Package org.apache.hadoop.yarn.api

Interface ApplicationConstants

@Public @Evolving public interface ApplicationConstants
This is the API for the applications comprising of constants that YARN sets up for the applications and the containers. TODO: Investigate the semantics and security of each cross-boundary refs.

  • Field Details

    • APP_SUBMIT_TIME_ENV

      static final String APP_SUBMIT_TIME_ENV
      The environment variable for APP_SUBMIT_TIME. Set in AppMaster environment only
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    • CONTAINER_TOKEN_FILE_ENV_NAME

      static final String CONTAINER_TOKEN_FILE_ENV_NAME
      The cache file into which container token is written
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    • KEYSTORE_FILE_LOCATION_ENV_NAME

      static final String KEYSTORE_FILE_LOCATION_ENV_NAME
      The file into which the keystore containing the AM's certificate is written.
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    • KEYSTORE_PASSWORD_ENV_NAME

      static final String KEYSTORE_PASSWORD_ENV_NAME
      The password for the AM's keystore.
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    • TRUSTSTORE_FILE_LOCATION_ENV_NAME

      static final String TRUSTSTORE_FILE_LOCATION_ENV_NAME
      The file into which the truststore containing the AM's certificate is written.
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    • TRUSTSTORE_PASSWORD_ENV_NAME

      static final String TRUSTSTORE_PASSWORD_ENV_NAME
      The password for the AM's truststore.
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    • APPLICATION_WEB_PROXY_BASE_ENV

      static final String APPLICATION_WEB_PROXY_BASE_ENV
      The environmental variable for APPLICATION_WEB_PROXY_BASE. Set in ApplicationMaster's environment only. This states that for all non-relative web URLs in the app masters web UI what base should they have.
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    • JVM_ADD_OPENS_VAR

      static final String JVM_ADD_OPENS_VAR
      The environmental variable for JDK17's add-opens workaround. This should be replaced either a correctly formatted add-opens option if JDK17 is used or an empty string if not on container launch.
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    • LOG_DIR_EXPANSION_VAR

      static final String LOG_DIR_EXPANSION_VAR
      The temporary environmental variable for container log directory. This should be replaced by real container log directory on container launch.
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    • CLASS_PATH_SEPARATOR

      @Public @Unstable static final String CLASS_PATH_SEPARATOR
      This constant is used to construct class path and it will be replaced with real class path separator(':' for Linux and ';' for Windows) by NodeManager on container launch. User has to use this constant to construct class path if user wants cross-platform practice i.e. submit an application from a Windows client to a Linux/Unix server or vice versa.
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    • PARAMETER_EXPANSION_LEFT

      @Public @Unstable static final String PARAMETER_EXPANSION_LEFT
      The following two constants are used to expand parameter and it will be replaced with real parameter expansion marker ('%' for Windows and '$' for Linux) by NodeManager on container launch. For example: {{VAR}} will be replaced as $VAR on Linux, and %VAR% on Windows. User has to use this constant to construct class path if user wants cross-platform practice i.e. submit an application from a Windows client to a Linux/Unix server or vice versa.
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    • PARAMETER_EXPANSION_RIGHT

      @Public @Unstable static final String PARAMETER_EXPANSION_RIGHT
      User has to use this constant to construct class path if user wants cross-platform practice i.e. submit an application from a Windows client to a Linux/Unix server or vice versa.
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    • STDERR

      static final String STDERR
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    • STDOUT

      static final String STDOUT
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