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Posted to dev@lucene.apache.org by "Oliver Bates (JIRA)" <ji...@apache.org> on 2017/01/09 19:25:58 UTC
[jira] [Created] (SOLR-9949) Non-serializable
AlreadyClosedException returned by MBeanServer
Oliver Bates created SOLR-9949:
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Summary: Non-serializable AlreadyClosedException returned by MBeanServer
Key: SOLR-9949
URL: https://issues.apache.org/jira/browse/SOLR-9949
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: JMX
Affects Versions: 4.8
Reporter: Oliver Bates
Priority: Minor
Fix For: 5.3.1
Solr JMX monitoring agent is throwing InvalidClassException when trying to deserialize AlreadyClosedException thrown by Solr during JMX stat fetching.
Stack trace:
org.apache.lucene.store.AlreadyClosedException; local class incompatible: stream classdesc serialVersionUID = 5608155941692732578, local class serialVersionUID = -1978883495828278874"
java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.io.InvalidClassException: org.apache.lucene.store.AlreadyClosedException; local class incompatible: stream classdesc serialVersionUID = 5608155941692732578, local class serialVersionUID = -1978883495828278874"
The serialVersionUID value computed by java at runtime changed when a new constructor was added with a 'cause' field.
AlreadyClosedExceptions can be thrown by the MBean server if a remote instance is trying to access stats on a recently deleted core for instance. In this case, the exception is serialized/deserialized by the MBean handler which can cause InvalidClassExceptions if the monitoring service is using a different version of lucene. Since Lucene doesn't want to implement Serializable, these exceptions should be propagated up to the MBeanServer.
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