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Posted to dev@uima.apache.org by "Jerry Cwiklik (JIRA)" <de...@uima.apache.org> on 2016/09/23 15:26:20 UTC
[jira] [Updated] (UIMA-5119) UIMA-AS: CPP wrapper fails with
Exception on service shutdown
[ https://issues.apache.org/jira/browse/UIMA-5119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jerry Cwiklik updated UIMA-5119:
--------------------------------
Description:
The UimacppServiceManagement code fails when remote C++ service terminates. The java code logs the following stack trace:
> UimacppServiceManagement service reports shutdown DONE
> UimacppShutdownHook sending quiesce message
> java.net.SocketException: Socket is closed
> at java.net.Socket.getInputStream(Socket.java:903)
> at
> org.apache.uima.aae.controller.UimacppServiceManagement.
> quiesceAndStop(Uima
> cppServiceManagement.java:88)
> at
> org.apache.uima.aae.controller.UimacppServiceManagement.
> quiesceAndShutdown(
> UimacppServiceManagement.java:397)
> at
> org.apache.uima.aae.controller.UimacppShutdownHook.run(
> UimacppServiceController.java:1105)
The UimacppServiceManagement is a communication wrapper which is used by UimacppServiceController to interact with a remote C++ process. It sends text commands to the remote using a Socket.
In quiesceAndStop() the code sends "QUIESCEANDSTOP" command and a remote process exits immediately. After sending the command, the UimacppServiceManagement tries to read from a socket that was closed causing the exception.
Modify code to catch SocketException and log a short message instead of dumping stack trace and returning an exception. Process terminating quickly should not be considered an error.
was:
The UimacppServiceManagement code fails when remote C++ service terminates with the following stack trace:
> UimacppServiceManagement service reports shutdown DONE
> UimacppShutdownHook sending quiesce message
> java.net.SocketException: Socket is closed
> at java.net.Socket.getInputStream(Socket.java:903)
> at
> org.apache.uima.aae.controller.UimacppServiceManagement.
> quiesceAndStop(Uima
> cppServiceManagement.java:88)
> at
> org.apache.uima.aae.controller.UimacppServiceManagement.
> quiesceAndShutdown(
> UimacppServiceManagement.java:397)
> at
> org.apache.uima.aae.controller.UimacppShutdownHook.run(
> UimacppServiceController.java:1105)
The UimacppServiceManagement is a communication wrapper which is used by UimacppServiceController to interact with a remote C++ process. It sends text commands to the remote using a Socket.
In quiesceAndStop() the code sends "QUIESCEANDSTOP" command and a remote process exits immediately. After sending the command, the UimacppServiceManagement tries to read from a socket that was closed causing the exception.
Modify code to catch SocketException and log a short message instead of dumping stack trace and returning an exception. Process terminating quickly should not be considered an error.
> UIMA-AS: CPP wrapper fails with Exception on service shutdown
> -------------------------------------------------------------
>
> Key: UIMA-5119
> URL: https://issues.apache.org/jira/browse/UIMA-5119
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.9.0AS
>
>
> The UimacppServiceManagement code fails when remote C++ service terminates. The java code logs the following stack trace:
> > UimacppServiceManagement service reports shutdown DONE
> > UimacppShutdownHook sending quiesce message
> > java.net.SocketException: Socket is closed
> > at java.net.Socket.getInputStream(Socket.java:903)
> > at
> > org.apache.uima.aae.controller.UimacppServiceManagement.
> > quiesceAndStop(Uima
> > cppServiceManagement.java:88)
> > at
> > org.apache.uima.aae.controller.UimacppServiceManagement.
> > quiesceAndShutdown(
> > UimacppServiceManagement.java:397)
> > at
> > org.apache.uima.aae.controller.UimacppShutdownHook.run(
> > UimacppServiceController.java:1105)
> The UimacppServiceManagement is a communication wrapper which is used by UimacppServiceController to interact with a remote C++ process. It sends text commands to the remote using a Socket.
> In quiesceAndStop() the code sends "QUIESCEANDSTOP" command and a remote process exits immediately. After sending the command, the UimacppServiceManagement tries to read from a socket that was closed causing the exception.
> Modify code to catch SocketException and log a short message instead of dumping stack trace and returning an exception. Process terminating quickly should not be considered an error.
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