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 |