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https://issues.apache.org/jira/browse/PIG-2230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xuting zhao updated PIG-2230:
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Attachment: EmptyParam.patch
> Display empty param instead of usage error message
> --------------------------------------------------
>
> Key: PIG-2230
> URL: https://issues.apache.org/jira/browse/PIG-2230
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.8.0, 0.9.0
> Reporter: Anitha Raju
> Assignee: xuting zhao
> Labels: newbie
> Attachments: EmptyParam.patch, EmptyParam.patch
>
>
> Hi,
> When empty param is passed in the command line, it prints usage error. Even
> if the value of the param is a space " " it shows the usage error.
> ---------------
> $ pig -useversion 0.9 -param test=" " test.pig
> USING: /grid/0/gs/pig/0.9
> 2011-08-22 05:06:08,538 [main] INFO org.apache.pig.Main - Logging error
> messages to: /homes/anithar/pig_1313989568534.log
> Apache Pig version 0.9.0.1105251322 (r1127671)
> compiled May 25 2011, 20:22:22
> USAGE: Pig [options] [-] : Run interactively in grunt shell.
> Pig [options] -e[xecute] cmd [cmd ...] : Run cmd(s).
> Pig [options] [-f[ile]] file : Run cmds found in file.
> options include:
> -4, -log4jconf - Log4j configuration file, overrides log conf
> -b, -brief - Brief logging (no timestamps)
> -c, -check - Syntax check
> -d, -debug - Debug level, INFO is default
> -e, -execute - Commands to execute (within quotes)
> -f, -file - Path to the script to execute
> -g, -embedded - ScriptEngine classname or keyword for the ScriptEngine
> -h, -help - Display this message. You can specify topic to get help for
> that topic.
> properties is the only topic currently supported: -h properties.
> -i, -version - Display version information
> -l, -logfile - Path to client side log file; default is current working
> directory.
> -m, -param_file - Path to the parameter file
> -p, -param - Key value pair of the form param=val
> -r, -dryrun - Produces script with substituted parameters. Script is not
> executed.
> -t, -optimizer_off - Turn optimizations off. The following values are
> supported:
> SplitFilter - Split filter conditions
> MergeFilter - Merge filter conditions
> PushUpFilter - Filter as early as possible
> PushDownForeachFlatten - Join or explode as late as possible
> ColumnMapKeyPrune - Remove unused data
> LimitOptimizer - Limit as early as possible
> AddForEach - Add ForEach to remove unneeded columns
> MergeForEach - Merge adjacent ForEach
> LogicalExpressionSimplifier - Combine multiple expressions
> All - Disable all optimizations
> All optimizations are enabled by default. Optimization values are
> case insensitive.
> -v, -verbose - Print all error messages to screen
> -w, -warning - Turn warning logging on; also turns warning aggregation off
> -x, -exectype - Set execution mode: local|mapreduce, default is mapreduce.
> -F, -stop_on_failure - Aborts execution on the first failed job; default
> is off
> -M, -no_multiquery - Turn multiquery optimization off; default is on
> -P, -propertyFile - Path to property file
> -------------------
> Instead of printing the usage error, can you show which param is empty.
> Regards,
> Anitha
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