执行-R命令时sandbox.log会有异常抛出

[dongchenxu]

虽然不影响功能，但毕竟不优雅，需要再下次发布时解决

2017-12-19 17:39:54 WARN  http request value=/module-mgr/reset invoke module[id=module-mgr;] class com.albaba.jvm.sandbox.module.mgr.ModuleMgrModule#reset failed.
org.eclipse.jetty.io.UncheckedIOException: java.io.IOException: Closed
	at org.eclipse.jetty.io.UncheckedPrintWriter.setError(UncheckedPrintWriter.java:110)
	at org.eclipse.jetty.io.UncheckedPrintWriter.write(UncheckedPrintWriter.java:283)
	at org.eclipse.jetty.io.UncheckedPrintWriter.write(UncheckedPrintWriter.java:298)
	at org.eclipse.jetty.io.UncheckedPrintWriter.print(UncheckedPrintWriter.java:463)
	at org.eclipse.jetty.io.UncheckedPrintWriter.println(UncheckedPrintWriter.java:645)
	at com.albaba.jvm.sandbox.module.mgr.ModuleMgrModule.output(ModuleMgrModule.java:64)
	at com.albaba.jvm.sandbox.module.mgr.ModuleMgrModule.reset(ModuleMgrModule.java:119)
	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 com.alibaba.jvm.sandbox.core.server.jetty.servlet.ModuleHttpServlet.doMethod(ModuleHttpServlet.java:119)
	at com.alibaba.jvm.sandbox.core.server.jetty.servlet.ModuleHttpServlet.doGet(ModuleHttpServlet.java:44)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:558)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:488)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
	at org.eclipse.jetty.server.Server.handle(Server.java:350)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:924)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)
	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Closed
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:152)
	at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:101)
	at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:167)
	at org.eclipse.jetty.server.HttpWriter.write(HttpWriter.java:283)
	at org.eclipse.jetty.server.HttpWriter.write(HttpWriter.java:107)
	at org.eclipse.jetty.io.UncheckedPrintWriter.write(UncheckedPrintWriter.java:274)
	... 31 common frames omitted