You are viewing a plain text version of this content. The canonical link for it is here.
Posted to mapreduce-issues@hadoop.apache.org by "Daniel Templeton (JIRA)" <ji...@apache.org> on 2015/11/04 23:30:27 UTC
[jira] [Created] (MAPREDUCE-6535) TaskID default constructor
results in NPE on toString()
Daniel Templeton created MAPREDUCE-6535:
-------------------------------------------
Summary: TaskID default constructor results in NPE on toString()
Key: MAPREDUCE-6535
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6535
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Affects Versions: 2.6.0
Reporter: Daniel Templeton
Assignee: Daniel Templeton
This code will reproduce the issue:
{code}
new TaskAttemptID().toString();
{code}
The issue is that the default constructor leaves the type {{null}}. The {{get()}} in {{CharTaskTypesMaps.getRepresentingCharacter()}} then throws an NPE on the null type key.
The simplest solution would be to only call the {{get()}} on line 288 of {{TaskID.java}} if {{type}} is not {{null}} and return some other literal otherwise. Since no part of the code is tripping on the NPE, what we choose for the literal shouldn't matter. How about "x"?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)