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Posted to reviews@helix.apache.org by GitBox <gi...@apache.org> on 2021/01/03 05:25:21 UTC
[GitHub] [helix] pkuwm opened a new issue #1595: NPE from ZkAsyncCallbacks when rc is 255
pkuwm opened a new issue #1595:
URL: https://github.com/apache/helix/issues/1595
### Description
Because ZK's `KeeperException` Code does not define 255 in its map, the lookup for 255 gives null, and in `ZkAsyncCalbacks`, the code `switch (Code.get(rc))` will be `switch(null)` so NPE is thrown.
```
2637 [main] ERROR org.apache.helix.zookeeper.zkclient.callback.ZkAsyncCallbacks - Failed to handle unknown return code 255. Skip retrying.
java.lang.NullPointerException
at org.apache.helix.zookeeper.zkclient.callback.ZkAsyncCallbacks$DefaultCallback.needRetry(ZkAsyncCallbacks.java:257)
at org.apache.helix.zookeeper.zkclient.callback.ZkAsyncCallbacks$DefaultCallback.callback(ZkAsyncCallbacks.java:179)
at org.apache.helix.zookeeper.zkclient.callback.ZkAsyncCallbacks$CreateCallbackHandler.processResult(ZkAsyncCallbacks.java:104)
at org.apache.helix.zookeeper.zkclient.ZkClient.doAsyncCreate(ZkClient.java:1958)
at org.apache.helix.zookeeper.zkclient.ZkClient.asyncCreate(ZkClient.java:1937)
at org.apache.helix.zookeeper.impl.client.TestRawZkClient.testAsyncWriteByExpectedSession(TestRawZkClient.java:881)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:76)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:673)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:846)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1170)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.runWorkers(TestRunner.java:1147)
at org.testng.TestRunner.privateRun(TestRunner.java:749)
at org.testng.TestRunner.run(TestRunner.java:600)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:317)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:312)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:274)
at org.testng.SuiteRunner.run(SuiteRunner.java:223)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1039)
at org.testng.TestNG.runSuitesLocally(TestNG.java:964)
at org.testng.TestNG.run(TestNG.java:900)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:283)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:75)
at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:120)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
```
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[GitHub] [helix] pkuwm closed issue #1595: NPE from ZkAsyncCallbacks when rc is 255
Posted by GitBox <gi...@apache.org>.
pkuwm closed issue #1595:
URL: https://github.com/apache/helix/issues/1595
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[GitHub] [helix] pkuwm commented on issue #1595: NPE from ZkAsyncCallbacks when rc is 255
Posted by GitBox <gi...@apache.org>.
pkuwm commented on issue #1595:
URL: https://github.com/apache/helix/issues/1595#issuecomment-774310510
NPE is caught and stack trace is logged as error. So the log is seen. No need to fix
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