NPE when undeploying app with JPA and StdDateFormat

[ikeyat]

Description

When undeploying application that is using both JPA and Jackson libraries, a following exception is thrown.

Destroy method on bean with name 'com.fasterxml.jackson.databind.util.StdDateFormat#ec5c69d' threw 
java.lang.NullPointerException: null
    at java.text.DateFormat.hashCode(DateFormat.java:739) ~[na:1.8.0_45]
    at java.util.concurrent.ConcurrentHashMap.replaceNode(ConcurrentHashMap.java:1106) ~[na:1.8.0_45]
    at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1097) ~[na:1.8.0_45]
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessBeforeDestruction(PersistenceAnnotationBeanPostProcessor.java:374) 
...

The cause seems to be a bug of StdDateFormat in Jackson.
FasterXML/jackson-databind#1130

In TERASOLUNA Framework, when implementing REST service we usually creat StdDateFormat as a bean as seen here.
https://terasolunaorg.github.io/guideline/5.0.1.RELEASE/ja/ArchitectureInDetail/REST.html#restful-web-servicespring-mvc

Possible Solutions

Import improved Jackson.

Affects Version/s

• 5.1.0
• 5.0.2
• 1.0.4

Fix Version/s

• 5.3.0

Issue Links

[kazuki43zoo]

This issue will fix at Jackson 2.7.2.

[ikeyat]

The version of jackson cannot be imported to 5.2.x line.
This exception is not so critical and the condition is rare so we postpone to 5.3.0+ release.

[yoshikawaa]

@sasakitsy
Spring IO Platform Athenes applyed. Jackson version is 2.8.4.

[kazuki43zoo]

@sasakitsy Please assign a verifier for this fix.

[kazuki43zoo]

@sasakitsy

Please assign a verifier for this fix.

[bttakehirah]

Confirmed the error, and the problem was solved.