在 pig v0.15 中设置队列名称答案

【问题标题】：Setting queue name in pig v0.15在 pig v0.15 中设置队列名称
【发布时间】：2018-09-09 20:54:07
【问题描述】：

我在尝试通过 shell 执行 pig 脚本时遇到异常。

JobId   Alias   Feature Message Outputs
job_1520637789949_340250        A,B,D,top_rec   GROUP_BY        Message: java.io.IOException: org.apache.hadoop.yarn.exceptions.YarnException: Failed to submit application_1520637789949_340250 to YARN : Application rejected by queue placement policy

我了解这是由于没有为 MR 执行设置正确的队列名称。为了找到如何为mapreduce 工作设置queuename，我尝试搜索彻底的帮助，pig --help，它在下面列出了选项

Apache Pig version 0.15.0-mapr-1611 (rexported)
compiled Dec 06 2016, 05:50:07

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:
            ConstantCalculator - Calculate constants at compile time
            SplitFilter - Split filter conditions
            PushUpFilter - Filter as early as possible
            MergeFilter - Merge filter conditions
            PushDownForeachFlatten - Join or explode as late as possible
            LimitOptimizer - Limit as early as possible
            ColumnMapKeyPrune - Remove unused data
            AddForEach - Add ForEach to remove unneeded columns
            MergeForEach - Merge adjacent ForEach
            GroupByConstParallelSetter - Force parallel 1 for "group all" statement
            PartitionFilterOptimizer - Pushdown partition filter conditions to loader implementing LoadMetaData
            PredicatePushdownOptimizer - Pushdown filter predicates to loader implementing LoadPredicatePushDown
            All - Disable all optimizations
        All optimizations listed here 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|tez, 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
    -N, -no_fetch - Turn fetch optimization off; default is on
    -P, -propertyFile - Path to property file
    -printCmdDebug - Overrides anything else and prints the actual command used to run Pig, including
                     any environment variables that are set by the pig command.
18/03/30 13:03:05 INFO pig.Main: Pig script completed in 163 milliseconds (163 ms)

我试过pig -p mapreduce.job.queuename=my_queue;并且能够登录到 grunt 没有任何错误。

但是，在第一个命令本身上，它抛出了下面

ERROR 2997: Encountered IOException. org.apache.pig.tools.parameters.ParseException: Encountered " <OTHER> ".job.queuename=my_queue "" at line 1, column 10.
Was expecting:
    "=" ...

我不确定，我做得对吗？

【问题讨论】：

标签： hadoop mapreduce bigdata apache-pig mapr

【解决方案1】：

要在pig 0.15 中设置queuename，我有以下选项（它也可能适用于其他版本）：

1) pig 带有一个使用队列名称启动 pig 会话的选项。下面的命令简单使用

pig -Dmapreduce.job.queuename=my_queue

2) 另一种选择是在 grunt shell 或 pig 脚本本身中设置相同的值。

set mapreduce.job.queuename my_queue;

【讨论】：