix.ints 1
mapr.task.diagnostics.enabled FALSE
mapreduce.heartbeat.10 300
mapreduce.heartbeat.100 1000
mapreduce.heartbeat.1000 10000
mapreduce.job.complete.cancel.delegation.tokens TRUE
mapreduce.maprfs.use.compression TRUE
mapreduce.reduce.input.limit -1
mapreduce.task.classpath.user.precedence FALSE
maprfs.openfid2.prefetch.bytes 0
tasktracker.http.threads 2
topology.node.switch.mapping.impl