Steven Schlansker created LUCENE-9967:
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Summary: ReplicaNode.start NPE on exception with no message
Key: LUCENE-9967
URL: https://issues.apache.org/jira/browse/LUCENE-9967
Project: Lucene - Core
Issue Type: Improvement
Components: modules/replicator
Affects Versions: 8.8.2
Environment: Java 16.0.1, Fedora Linux 33
Reporter: Steven Schlansker
Attachments: LUCENE-9967.patch
We are starting a new project and trying to implement Lucene near real time
replication.
While stubbing out some code such that it throws an exception, we found that
Lucene's error handling itself fails when the exception has no message:
{code:java}
} catch (Throwable t) {
if (t.getMessage().startsWith("replica cannot start") == false) {{code}
This obscures the actual root cause exception source (you cannot see it without
a debugger) and replaces it with a useless NPE.
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