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https://issues.apache.org/jira/browse/CASSANDRA-15116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16835717#comment-16835717
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Jon Meredith commented on CASSANDRA-15116:
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Thanks for filing the bug report. I'll be investigating over the next few days.
> CommitLogArchiver.construct() throws a RuntimeException when it failed to
> create a directory
> --------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15116
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15116
> Project: Cassandra
> Issue Type: Bug
> Reporter: eBugs
> Assignee: Jon Meredith
> Priority: Normal
>
> Dear Cassandra 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: Cassandra-3.11 (commit: 123113f7b887370a248669ee0db6fdf13df0146e)
> File:
> CASSANDRA-ROOT/src/java/org/apache/cassandra/db/commitlog/CommitLogArchiver.java
> Line: 110
> {code:java}
> throw new RuntimeException("Unable to create directory: " + dir);{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 {{construct()}} failed to create a directory. This
> mismatch could be a problem. For example, the callers may miss the
> possibility that {{construct()}} can fail to create a directory because it
> does not throw any {{IOException}}. Or, the callers trying to handle other
> {{RuntimeException}} may accidentally (and incorrectly) handle the directory
> creation failure.
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