Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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1.18.1
Description
This is a fun one!
ExecNodeMetadataUtil and JsonSerdeUtil have a circular dependency in their static initialization, which can cause a classloading lockup when 2 threads are running the class initialization of each class at the same time because during class initialization they hold a lock.
https://ternarysearch.blogspot.com/2013/07/static-initialization-deadlock.html
JsonSerdeUtils#createFlinkTableJacksonModule calls into the ExecNodeMetadataUtil, while ExecNodeMetadataUtil#addToLookupMap calls into the JsonSerdeUtils.
"ForkJoinPool-3-worker-11" #25 daemon prio=5 os_prio=0 cpu=219.87ms elapsed=995.99s tid=0x00007ff11c50e000 nid=0xf0fc in Object.wait() [0x00007ff12a4f3000] java.lang.Thread.State: RUNNABLE at o.a.f.t.p.plan.nodes.exec.serde.JsonSerdeUtil.createFlinkTableJacksonModule(JsonSerdeUtil.java:133) at o.a.f.t.p.plan.nodes.exec.serde.JsonSerdeUtil.<clinit>(JsonSerdeUtil.java:111) "ForkJoinPool-3-worker-7" #23 daemon prio=5 os_prio=0 cpu=54.83ms elapsed=996.00s tid=0x00007ff11c50c000 nid=0xf0fb in Object.wait() [0x00007ff12a5f4000] java.lang.Thread.State: RUNNABLE at o.a.f.t.p.plan.utils.ExecNodeMetadataUtil.addToLookupMap(ExecNodeMetadataUtil.java:235) at o.a.f.t.p.plan.utils.ExecNodeMetadataUtil.<clinit>(ExecNodeMetadataUtil.java:156)
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