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From "Doris Gu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11753) Make Some Enhancements about JournalNode Daemon
Date Fri, 12 May 2017 03:34:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doris Gu updated HDFS-11753:
----------------------------
    Description: 
Add exception catch and termination. If I start journalnode multiple times, I get multiple
journalnode daemons that don't work for I config the same port.
{quote}[hdfs@localhost ~]$ jps
*10107 JournalNode*
*46023 JournalNode*
57944 NameNode
46539 Jps
57651 DFSZKFailoverController
57909 DataNode
*57739 JournalNode*
*45721 JournalNode*{quote}

  was:
1.Add support -h. Right now, if I use *hdfs journalnode -h* , I straightly start journalnode
daemon. But generally speakingļ¼Œ I just want to look at the usage.

2.Add exception catch and termination. If I start journalnode with different directions stored
pids, I get servel journalnode daemons that don't work for I config the same port.
{quote}[hdfs@localhost ~]$ jps
*10107 JournalNode*
*46023 JournalNode*
57944 NameNode
46539 Jps
57651 DFSZKFailoverController
57909 DataNode
*57739 JournalNode*
*45721 JournalNode*{quote}


> Make Some Enhancements about JournalNode Daemon 
> ------------------------------------------------
>
>                 Key: HDFS-11753
>                 URL: https://issues.apache.org/jira/browse/HDFS-11753
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: journal-node
>    Affects Versions: 3.0.0-alpha2, 2.8.1, 2.8.2
>            Reporter: Doris Gu
>         Attachments: HDFS-11753.001.patch
>
>
> Add exception catch and termination. If I start journalnode multiple times, I get multiple
journalnode daemons that don't work for I config the same port.
> {quote}[hdfs@localhost ~]$ jps
> *10107 JournalNode*
> *46023 JournalNode*
> 57944 NameNode
> 46539 Jps
> 57651 DFSZKFailoverController
> 57909 DataNode
> *57739 JournalNode*
> *45721 JournalNode*{quote}



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