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From "Michael Bieniosek (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2538) NPE in TaskLog.java
Date Thu, 10 Jan 2008 01:06:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Bieniosek updated HADOOP-2538:
--------------------------------------

    Attachment: hadoop-2538.patch

add a null check and warn user appropriately

> NPE in TaskLog.java
> -------------------
>
>                 Key: HADOOP-2538
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2538
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.15.0
>            Reporter: Michael Bieniosek
>         Attachments: hadoop-2538.patch
>
>
> In the tasktracker web ui, if I go to
> /tasklog?taskid=task_200801020752_0383_m_000000_0&all=true&plaintext=true
> which corresponds to a short log (<4k), I get a 500 in the web ui, and this NPE in
the tasktracker log:
> 2008-01-07 21:02:13,935 WARN /: /tasklog?taskid=task_200801020752_0383_m_000000_
> 0&all=true&plaintext=true: 
> java.lang.NullPointerException
>         at org.apache.hadoop.mapred.TaskLog.getTaskLogFile(TaskLog.java:48)
>         at org.apache.hadoop.mapred.TaskLog$Reader.<init>(TaskLog.java:124)
>         at org.apache.hadoop.mapred.TaskLogServlet.printTaskLog(TaskLogServlet.j
> ava:44)
>         at org.apache.hadoop.mapred.TaskLogServlet.doGet(TaskLogServlet.java:134
> )

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