eBugs in Cloud Systems created HDFS-14473:
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Summary: BlockReceiver.receiveBlock() throws an IOException when
interrupted
Key: HDFS-14473
URL: https://issues.apache.org/jira/browse/HDFS-14473
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/server/datanode/BlockReceiver.java
Line: 1070
{code:java}
throw new IOException("Interrupted receiveBlock");{code}
Reason: An {{IOException}} can mean many different errors, while the error
message indicates that {{receiveBlock()}} is interrupted. Will this mismatch be
a problem? For example, will the callers try to handle other {{IOException}}
accidentally (and incorrectly) handle the interrupt? Maybe an
{{InterruptedIOException}} will be better?
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