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From "Ari Rabkin (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (HADOOP-5087) Regex for Cmd parsing contains an error
Date Mon, 02 Mar 2009 21:26:58 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ari Rabkin reopened HADOOP-5087:
--------------------------------

      Assignee: Ari Rabkin  (was: Jerome Boulon)

FTA doesn't parse its argument correctly.

> Regex for Cmd parsing contains an error
> ---------------------------------------
>
>                 Key: HADOOP-5087
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5087
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/chukwa
>         Environment: HADOOP-4947 use regex to parse chukwa commands but there's an error
in the regex
> the current regex is:
> Pattern addCmdPattern = Pattern.compile("[aA][dD][dD]\\s+(\\S+)\\s+(\\S+)\\s+(.*\\S)?\\s*(\\d+)\\s*");
> does not correctly parsed this valid checkpoint entry:
> "ADD org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8NewLineEscaped
Syslog 0 /var/log/messages 114027"
> Parsing result:
> adaptorName org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8NewLineEscaped
> dataType Syslog
> params 0 /var/log/messages 11402
> offset 7
> Instead of:
> adaptorName org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8NewLineEscaped
> dataType Syslog
> params 0 /var/log/messages 
> offset 114027
> The correct regex is: "[aA][dD][dD]\\s+(\\S+)\\s+(\\S+)\\s+(.*\\s)?\\s*(\\d+)\\s*"
> Example of parsing: "ADD org.apache.hadoop.chukwa.datacollection.adaptor.MySpecificAdaptor
Syslog 0 my param1 param2 /var/log/messages 114027";
> Parsing result:
> adaptorName org.apache.hadoop.chukwa.datacollection.adaptor.MySpecificAdaptor
> dataType Syslog
> params 0 my param1 param2 /var/log/messages 
> offset 114027
>            Reporter: Jerome Boulon
>            Assignee: Ari Rabkin
>         Attachments: fixedregex.patch, HADOOP-5087-2.patch, HADOOP-5087.patch, reluctantregex.patch
>
>


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