You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "eBugs (JIRA)" <ji...@apache.org> on 2019/05/06 16:01:00 UTC
[jira] [Updated] (HADOOP-16296) MiniKdc() throws a RuntimeException
when it fails to create its workDir
[ https://issues.apache.org/jira/browse/HADOOP-16296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
eBugs updated HADOOP-16296:
---------------------------
Description:
Dear Hadoop developers, we are developing a tool to detect exception-related bugs in Java. Our prototype has spotted the following {{throw}} statement whose exception class and error message indicate different error conditions.
Version: Hadoop-3.1.2
File: HADOOP-ROOT/hadoop-common-project/hadoop-minikdc/src/main/java/org/apache/hadoop/minikdc/MiniKdc.java
Line: 223
{code:java}
throw new RuntimeException("Cannot create directory " + this.workDir);{code}
{{RuntimeException}} is usually used to represent errors in the program logic (think of one of its subclasses, {{NullPointerException}}), while the error message indicates that {{MiniKdc()}} can't create the directory {{workDir}}. This mismatch could be a problem. For example, the callers may miss the case where {{MiniKdc()}} fails to create the directory. Or, the callers trying to handle other {{RuntimeException}} may accidentally (and incorrectly) handle the directory creation failure. Maybe throwing an {{IOException}} is better here.
was:
Dear Hadoop developers, we are developing a tool to detect exception-related bugs in Java. Our prototype has spotted the following {{throw}} statement whose exception class and error message indicate different error conditions.
Version: Hadoop-3.1.2
File: HADOOP-ROOT/hadoop-common-project/hadoop-minikdc/src/main/java/org/apache/hadoop/minikdc/MiniKdc.java
Line: 223
{code:java}
throw new RuntimeException("Allocation file " + url
+ " found on the classpath is not on the local filesystem.");{code}
{{RuntimeException}} is usually used to represent errors in the program logic (think of one of its subclasses, {{NullPointerException}}), while the error message indicates that {{MiniKdc()}} can't create the directory {{workDir}}. This mismatch could be a problem. For example, the callers may miss the case where {{MiniKdc()}} fails to create the directory. Or, the callers trying to handle other {{RuntimeException}} may accidentally (and incorrectly) handle the directory creation failure. Maybe throwing an {{IOException}} is better here.
> MiniKdc() throws a RuntimeException when it fails to create its workDir
> -----------------------------------------------------------------------
>
> Key: HADOOP-16296
> URL: https://issues.apache.org/jira/browse/HADOOP-16296
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: eBugs
> Priority: Minor
>
> Dear Hadoop developers, we are developing a tool to detect exception-related bugs in Java. Our prototype has spotted the following {{throw}} statement whose exception class and error message indicate different error conditions.
>
> Version: Hadoop-3.1.2
> File: HADOOP-ROOT/hadoop-common-project/hadoop-minikdc/src/main/java/org/apache/hadoop/minikdc/MiniKdc.java
> Line: 223
> {code:java}
> throw new RuntimeException("Cannot create directory " + this.workDir);{code}
>
> {{RuntimeException}} is usually used to represent errors in the program logic (think of one of its subclasses, {{NullPointerException}}), while the error message indicates that {{MiniKdc()}} can't create the directory {{workDir}}. This mismatch could be a problem. For example, the callers may miss the case where {{MiniKdc()}} fails to create the directory. Or, the callers trying to handle other {{RuntimeException}} may accidentally (and incorrectly) handle the directory creation failure. Maybe throwing an {{IOException}} is better here.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org