hadoop core-default hdfs-default默认配置

gbless

Java代码  

• dfs.replication.interval=3,  
  
• fs.hsftp.impl=org.apache.hadoop.hdfs.HsftpFileSystem,  
  
• dfs.safemode.extension=30000,  
  
• ipc.server.tcpnodelay=false,  
  
• dfs.web.ugi=webuser,webgroup,  
  
• fs.checkpoint.dir=${hadoop.tmp.dir}/dfs/namesecondary,  
  
• dfs.permissions.supergroup=supergroup,  
  
• dfs.datanode.http.address=0.0.0.0:50075,  
  
• dfs.replication.min=1,  
  
• dfs.https.address=0.0.0.0:50470,  
  
• dfs.datanode.dns.nameserver=default,  
  
• dfs.http.address=0.0.0.0:50070,  
  
• io.bytes.per.checksum=512,  
  
• dfs.blockreport.intervalMsec=3600000,  
  
• hadoop.util.hash.type=murmur,  
  
• dfs.data.dir=${hadoop.tmp.dir}/dfs/data,  
  
• fs.hdfs.impl=org.apache.hadoop.hdfs.DistributedFileSystem,  
  
• fs.ramfs.impl=org.apache.hadoop.fs.InMemoryFileSystem,  
  
• dfs.block.size=512,  
  
• fs.hftp.impl=org.apache.hadoop.hdfs.HftpFileSystem,  
  
• fs.checkpoint.period=3600,  
  
• dfs.https.client.keystore.resource=ssl-client.xml,  
  
• hadoop.logfile.count=10,  
  
• dfs.support.append=false,  
  
• ipc.client.connection.maxidletime=10000,  
  
• io.seqfile.lazydecompress=true,  
  
• dfs.datanode.dns.interface=default,  
  
• fs.checkpoint.size=67108864,  
  
• dfs.max.objects=0,  
  
• local.cache.size=10737418240,  
  
• fs.s3n.impl=org.apache.hadoop.fs.s3native.NativeS3FileSystem,  
  
• fs.file.impl=org.apache.hadoop.fs.LocalFileSystem,  
  
• fs.kfs.impl=org.apache.hadoop.fs.kfs.KosmosFileSystem,  
  
• fs.s3.buffer.dir=${hadoop.tmp.dir}/s3,  
  
• dfs.client.block.write.retries=3,  
  
• ipc.client.kill.max=10,  
  
• dfs.datanode.du.reserved=0,  
  
• hadoop.security.authorization=false,  
  
• dfs.replication.max=512,  
  
• dfs.balance.bandwidthPerSec=1048576,  
  
• fs.s3.sleepTimeSeconds=10,  
  
• fs.default.name=hdfs://10.0.18.105:54310,  
  
• hadoop.rpc.socket.factory.class.default=org.apache.hadoop.net.StandardSocketFactory,  
  
• topology.node.switch.mapping.impl=org.apache.hadoop.net.ScriptBasedMapping,  
  
• dfs.datanode.address=0.0.0.0:50010,  
  
• dfs.access.time.precision=3600000,  
  
• dfs.heartbeat.interval=3,  
  
• dfs.replication.considerLoad=true,  
  
• dfs.default.chunk.view.size=32768,  
  
• io.file.buffer.size=4096,  
  
• dfs.https.need.client.auth=false,  
  
• dfs.datanode.ipc.address=0.0.0.0:50020,  
  
• dfs.blockreport.initialDelay=0,  
  
• fs.har.impl.disable.cache=true,  
  
• hadoop.native.lib=true,  
  
• fs.s3.block.size=67108864,  
  
• dfs.replication=2,  
  
• io.compression.codecs=org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec,  
  
• dfs.https.enable=false,  
  
• io.seqfile.compress.blocksize=1000000,  
  
• fs.har.impl=org.apache.hadoop.fs.HarFileSystem,  
  
• io.mapfile.bloom.error.rate=0.005,  
  
• dfs.namenode.decommission.interval=30,  
  
• io.skip.checksum.errors=false,  
  
• fs.s3.maxRetries=4,  
  
• ipc.server.listen.queue.size=128,  
  
• fs.trash.interval=0,  
  
• fs.s3.impl=org.apache.hadoop.fs.s3.S3FileSystem,  
  
• io.seqfile.sorter.recordlimit=1000000,  
  
• io.mapfile.bloom.size=1048576,  
  
• dfs.namenode.startup=FORMAT,  
  
• dfs.namenode.decommission.nodes.per.interval=5,  
  
• webinterface.private.actions=false,  
  
• dfs.name.edits.dir=${dfs.name.dir},  
  
• hadoop.tmp.dir=/home/dikar/hadoop/tmp,  
  
• fs.checkpoint.edits.dir=${fs.checkpoint.dir},  
  
• dfs.safemode.threshold.pct=0.999f,  
  
• ipc.client.idlethreshold=4000,  
  
• dfs.permissions=true,  
  
• dfs.namenode.handler.count=10,  
  
• hadoop.logfile.size=10000000,  
  
• dfs.namenode.logging.level=info,  
  
• dfs.datanode.https.address=0.0.0.0:50475,  
  
• dfs.secondary.http.address=0.0.0.0:50090,  
  
• topology.script.number.args=100,  
  
• dfs.https.server.keystore.resource=ssl-server.xml,  
  
• fs.ftp.impl=org.apache.hadoop.fs.ftp.FTPFileSystem,  
  
• dfs.name.dir=${hadoop.tmp.dir}/dfs/name,  
  
• io.serializations=org.apache.hadoop.io.serializer.WritableSerialization,  
  
• ipc.client.connect.max.retries=10,  
  
• ipc.client.tcpnodelay=false,  
  
• dfs.datanode.handler.count=3,  
  
• dfs.df.interval=60000  
  

　　

 

   看这个默认的配置，大家就会发现

  

Java代码  

• hadoop.tmp.dir   
  

 

    这个配置的重要性了，其实tmp 真的不是temp *_<

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