[jira] [Updated] (HADOOP-11296) hadoop-daemons.sh throws 'host1: bash: host3: command not found...'

["Vinayakumar B (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-11296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinayakumar B updated HADOOP-11296:
-----------------------------------
    Attachment: HADOOP-11296-001.patch

Issue was 'xargs' will consider full line of input as one argument when it reads from stdin/pipe.
in {{hadoop-functions.sh#hadoop_connect_to_hosts}} {{SLAVE_NAMES}} was space separated hostnames in one line. So it was considering whole list as one host. 
Here is the code snippet.
{code}    echo "${SLAVE_NAMES}" | \
    xargs -n 1 -P"${HADOOP_SSH_PARALLEL}" \
    -I {} bash -c --  "hadoop_actual_ssh {} ${params}"{code}

> hadoop-daemons.sh throws 'host1: bash: host3: command not found...'
> -------------------------------------------------------------------
>
>                 Key: HADOOP-11296
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11296
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 2.5.1
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>            Priority: Critical
>         Attachments: HADOOP-11296-001.patch
>
>
> *hadoop-daemons.sh* throws command not found.
> {noformat}[vinay@host2 install]$ /home/vinay/install/hadoop/sbin/hadoop-[vinay@host2 install]$ /home/vinay/install/hadoop/sbin/hadoop-daemons.sh --config /home/vinay/install/conf --hostnames 'host1 host2' start namenode
> host1: bash: host2: command not found...
> {noformat}
> *hadoop-daemons.sh* is mainly used to start the cluster, for ex: start-dfs.sh
> Without this cluster will not be able to start.



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