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Posted to commits@servicecomb.apache.org by GitBox <gi...@apache.org> on 2021/10/12 06:03:49 UTC
[GitHub] [servicecomb-java-chassis] five111 opened a new issue #2606: 接口抛出异常408，原因是线程处于中断状态
five111 opened a new issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606
接口调用时异常日志如下：
```
org.apache.servicecomb.swagger.invocation.exception.InvocationException: InvocationException: code=408;msg=CommonExceptionData{code='SCB.00000004', message='Invocation Timeout.', dynamic={}}
at org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor.guardedWait(SyncResponseExecutor.java:85) ~[java-chassis-core-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor.waitResponse(SyncResponseExecutor.java:54) ~[java-chassis-core-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at org.apache.servicecomb.core.provider.consumer.InvokerUtils.innerSyncInvoke(InvokerUtils.java:160) [java-chassis-core-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at org.apache.servicecomb.provider.pojo.HandlerInvocationCaller.syncInvoke(HandlerInvocationCaller.java:40) [provider-pojo-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at org.apache.servicecomb.provider.pojo.HandlerInvocationCaller.call(HandlerInvocationCaller.java:34) [provider-pojo-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at org.apache.servicecomb.provider.pojo.Invoker.invoke(Invoker.java:71) [provider-pojo-2.1.5-h0.gts.dsp.r17.jar:2.1.5-h0.gts.dsp.r17]
at com.sun.proxy.$Proxy343.queryTaskResult(Unknown Source) [?:?]
at com.huawei.mateinfo.io.thread.install.rpc.taskquery.ItemInstallTaskQueryRunnable.getResult(ItemInstallTaskQueryRunnable.java:68) [mateinfo-app-mgt-io-1.0.0.jar:?]
at com.huawei.mateinfo.io.thread.install.rpc.taskquery.BaseItemTaskQueryRunnable.execute(BaseItemTaskQueryRunnable.java:69) [mateinfo-app-mgt-io-1.0.0.jar:?]
at com.huawei.mateinfo.io.thread.install.rpc.taskquery.BaseItemTaskQueryRunnable.run(BaseItemTaskQueryRunnable.java:45) [mateinfo-app-mgt-io-1.0.0.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_292]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_292]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_292]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_292]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_292]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_292]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292]
```
跟踪源码发现异常来源于此方法
```
private void guardedWait(Invocation invocation) throws InvocationException {
long wait = getWaitTime(invocation);
try {
if (wait <= 0) {
latch.await();
return;
}
if (latch.await(wait, TimeUnit.MILLISECONDS)) {
return;
}
} catch (InterruptedException e) {
//ignore
}
throw new InvocationException(REQUEST_TIMEOUT, ExceptionCodes.INVOCATION_TIMEOUT, "Invocation Timeout.");
}
```
latch.wait时，线程处于中断状态，导致抛出异常，请问这种问题该如何排查
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[GitHub] [servicecomb-java-chassis] five111 commented on issue #2606: 接口抛出异常408，原因是线程处于中断状态
Posted by GitBox <gi...@apache.org>.
five111 commented on issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606#issuecomment-940707549
已找到原因
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[GitHub] [servicecomb-java-chassis] five111 edited a comment on issue #2606: 接口抛出异常408，原因是线程处于中断状态
Posted by GitBox <gi...@apache.org>.
five111 edited a comment on issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606#issuecomment-940707549
已找到原因 自身业务代码原因
问题其实很低级
业务代码里有个异步的方法，为这个异步的方法设置了个超时时间，超过这个超时时间就会主动中断任务。这个时间在某次合入之后被修改的特别小，就出现了上文的问题。
InterruptedException 其实是非常罕见的，遇到这个问题可以主动考虑是否是主动设置的状态。
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[GitHub] [servicecomb-java-chassis] five111 edited a comment on issue #2606: 接口抛出异常408，原因是线程处于中断状态
Posted by GitBox <gi...@apache.org>.
five111 edited a comment on issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606#issuecomment-940707549
已找到原因 自身业务代码原因
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[GitHub] [servicecomb-java-chassis] five111 closed issue #2606: 接口抛出异常408，原因是线程处于中断状态
Posted by GitBox <gi...@apache.org>.
five111 closed issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606
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[GitHub] [servicecomb-java-chassis] five111 edited a comment on issue #2606: 接口抛出异常408，原因是线程处于中断状态
Posted by GitBox <gi...@apache.org>.
five111 edited a comment on issue #2606:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2606#issuecomment-940707549
已找到原因 自身业务代码原因
问题其实很低级
业务代码里有个异步的方法，为这个异步的方法设置了个超时时间，超过这个超时时间就会主动中断任务。这个时间在某次合入之后被修改的特别小，就出现了上文的问题。
### 总结一点
InterruptedException 其实是非常罕见的，遇到这个问题可以优先考虑是否是主动设置的状态。
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