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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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+
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+@rem included in all the hadoop scripts with source command
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+@rem should not be executable directly
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+@rem also should not be passed any arguments, since we need original %*
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+
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+if not defined HADOOP_COMMON_DIR (
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+ set HADOOP_COMMON_DIR=share\hadoop\common
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+)
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+if not defined HADOOP_COMMON_LIB_JARS_DIR (
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+ set HADOOP_COMMON_LIB_JARS_DIR=share\hadoop\common\lib
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+)
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+if not defined HADOOP_COMMON_LIB_NATIVE_DIR (
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+ set HADOOP_COMMON_LIB_NATIVE_DIR=lib\native
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+)
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+if not defined HDFS_DIR (
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+ set HDFS_DIR=share\hadoop\hdfs
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+)
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+if not defined HDFS_LIB_JARS_DIR (
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+ set HDFS_LIB_JARS_DIR=share\hadoop\hdfs\lib
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+)
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+if not defined YARN_DIR (
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+ set YARN_DIR=share\hadoop\yarn
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+)
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+if not defined YARN_LIB_JARS_DIR (
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+ set YARN_LIB_JARS_DIR=share\hadoop\yarn\lib
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+)
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+if not defined MAPRED_DIR (
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+ set MAPRED_DIR=share\hadoop\mapreduce
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+)
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+if not defined MAPRED_LIB_JARS_DIR (
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+ set MAPRED_LIB_JARS_DIR=share\hadoop\mapreduce\lib
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+)
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+
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+@rem the root of the Hadoop installation
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+set HADOOP_HOME=%~dp0
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+for %%i in (%HADOOP_HOME%.) do (
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+ set HADOOP_HOME=%%~dpi
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+)
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+if "%HADOOP_HOME:~-1%" == "\" (
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+ set HADOOP_HOME=%HADOOP_HOME:~0,-1%
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+)
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+
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+if not exist %HADOOP_HOME%\share\hadoop\common\hadoop-common-*.jar (
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+ @echo +================================================================+
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+ @echo ^| Error: HADOOP_HOME is not set correctly ^|
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+ @echo +----------------------------------------------------------------+
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+ @echo ^| Please set your HADOOP_HOME variable to the absolute path of ^|
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+ @echo ^| the directory that contains the hadoop distribution ^|
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+ @echo +================================================================+
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+ exit /b 1
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+)
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+
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+set HADOOP_CONF_DIR=%HADOOP_HOME%\etc\hadoop
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+
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+@rem
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+@rem Allow alternate conf dir location.
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+@rem
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+
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+if "%1" == "--config" (
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+ set HADOOP_CONF_DIR=%2
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+ shift
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+ shift
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+)
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+
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+@rem
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+@rem check to see it is specified whether to use the slaves or the
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+@rem masters file
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+@rem
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+
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+if "%1" == "--hosts" (
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+ set HADOOP_SLAVES=%HADOOP_CONF_DIR%\%2
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+ shift
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+ shift
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+)
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+
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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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+@rem
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+@rem setup java environment variables
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+@rem
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+
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+if not defined JAVA_HOME (
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+ echo Error: JAVA_HOME is not set.
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+ goto :eof
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+)
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+
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+if not exist %JAVA_HOME%\bin\java.exe (
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+ echo Error: JAVA_HOME is incorrectly set.
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+ echo Please update %HADOOP_HOME%\conf\hadoop-env.cmd
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+ goto :eof
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+)
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+
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+set JAVA=%JAVA_HOME%\bin\java
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+@rem some Java parameters
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+set JAVA_HEAP_MAX=-Xmx1000m
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+
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+@rem
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+@rem check envvars which might override default args
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+@rem
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+
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+if defined HADOOP_HEAPSIZE (
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+ set JAVA_HEAP_MAX=-Xmx%HADOOP_HEAPSIZE%m
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+)
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+
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+@rem
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+@rem CLASSPATH initially contains %HADOOP_CONF_DIR%
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+@rem
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+
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+set CLASSPATH=%HADOOP_CONF_DIR%
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+
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+if not defined HADOOP_COMMON_HOME (
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+ if exist %HADOOP_HOME%\share\hadoop\common (
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+ set HADOOP_COMMON_HOME=%HADOOP_HOME%
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+ )
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+)
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+
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+@rem
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+@rem for releases, add core hadoop jar & webapps to CLASSPATH
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+@rem
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+
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+if exist %HADOOP_COMMON_HOME%\%HADOOP_COMMON_DIR%\webapps (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_COMMON_HOME%\%HADOOP_COMMON_DIR%
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+)
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+
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+if exist %HADOOP_COMMON_HOME%\%HADOOP_COMMON_LIB_JARS_DIR% (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_COMMON_HOME%\%HADOOP_COMMON_LIB_JARS_DIR%\*
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+)
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+
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+set CLASSPATH=!CLASSPATH!;%HADOOP_COMMON_HOME%\%HADOOP_COMMON_DIR%\*
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+
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+@rem
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+@rem add user-specified CLASSPATH last
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+@rem
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+
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+if defined HADOOP_CLASSPATH (
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+ if defined HADOOP_USER_CLASSPATH_FIRST (
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+ set CLASSPATH=%HADOOP_CLASSPATH%;%CLASSPATH%;
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+ ) else (
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+ set CLASSPATH=%CLASSPATH%;%HADOOP_CLASSPATH%;
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+ )
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+)
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+
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+@rem
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+@rem default log directory % file
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+@rem
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+
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+if not defined HADOOP_LOG_DIR (
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+ set HADOOP_LOG_DIR=%HADOOP_HOME%\logs
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+)
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+
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+if not defined HADOOP_LOGFILE (
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+ set HADOOP_LOGFILE=hadoop.log
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+)
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+
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+if not defined HADOOP_ROOT_LOGGER (
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+ set HADOOP_ROOT_LOGGER=INFO,console
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+)
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+
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+@rem
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+@rem default policy file for service-level authorization
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+@rem
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+
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+if not defined HADOOP_POLICYFILE (
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+ set HADOOP_POLICYFILE=hadoop-policy.xml
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+)
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+
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+@rem
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+@rem setup a default TOOL_PATH
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+@rem
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+set TOOL_PATH=%HADOOP_HOME%\share\hadoop\tools\lib\*
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+
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.log.dir=%HADOOP_LOG_DIR%
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.log.file=%HADOOP_LOGFILE%
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.home.dir=%HADOOP_HOME%
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.id.str=%HADOOP_IDENT_STRING%
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.root.logger=%HADOOP_ROOT_LOGGER%
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+
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+if defined JAVA_LIBRARY_PATH (
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+ set HADOOP_OPTS=%HADOOP_OPTS% -Djava.library.path=%JAVA_LIBRARY_PATH%
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+)
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+set HADOOP_OPTS=%HADOOP_OPTS% -Dhadoop.policy.file=%HADOOP_POLICYFILE%
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+
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+@rem
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+@rem Disable ipv6 as it can cause issues
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+@rem
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+
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+set HADOOP_OPTS=%HADOOP_OPTS% -Djava.net.preferIPv4Stack=true
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+
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+@rem
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+@rem put hdfs in classpath if present
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+@rem
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+
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+if not defined HADOOP_HDFS_HOME (
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+ if exist %HADOOP_HOME%\%HDFS_DIR% (
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+ set HADOOP_HDFS_HOME=%HADOOP_HOME%
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+ )
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+)
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+
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+if exist %HADOOP_HDFS_HOME%\%HDFS_DIR%\webapps (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_HDFS_HOME%\%HDFS_DIR%
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+)
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+
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+if exist %HADOOP_HDFS_HOME%\%HDFS_LIB_JARS_DIR% (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_HDFS_HOME%\%HDFS_LIB_JARS_DIR%\*
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+)
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+
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+set CLASSPATH=!CLASSPATH!;%HADOOP_HDFS_HOME%\%HDFS_DIR%\*
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+
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+@rem
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+@rem put yarn in classpath if present
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+@rem
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+
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+if not defined HADOOP_YARN_HOME (
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+ if exist %HADOOP_HOME%\%YARN_DIR% (
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+ set HADOOP_YARN_HOME=%HADOOP_HOME%
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+ )
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+)
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+
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+if exist %HADOOP_YARN_HOME%\%YARN_DIR%\webapps (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_YARN_HOME%\%YARN_DIR%
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+)
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+
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+if exist %HADOOP_YARN_HOME%\%YARN_LIB_JARS_DIR% (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_YARN_HOME%\%YARN_LIB_JARS_DIR%\*
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+)
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+
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+set CLASSPATH=!CLASSPATH!;%HADOOP_YARN_HOME%\%YARN_DIR%\*
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+
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+@rem
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+@rem put mapred in classpath if present AND different from YARN
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+@rem
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+
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+if not defined HADOOP_MAPRED_HOME (
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+ if exist %HADOOP_HOME%\%MAPRED_DIR% (
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+ set HADOOP_MAPRED_HOME=%HADOOP_HOME%
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+ )
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+)
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+
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+if not "%HADOOP_MAPRED_HOME%\%MAPRED_DIR%" == "%HADOOP_YARN_HOME%\%YARN_DIR%" (
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+
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+ if exist %HADOOP_MAPRED_HOME%\%MAPRED_DIR%\webapps (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_MAPRED_HOME%\%MAPRED_DIR%
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+ )
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+
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+ if exist %HADOOP_MAPRED_HOME%\%MAPRED_LIB_JARS_DIR% (
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_MAPRED_HOME%\%MAPRED_LIB_JARS_DIR%\*
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+ )
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+
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+ set CLASSPATH=!CLASSPATH!;%HADOOP_MAPRED_HOME%\%MAPRED_DIR%\*
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+)
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+
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+:eof
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Suresh Srinivas