eBugs in Cloud Systems created HDFS-14472:
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Summary: FSImageHandler.getPath() throws a FileNotFoundException
when the path is malformed
Key: HDFS-14472
URL: https://issues.apache.org/jira/browse/HDFS-14472
Project: Hadoop HDFS
Issue Type: Bug
Reporter: eBugs in Cloud Systems
Dear HDFS 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 seem to indicate different error conditions.
Since we are not very familiar with HDFS's internal work flow, could you please
help us verify if this is a bug, i.e., will the callers have trouble handling
the exception, and will the users/admins have trouble diagnosing the failure?
Version: Hadoop-3.1.2
File:
HADOOP-ROOT/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/FSImageHandler.java
Line: 179-180
{code:java}
throw new FileNotFoundException("Path: " + path + " should " +
"start with " + WEBHDFS_PREFIX);{code}
Reason: A {{FileNotFoundException}} means that a target file cannot be found.
However, the error message indicates that the path is malformed (instead of
well-formed but pointing to no file). Will this mismatch be a problem? For
example, will the callers try to handle other {{FileNotFoundException}}
accidentally (and incorrectly) handle the malformed path?
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