首页 \ 问答 \ 使用oozie distcp-action将文件从hdfs目录复制到另一个目录(Copying files from a hdfs directory to another with oozie distcp-action)

使用oozie distcp-action将文件从hdfs目录复制到另一个目录(Copying files from a hdfs directory to another with oozie distcp-action)

我的行为

start_fair_usage以状态okey结束,但test_copy返回

Main class [org.apache.oozie.action.hadoop.DistcpMain], main() threw exception, null

/user/comverse/data/${1}_B我有很多不同的文件,其中一些我想复制到${NAME_NODE}/user/evkuzmin/output 。 为此,我尝试从包含路径数组的copy_files.sh传递路径到我需要的文件。

  <action name="start_fair_usage">
    <shell xmlns="uri:oozie:shell-action:0.1">
      <job-tracker>${JOB_TRACKER}</job-tracker>
      <name-node>${NAME_NODE}</name-node>
      <exec>${copy_file}</exec>      
      <argument>${today_without_dash}</argument>
      <argument>${mta}</argument>
      <!-- <file>${path}#${start_fair_usage}</file> -->
      <file>${path}${copy_file}#${copy_file}</file>
      <capture-output/>
    </shell>
    <ok to="test_copy"/>
    <error to="KILL"/>
  </action>

  <action name="test_copy">
    <distcp xmlns="uri:oozie:distcp-action:0.2">
      <job-tracker>${JOB_TRACKER}</job-tracker>
      <name-node>${NAME_NODE}</name-node>
      <arg>${wf:actionData('start_fair_usage')['paths']}</arg>
      <!-- <arg>${NAME_NODE}/user/evkuzmin/input/*</arg> -->
      <arg>${NAME_NODE}/user/evkuzmin/output</arg>
    </distcp>
    <ok to="END"/>
    <error to="KILL"/>
  </action>

start_fair_usage启动start_fair_usage

echo ${1} 
echo ${2}

dirs=(
    /user/comverse/data/${1}_B
    )
args=()

for i in $(hadoop fs -ls "${dirs[@]}" | egrep ${2}.gz | awk -F " " '{print $8}')
do
    args+=("$i")
    echo "copy file - "${i}
done

paths=${args}
echo ${paths}

My actions

start_fair_usage ends with status okey, but test_copy returns

Main class [org.apache.oozie.action.hadoop.DistcpMain], main() threw exception, null

In /user/comverse/data/${1}_B I have a lot of different files, some of which I want to copy to ${NAME_NODE}/user/evkuzmin/output. For that I try to pass paths from copy_files.sh which holds an array of paths to the files I need.

  <action name="start_fair_usage">
    <shell xmlns="uri:oozie:shell-action:0.1">
      <job-tracker>${JOB_TRACKER}</job-tracker>
      <name-node>${NAME_NODE}</name-node>
      <exec>${copy_file}</exec>      
      <argument>${today_without_dash}</argument>
      <argument>${mta}</argument>
      <!-- <file>${path}#${start_fair_usage}</file> -->
      <file>${path}${copy_file}#${copy_file}</file>
      <capture-output/>
    </shell>
    <ok to="test_copy"/>
    <error to="KILL"/>
  </action>

  <action name="test_copy">
    <distcp xmlns="uri:oozie:distcp-action:0.2">
      <job-tracker>${JOB_TRACKER}</job-tracker>
      <name-node>${NAME_NODE}</name-node>
      <arg>${wf:actionData('start_fair_usage')['paths']}</arg>
      <!-- <arg>${NAME_NODE}/user/evkuzmin/input/*</arg> -->
      <arg>${NAME_NODE}/user/evkuzmin/output</arg>
    </distcp>
    <ok to="END"/>
    <error to="KILL"/>
  </action>

start_fair_usage starts copy_file.sh

echo ${1} 
echo ${2}

dirs=(
    /user/comverse/data/${1}_B
    )
args=()

for i in $(hadoop fs -ls "${dirs[@]}" | egrep ${2}.gz | awk -F " " '{print $8}')
do
    args+=("$i")
    echo "copy file - "${i}
done

paths=${args}
echo ${paths}

原文:https://stackoverflow.com/questions/43257926
更新时间:2024-04-24 16:04

最满意答案

@AutoWired
private CachingConnectionFactory connectionFactory;

调用connectionFactory.createConnection().close()来验证代理是否已启动。 如果不是,你会发现一个异常。

一般来说,这不会打开一个新的连接,它只会检查共享(或缓存)的连接是否可用。


@AutoWired
private CachingConnectionFactory connectionFactory;

Call connectionFactory.createConnection().close() to verify that the broker is up. If it's not you'll catch an exception.

In general, this won't open a new connection, it will just check that the shared (or a cached) connection is available.

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