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https://issues.apache.org/jira/browse/LUCENE-2707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12992924#comment-12992924
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Katrin E. commented on LUCENE-2707:
-----------------------------------
This bug affects Hibernate Search as well:
http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-681
> NumericField throws a NotSerializableException when it is serialized, even
> though it implements Serializable
> ------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-2707
> URL: https://issues.apache.org/jira/browse/LUCENE-2707
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.9.3, 3.0.2
> Reporter: Marc Tinkler
>
> NumericField extends from AbstractField, which implements Serializable.
>
> NumericField cannot be serialized because it stores the precisionStep in the
> underlying NumericTokenStream, which is not serializable. The
> NumericTokenStream should either be made serializable, or made transient in
> NumericField, and the precisionStep should be stored directly in
> NumericField, and recreated on deserialization.
> Not entirely related, but the real reason I found this bug was because Field
> and NumericField are not cloneable and there is no way to make a copy
> manually, since there is no getter method for precisionStep on NumericField,
> so I thought I was going to be clever and do a "poor man's clone" by
> serializing/deserializing a NumericField. No such luck.
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