[jira] [Assigned] (CHUKWA-654) HICC session hosts bug

["Eric Yang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CHUKWA-654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Yang reassigned CHUKWA-654:
--------------------------------

    Assignee: Saisai Shao
    
> HICC session hosts bug
> ----------------------
>
>                 Key: CHUKWA-654
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-654
>             Project: Chukwa
>          Issue Type: Bug
>          Components: User Interface
>    Affects Versions: 0.6.0
>         Environment: RHEL5 Hadoop 1.0.3 Hbase0.94.0
>            Reporter: Saisai Shao
>            Assignee: Saisai Shao
>             Fix For: 0.6.0
>
>         Attachments: CHUKWA-654.patch
>
>
> when using Host Selector widget to select one host, like "localhost", in workspace.js code save_host() function
>    for(var i=0;i< obj.options.length;i++) {
>         if(obj.options[i].selected) {
>             if(i!=0) {
>                 cookie = cookie + "," + obj.options[i].value;
>             } else {
>                 cookie = obj.options[i].value;
>             }
>         }
>     }
>     var myAjax=new Ajax.Request(
>         "/hicc/jsp/session.jsp",
>         {
>             asynchronous: false,
>             method: 'post',
>             parameters: "hosts="+cookie
>         }
>     );
> this code will rise a ajax request to set hosts in session, but the hosts variable in session will be set like ",localhost", a additional comma will be added even there is only one host selected. I think this bug is introduced by above code.
> And this will cause MetricsController.java getSeriesBySessionAttribute() function
>    String[] rkeys = (session.getAttribute(skey).toString()).split(",");
> to split this hosts variable to a zero length string, like string "" and  string "localhost", using this string "" to get data in HBase which will retrieve no data.

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