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+@echo off
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+@rem Licensed to the Apache Software Foundation (ASF) under one or more
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+@rem contributor license agreements. See the NOTICE file distributed with
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+@rem this work for additional information regarding copyright ownership.
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+@rem The ASF licenses this file to You under the Apache License, Version 2.0
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+@rem (the "License"); you may not use this file except in compliance with
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+@rem the License. You may obtain a copy of the License at
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+@rem
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+@rem http://www.apache.org/licenses/LICENSE-2.0
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+@rem
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+@rem Unless required by applicable law or agreed to in writing, software
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+@rem distributed under the License is distributed on an "AS IS" BASIS,
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+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+@rem See the License for the specific language governing permissions and
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+@rem limitations under the License.
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+@rem
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+setlocal enabledelayedexpansion
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+
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+if not defined HADOOP_BIN_PATH (
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+ set HADOOP_BIN_PATH=%~dp0
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+)
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+
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+if "%HADOOP_BIN_PATH:~-1%" == "\" (
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+ set HADOOP_BIN_PATH=%HADOOP_BIN_PATH:~0,-1%
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+)
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+
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+set DEFAULT_LIBEXEC_DIR=%HADOOP_BIN_PATH%\..\libexec
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+if not defined HADOOP_LIBEXEC_DIR (
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+ set HADOOP_LIBEXEC_DIR=%DEFAULT_LIBEXEC_DIR%
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+)
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+
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+call %HADOOP_LIBEXEC_DIR%\hdfs-config.cmd %*
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+if "%1" == "--config" (
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+ shift
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+ shift
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+)
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+
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+:main
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+ if exist %HADOOP_CONF_DIR%\hadoop-env.cmd (
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+ call %HADOOP_CONF_DIR%\hadoop-env.cmd
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+ )
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+
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+ set hdfs-command=%1
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+ call :make_command_arguments %*
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+
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+ if not defined hdfs-command (
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+ goto print_usage
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+ )
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+
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+ call :%hdfs-command% %hdfs-command-arguments%
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+ set java_arguments=%JAVA_HEAP_MAX% %HADOOP_OPTS% -classpath %CLASSPATH% %CLASS% %hdfs-command-arguments%
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+ call %JAVA% %java_arguments%
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+
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+goto :eof
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+
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+:namenode
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+ set CLASS=org.apache.hadoop.hdfs.server.namenode.NameNode
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_NAMENODE_OPTS%
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+ goto :eof
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+
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+:zkfc
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+ set CLASS=org.apache.hadoop.hdfs.tools.DFSZKFailoverController
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_ZKFC_OPTS%
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+ goto :eof
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+
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+:secondarynamenode
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+ set CLASS=org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_SECONDARYNAMENODE_OPTS%
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+ goto :eof
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+
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+:datanode
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+ set CLASS=org.apache.hadoop.hdfs.server.datanode.DataNode
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+ set HADOOP_OPTS=%HADOOP_OPTS% -server %HADOOP_DATANODE_OPTS%
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+ goto :eof
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+
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+:dfs
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+ set CLASS=org.apache.hadoop.fs.FsShell
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_CLIENT_OPTS%
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+ goto :eof
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+
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+:dfsadmin
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+ set CLASS=org.apache.hadoop.hdfs.tools.DFSAdmin
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_CLIENT_OPTS%
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+ goto :eof
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+
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+:haadmin
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+ set CLASS=org.apache.hadoop.hdfs.tools.DFSHAAdmin
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+ set CLASSPATH=%CLASSPATH%;%TOOL_PATH%
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_CLIENT_OPTS%
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+ goto :eof
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+
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+:fsck
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+ set CLASS=org.apache.hadoop.hdfs.tools.DFSck
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_CLIENT_OPTS%
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+ goto :eof
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+
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+:balancer
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+ set CLASS=org.apache.hadoop.hdfs.server.balancer.Balancer
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+ set HADOOP_OPTS=%HADOOP_OPTS% %HADOOP_BALANCER_OPTS%
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+ goto :eof
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+
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+:jmxget
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+ set CLASS=org.apache.hadoop.hdfs.tools.JMXGet
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+ goto :eof
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+
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+:oiv
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+ set CLASS=org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewer
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+ goto :eof
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+
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+:oev
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+ set CLASS=org.apache.hadoop.hdfs.tools.offlineEditsViewer.OfflineEditsViewer
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+ goto :eof
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+
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+:fetchdt
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+ set CLASS=org.apache.hadoop.hdfs.tools.DelegationTokenFetcher
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+ goto :eof
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+
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+:getconf
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+ set CLASS=org.apache.hadoop.hdfs.tools.GetConf
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+ goto :eof
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+
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+:groups
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+ set CLASS=org.apache.hadoop.hdfs.tools.GetGroups
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+ goto :eof
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+
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+@rem This changes %1, %2 etc. Hence those cannot be used after calling this.
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+:make_command_arguments
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+ if "%1" == "--config" (
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+ shift
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+ shift
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+ )
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+ if [%2] == [] goto :eof
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+ shift
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+ set _hdfsarguments=
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+ :MakeCmdArgsLoop
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+ if [%1]==[] goto :EndLoop
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+
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+ if not defined _hdfsarguments (
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+ set _hdfsarguments=%1
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+ ) else (
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+ set _hdfsarguments=!_hdfsarguments! %1
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+ )
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+ shift
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+ goto :MakeCmdArgsLoop
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+ :EndLoop
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+ set hdfs-command-arguments=%_hdfsarguments%
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+ goto :eof
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+
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+:print_usage
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+ @echo Usage: hdfs [--config confdir] COMMAND
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+ @echo where COMMAND is one of:
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+ @echo dfs run a filesystem command on the file systems supported in Hadoop.
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+ @echo namenode -format format the DFS filesystem
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+ @echo secondarynamenode run the DFS secondary namenode
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+ @echo namenode run the DFS namenode
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+ @echo zkfc run the ZK Failover Controller daemon
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+ @echo datanode run a DFS datanode
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+ @echo dfsadmin run a DFS admin client
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+ @echo fsck run a DFS filesystem checking utility
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+ @echo balancer run a cluster balancing utility
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+ @echo jmxget get JMX exported values from NameNode or DataNode.
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+ @echo oiv apply the offline fsimage viewer to an fsimage
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+ @echo oev apply the offline edits viewer to an edits file
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+ @echo fetchdt fetch a delegation token from the NameNode
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+ @echo getconf get config values from configuration
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+ @echo groups get the groups which users belong to
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+ @echo Use -help to see options
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+ @echo.
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+ @echo Most commands print help when invoked w/o parameters.
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+
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+endlocal
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Suresh Srinivas