Kwafoor commented on PR #5800:
URL: https://github.com/apache/kyuubi/pull/5800#issuecomment-1837757189
Is there somthing wrong with this unit tests? Is it necessary to open a new
issue to fix?(seems to happen frequently.)
```
EngineRefWithEtcdSuite:
- CONNECTION shared level engine name
- USER shared level engine name
- GROUP shared level engine name
- SERVER shared level engine name
- check the engine space of engine pool
- start and get engine address with lock
Exception in thread "pool-197-thread-1" java.lang.NullPointerException
at
org.apache.kyuubi.engine.EngineRef.$anonfun$create$1(EngineRef.scala:237)
at
org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.tryWithLock(EtcdDiscoveryClient.scala:187)
at org.apache.kyuubi.engine.EngineRef.tryWithLock(EngineRef.scala:174)
at org.apache.kyuubi.engine.EngineRef.create(EngineRef.scala:179)
at
org.apache.kyuubi.engine.EngineRef.$anonfun$getOrCreate$1(EngineRef.scala:306)
at scala.Option.getOrElse(Option.scala:189)
at org.apache.kyuubi.engine.EngineRef.getOrCreate(EngineRef.scala:306)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$17(EngineRefTests.scala:298)
at
org.apache.kyuubi.ha.client.DiscoveryClientProvider$.withDiscoveryClient(DiscoveryClientProvider.scala:36)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$16(EngineRefTests.scala:291)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
Error: Exception in thread "pool-197-thread-2" java.lang.Error:
org.apache.kyuubi.KyuubiSQLException: Timeout to lock on path
[/engine_test2_1.9.0-SNAPSHOT_USER_SPARK_SQL_lock/runner/default] after 4500
ms. There would be some problem that other session may create engine timeout.
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1155)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
Caused by: org.apache.kyuubi.KyuubiSQLException: Timeout to lock on path
[/engine_test2_1.9.0-SNAPSHOT_USER_SPARK_SQL_lock/runner/default] after 4500
ms. There would be some problem that other session may create engine timeout.
at
org.apache.kyuubi.KyuubiSQLException$.apply(KyuubiSQLException.scala:70)
at
org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.tryWithLock(EtcdDiscoveryClient.scala:181)
at org.apache.kyuubi.engine.EngineRef.tryWithLock(EngineRef.scala:174)
at org.apache.kyuubi.engine.EngineRef.create(EngineRef.scala:179)
at
org.apache.kyuubi.engine.EngineRef.$anonfun$getOrCreate$1(EngineRef.scala:306)
at scala.Option.getOrElse(Option.scala:189)
at org.apache.kyuubi.engine.EngineRef.getOrCreate(EngineRef.scala:306)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$17(EngineRefTests.scala:298)
at
org.apache.kyuubi.ha.client.DiscoveryClientProvider$.withDiscoveryClient(DiscoveryClientProvider.scala:36)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$16(EngineRefTests.scala:291)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
... 2 more
Exception in thread "pool-197-thread-3" java.lang.NullPointerException
at
org.apache.kyuubi.engine.EngineRef.$anonfun$create$1(EngineRef.scala:237)
at
org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.tryWithLock(EtcdDiscoveryClient.scala:187)
at org.apache.kyuubi.engine.EngineRef.tryWithLock(EngineRef.scala:174)
at org.apache.kyuubi.engine.EngineRef.create(EngineRef.scala:179)
at
org.apache.kyuubi.engine.EngineRef.$anonfun$getOrCreate$1(EngineRef.scala:306)
at scala.Option.getOrElse(Option.scala:189)
at org.apache.kyuubi.engine.EngineRef.getOrCreate(EngineRef.scala:306)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$17(EngineRefTests.scala:298)
at
org.apache.kyuubi.ha.client.DiscoveryClientProvider$.withDiscoveryClient(DiscoveryClientProvider.scala:36)
at
org.apache.kyuubi.engine.EngineRefTests.$anonfun$$init$$16(EngineRefTests.scala:291)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
```
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