Default core Parameters

Property Description
dfs.bytes-per-checksum

Default value: 512

Default source: code

dfs.ha.fencing.ssh.connect-timeout Default value: 30000

Default source: core-default.xml

dfs.namenode.checkpoint.dir Default value:${hadoop.tmp.dir}/dfs/namesecondary

Default source: code

dfs.namenode.checkpoint.edits.dir Default value: ${fs.checkpoint.dir}

Default source: code

dfs.namenode.checkpoint.period Default value: 3600

Default source: code

file.blocksize Default value: 67108864

Default source: core-default.xml

file.bytes-per-checksum Default value: 512

Default source: core-default.xml

file.client-write-packet-size Default value: 65536

Default source: core-default.xml

file.replication Default value: 1

Default source: core-default.xml

file.stream-buffer-size Default value: 4096

Default source: core-default.xml

fs.AbstractFileSystem.file.impl

Default value: org.apache.hadoop.fs.local.LocalFs

Default source: core-default.xml

fs.AbstractFileSystem.ftp.impl

Default value: org.apache.hadoop.fs.ftp.FtpFs

Default source: core-default.xml

fs.AbstractFileSystem.har.impl

Default value: org.apache.hadoop.fs.HarFs

Default source: core-default.xml

fs.AbstractFileSystem.hdfs.impl

Default value: com.mapr.fs.MFS

Default source: code

fs.AbstractFileSystem.maprfs.impl

Default value: com.mapr.fs.MFS

Default source: code

fs.AbstractFileSystem.viewfs.impl

Default value: org.apache.hadoop.fs.viewfs.ViewFs

Default source: core-default.xml

fs.automatic.close

Default value: TRUE

Default source: core-default.xml

fs.checkpoint.size

Default value: 67108864

Default source: code

fs.client.resolve.remote.symlinks

Default value: TRUE

Default source: core-default.xml

fs.defaultFS

Default value: maprfs:///

Default source: code

fs.df.interval

Default value: 60000

Default source: core-default.xml

fs.du.interval

Default value: 600000

Default source: core-default.xml

fs.file.impl

Default value: org.apache.hadoop.fs.LocalFileSystem

Default source: code

fs.ftp.host

Default value: 0.0.0.0

Default source: core-default.xml

fs.ftp.host.port

Default value: 21

Default source: core-default.xml

fs.ftp.impl

Default value: org.apache.hadoop.fs.ftp.FTPFileSystem

Default source: code

fs.har.impl

Default value: org.apache.hadoop.fs.HarFileSystem

Default source: code

fs.har.impl.disable.cache

Default value: TRUE

Default source: core-default.xml

fs.hdfs.impl

Default value: com.mapr.fs.MapRFileSystem

Default source: code

fs.hftp.impl

Default value: org.apache.hadoop.hdfs.HftpFileSystem

Default source: code

fs.hsftp.impl

Default value: org.apache.hadoop.hdfs.HsftpFileSystem

Default source: code

fs.kfs.impl

Default value: org.apache.hadoop.fs.kfs.KosmosFileSystem

Default source: code

fs.mapr.flush.unaligned

Default value: false

Default source: code

fs.mapr.rathreads

Default value: 0

Default source: code

fs.mapr.working.dir

Default value: /user/$USERNAME/

Default source: code

fs.mapr.write.idleflush.timeout

Default value: 3 seconds

Default source: code

fs.maprfs.impl

Default value: com.mapr.fs.MapRFileSystem

Default source: code

fs.permissions.umask-mode

Default value: 22

Default source: core-default.xml

fs.ramfs.impl

Default value: org.apache.hadoop.fs.InMemoryFileSystem

Default source: code

fs.s3.block.size

Default value: 33554432

Default source: code

fs.s3.blockSize

Default value: 33554432

Default source: code

fs.s3.buffer.dir

Default value: ${hadoop.tmp.dir}/s3

Default source: core-default.xml

fs.s3.impl

Default value: org.apache.hadoop.fs.s3native.NativeS3FileSystem

Default source: code

fs.s3.maxRetries

Default value: 4

Default source: core-default.xml

fs.s3.sleepTimeSeconds

Default value: 10

Default source: core-default.xml

fs.s3a.attempts.maximum

Default value: 10

Default source: core-default.xml

fs.s3a.buffer.dir

Default value: ${hadoop.tmp.dir}/s3a

Default source: core-default.xml

fs.s3a.connection.establish.timeout

Default value: 5000

Default source: core-default.xml

fs.s3a.connection.maximum

Default value: 15

Default source: core-default.xml

fs.s3a.connection.ssl.enabled

Default value: TRUE

Default source: core-default.xml

fs.s3a.connection.timeout Default value: 50000 Default source: core-default.xml
fs.s3a.fast.buffer.size Default value: 1048576

Default source: core-default.xml

fs.s3a.fast.upload Default value: FALSE

Default source: core-default.xml

fs.s3a.impl Default value: org.apache.hadoop.fs.s3a.S3AFileSystem

Default source: core-default.xml

fs.s3a.max.total.tasks Default value: 1000

Default source: core-default.xml

fs.s3a.multipart.purge Default value: FALSE

Default source: core-default.xml

fs.s3a.multipart.purge.age Default value: 86400

Default source: core-default.xml

fs.s3a.multipart.size Default value: 104857600

Default source: core-default.xml

fs.s3a.multipart.threshold Default value: 2147483647

Default source: core-default.xml

fs.s3a.paging.maximum Default value: 5000

Default source: core-default.xml

fs.s3a.threads.core Default value: 15

Default source: core-default.xml

fs.s3a.threads.keepalivetime Default value: 60

Default source: core-default.xml

fs.s3a.threads.max Default value: 256

Default source: core-default.xml

fs.s3n.block.size Default value: 33554432

Default source: code

fs.s3n.blockSize Default value: 33554432

Default source: code

fs.s3n.impl Default value: org.apache.hadoop.fs.s3native.NativeS3FileSystem

Default source: code

fs.s3n.multipart.copy.block.size Default value: 5368709120

Default source: core-default.xml

fs.s3n.multipart.uploads.block.size Default value: 67108864

Default source: core-default.xml

fs.s3n.multipart.uploads.enabled Default value: FALSE

Default source: core-default.xml

fs.swift.impl Default value: org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem

Default source: core-default.xml

fs.webhdfs.impl Default value: org.apache.hadoop.hdfs.web.WebHdfsFileSystem

Default source: code

ftp.blocksize Default value: 67108864 Default source: core-default.xml
ftp.bytes-per-checksum Default value: 512

Default source: core-default.xml

ftp.client-write-packet-size Default value: 65536

Default source: core-default.xml

ftp.replication Default value: 3

Default source: core-default.xml

ftp.stream-buffer-size Default value: 4096

Default source: core-default.xml

ha.failover-controller.cli-check.rpc-timeout.ms Default value: 20000

Default source: core-default.xml

ha.failover-controller.graceful-fence.connection.retries Default value: 1

Default source: core-default.xml

ha.failover-controller.graceful-fence.rpc-timeout.ms Default value: 5000

Default source: core-default.xml

ha.failover-controller.new-active.rpc-timeout.ms Default value: 60000

Default source: core-default.xml

ha.health-monitor.check-interval.ms Default value: 1000

Default source: core-default.xml

ha.health-monitor.connect-retry-interval.ms Default value: 1000

Default source: core-default.xml

ha.health-monitor.rpc-timeout.ms Default value: 45000

Default source: core-default.xml

ha.health-monitor.sleep-after-disconnect.ms Default value: 1000

Default source: core-default.xml

ha.zookeeper.acl Default value: world:anyone:rwcda

Default source: core-default.xml

ha.zookeeper.parent-znode Default value: /hadoop-ha

Default source: core-default.xml

ha.zookeeper.session-timeout.ms Default value: 5000

Default source: core-default.xml

hadoop.common.configuration.version Default value: 0.23.0

Default source: core-default.xml

hadoop.http.authentication.kerberos.keytab Default value: ${user.home}/hadoop.keytab

Default source: core-default.xml

hadoop.http.authentication.kerberos.principal Default value: HTTP/_HOST@LOCALHOST

Default source: core-default.xml

hadoop.http.authentication.signature.secret Default value: com.mapr.security.maprauth.MaprSignatureSecretFactory

Default source: code

hadoop.http.authentication.signature.secret.file Default value: ${user.home}/hadoop-http-auth-signature-secret

Default source: core-default.xml

hadoop.http.authentication.signer.secret.provider Default value: random

Default source: code

hadoop.http.authentication.simple.anonymous.allowed Default value: TRUE

Default source: core-default.xml

hadoop.http.authentication.token.validity Default value: 36000

Default source: core-default.xml

hadoop.http.authentication.type Default value: simple

Default source: core-default.xml

hadoop.http.filter.initializers Default value: org.apache.hadoop.http.lib.StaticUserWebFilter

Default source: core-default.xml

hadoop.http.staticuser.user Default value: unknown

Default source: core-default.xml

hadoop.jetty.logs.serve.aliases Default value: TRUE

Default source: core-default.xml

hadoop.kerberos.kinit.command Default value: kinit

Default source: core-default.xml

hadoop.logfile.count Default value: 10

Default source: code

hadoop.logfile.size Default value: 10000000

Default source: code

hadoop.registry.jaas.context Default value: Client

Default source: core-default.xml

hadoop.registry.rm.enabled Default value: FALSE

Default source: core-default.xml

hadoop.registry.secure Default value: FALSE

Default source: core-default.xml

hadoop.registry.system.acls Default value: sasl:yarn@, sasl:mapred@, sasl:hdfs@

Default source: core-default.xml

hadoop.registry.zk.connection.timeout.ms Default value: 15000

Default source: core-default.xml

hadoop.registry.zk.quorum Default value: localhost:2181

Default source: core-default.xml

hadoop.registry.zk.retry.ceiling.ms Default value: 60000

Default source: core-default.xml

hadoop.registry.zk.retry.interval.ms Default value: 1000

Default source: core-default.xml

hadoop.registry.zk.retry.times Default value: 5

Default source: core-default.xml

hadoop.registry.zk.root Default value: /registry

Default source: core-default.xml

hadoop.registry.zk.session.timeout.ms Default value: 60000

Default source: core-default.xml

hadoop.rpc.protection Default value: authentication

Default source: core-default.xml

hadoop.rpc.socket.factory.class.default Default value: org.apache.hadoop.net.StandardSocketFactory

Default source: core-default.xml

hadoop.security.authentication Default value: SIMPLE

Default source: code

hadoop.security.authorization Default value: FALSE Default source: core-default.xml
hadoop.security.crypto.buffer.size Default value: 8192

Default source: core-default.xml

hadoop.security.crypto.cipher.suite Default value: AES/CTR/NoPadding

Default source: core-default.xml

hadoop.security.crypto.codec.classes.aes.ctr.nopadding

Default value: org.apache.hadoop.crypto.OpensslAesCtrCryptoCodec,

org.apache.hadoop.crypto.JceAesCtrCryptoCodec

Default source: core-default.xml

hadoop.security.group.mapping Default value: org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback

Default source: core-default.xml

hadoop.security.group.mapping.ldap.directory.search.timeout Default value: 10000

Default source: core-default.xml

hadoop.security.group.mapping.ldap.search.attr.group.name Default value: cn

Default source: core-default.xml

hadoop.security.group.mapping.ldap.search.attr.member Default value: member

Default source: core-default.xml

hadoop.security.group.mapping.ldap.search.filter.group Default value: (objectClass=group)

Default source: core-default.xml

hadoop.security.group.mapping.ldap.search.filter.user Default value: (&(objectClass=user)(sAMAccountName={0}))

Default source: core-default.xml

hadoop.security.group.mapping.ldap.ssl Default value: FALSE

Default source: core-default.xml

hadoop.security.groups.cache.secs Default value: 300

Default source: core-default.xml

hadoop.security.groups.cache.warn.after.ms Default value: 5000

Default source: core-default.xml

hadoop.security.groups.negative-cache.secs Default value: 30

Default source: core-default.xml

hadoop.security.instrumentation.requires.admin Default value: FALSE

Default source: core-default.xml

hadoop.security.java.secure.random.algorithm Default value: SHA1PRNG

Default source: core-default.xml

hadoop.security.java.security.login.config.jar.path Default value: /mapr.login.conf

Default source: code

hadoop.security.kms.client.authentication.retry-count Default value: 1

Default source: core-default.xml

hadoop.security.kms.client.encrypted.key.cache.expiry Default value: 43200000

Default source: core-default.xml

hadoop.security.kms.client.encrypted.key.cache.low-watermark Default value: 0.3f

Default source: core-default.xml

hadoop.security.kms.client.encrypted.key.cache.num.refill.threads Default value: 2

Default source: core-default.xml

hadoop.security.kms.client.encrypted.key.cache.size Default value: 500

Default source: core-default.xml

hadoop.security.random.device.file.path Default value: /dev/urandom

Default source: core-default.xml

hadoop.security.uid.cache.secs Default value: 14400

Default source: core-default.xml

hadoop.ssl.client.conf Default value: ssl-client.xml

Default source: core-default.xml

hadoop.ssl.enabled Default value: FALSE

Default source: core-default.xml

hadoop.ssl.enabled.protocols Default value: TLSv1

Default source: core-default.xml

hadoop.ssl.exclude.cipher.suites

Default value: SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA,

SSL_RSA_EXPORT_WITH_DES40_CBC_SHA,

SSL_RSA_EXPORT_WITH_RC4_40_MD5

Default source: code

hadoop.ssl.hostname.verifier Default value: DEFAULT

Default source: core-default.xml

hadoop.ssl.keystores.factory.class Default value: org.apache.hadoop.security.ssl.FileBasedKeyStoresFactory

Default source: core-default.xml

hadoop.ssl.require.client.cert Default value: FALSE

Default source: core-default.xml

hadoop.ssl.server.conf Default value: ssl-server.xml

Default source: core-default.xml

hadoop.tmp.dir Default value: /tmp/hadoop-${user.name}

Default source: core-default.xml

hadoop.user.group.static.mapping.overrides Default value: dr.who=;

Default source: core-default.xml

hadoop.util.hash.type Default value: murmur

Default source: core-default.xml

hadoop.work.around.non.threadsafe.getpwuid Default value: FALSE

Default source: core-default.xml

hadoop.workaround.non.threadsafe.getpwuid Default value: FALSE

Default source: code

io.bytes.per.checksum Default value: 512

Default source: core-default.xml

io.compression.codec.bzip2.library Default value: system-native

Default source: core-default.xml

io.compression.codecs

Default value: org.apache.hadoop.io.compress.DefaultCodec,

org.apache.hadoop.io.compress.GzipCodec,

org.apache.hadoop.io.compress.BZip2Codec,

org.apache.hadoop.io.compress.DeflateCodec,

org.apache.hadoop.io.compress.SnappyCodec

Default source: code

io.file.buffer.size Default value: 8192

Default source: code

io.map.index.interval Default value: 128

Default source: core-default.xml

io.map.index.skip Default value: 0

Default source: core-default.xml

io.mapfile.bloom.error.rate Default value: 0.005

Default source: core-default.xml

io.mapfile.bloom.size Default value: 1048576

Default source: core-default.xml

io.native.lib.available Default value: TRUE

Default source: core-default.xml

io.seqfile.compress.blocksize Default value: 1000000

Default source: core-default.xml

io.seqfile.lazydecompress Default value: TRUE

Default source: core-default.xml

io.seqfile.local.dir Default value: ${hadoop.tmp.dir}/io/local

Default source: core-default.xml

io.seqfile.sorter.recordlimit Default value: 1000000

Default source: core-default.xml

io.serializations Default value: org.apache.hadoop.io.serializer.WritableSerialization

Default source: code

io.skip.checksum.errors Default value: FALSE

Default source: core-default.xml

ipc.client.connect.max.retries Default value: 10

Default source: core-default.xml

ipc.client.connect.max.retries.on.timeouts Default value: 45

Default source: core-default.xml

ipc.client.connect.retry.interval Default value: 1000

Default source: core-default.xml

ipc.client.connect.timeout Default value: 20000

Default source: core-default.xml

ipc.client.connection.maxidletime Default value: 10000

Default source: core-default.xml

ipc.client.fallback-to-simple-auth-allowed Default value: FALSE

Default source: core-default.xml

ipc.client.idlethreshold Default value: 4000

Default source: core-default.xml

ipc.client.kill.max Default value: 10

Default source: core-default.xml

ipc.client.max.connection.setup.timeout Default value: 20

Default source: code

ipc.client.tcpnodelay Default value: TRUE

Default source: code

ipc.server.listen.queue.size Default value: 128

Default source: core-default.xml

ipc.server.max.connections Default value: 0

Default source: core-default.xml

ipc.server.tcpnodelay Default value: TRUE

Default source: code

mapr.home Default value: /opt/mapr

Default source: code

mapr.host Default value: <hostname>

Default source: code

mapr.localvolumes.path Default value: /var/mapr/local

Default source: code

mapr.mapred.localvolume.mount.path Default value: ${mapr.localvolumes.path}/${mapr.host}/mapred

Default source: code

mapr.mapred.localvolume.root.dir.path Default value: ${mapr.mapred.localvolume.mount.path}/${mapr.mapred.localvolume.root.dir.name} Default source: code
net.topology.impl Default value: org.apache.hadoop.net.NetworkTopology

Default source: core-default.xml

net.topology.node.switch.mapping.impl Default value: org.apache.hadoop.net.ScriptBasedMapping

Default source: core-default.xml

net.topology.script.number.args Default value: 100

Default source: core-default.xml

nfs.exports.allowed.hosts Default value: * rw

Default source: core-default.xml

rpc.metrics.quantile.enable Default value: FALSE

Default source: core-default.xml

s3.blocksize Default value: 67108864

Default source: core-default.xml

s3.bytes-per-checksum Default value: 512

Default source: core-default.xml

s3.client-write-packet-size Default value: 65536

Default source: core-default.xml

s3.replication Default value: 3

Default source: core-default.xml

s3.stream-buffer-size Default value: 4096

Default source: core-default.xml

s3native.blocksize Default value: 67108864

Default source: core-default.xml

s3native.bytes-per-checksum Default value: 512

Default source: core-default.xml

s3native.client-write-packet-size Default value: 65536

Default source: core-default.xml

s3native.replication Default value: 3

Default source: core-default.xml

s3native.stream-buffer-size Default value: 4096

Default source: core-default.xml

tfile.fs.input.buffer.size Default value: 262144

Default source: core-default.xml

tfile.fs.output.buffer.size Default value: 262144

Default source: core-default.xml

tfile.io.chunk.size Default value: 1048576

Default source: core-default.xml