com.eclipsesource.json.Json.parse(String strInput) get stuck in Infinite Loop

Hi, I have observed a behavior that com.eclipsesource.json.Json.parse(String strInput) gets stuck in an infinite loop. Usually it happens at app-server (wildfly-10.1.0.Final) startup hence it blocks my web-service. Once it is stuck it would keep getting stuck on further web-services calls unless i reboot my app-server. Sometimes rebooting the app-server doesn’t resolve this and re-trying a few times resolve this issue. Kindly help me with the issue. I would add details once i get concrete steps to reproduce it. I have witnessed this issue more than 30 times since i started using this jar (almost a month back).

Maven dependency which i am using:

<dependency>
  <groupId>com.eclipsesource.minimal-json</groupId>
  <artifactId>minimal-json</artifactId>
  <version>0.9.4</version>
</dependency>

[ralfstx]

@sbernard31 Thanks for the thread dump, that’s helpful. As far as I can see, the minimal-json classes Json and JsonValue are loaded concurrently by two different threads, both of which holding a lock (<clinit> is the static initialization of a class and its static fields).

• pool-1-thread-10 at com.eclipsesource.json.Json.<clinit> (Json.java:63)
• pool-1-thread-9 at com.eclipsesource.json.JsonValue.<clinit> (JsonValue.java:71)

Since the initialization of JsonValue.TRUE depends on the initialization of Json.TRUE, this seems to lead to some kind of deadlock situation.

If this is true, the static fields in JsonValue, which are only meant for compatibility are causing trouble and should be removed. Since this is a breaking change, it would require a 1.0.0.

[ralfstx]

@sbernard31 I’d prefer to open a new bug. Thanks!