Tomcat crashed on us today, here is an excerpt from the crash log: Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) J 19003 org.apache.tomcat.jni.Socket.sendb(JLjava/nio/ByteBuffer;II)I (0 bytes) @ 0x000000000599a2df [0x000000000599a280+0x5f] J 42307 C2 org.apache.tomcat.util.net.SocketWrapperBase.flushBlocking()V (90 bytes) @ 0x0000000002663b84 [0x00000000026632e0+0x8a4] J 38363 C2 org.apache.tomcat.util.net.SocketWrapperBase.flush(Z)Z (20 bytes) @ 0x00000000046e5a18 [0x00000000046e59e0+0x38] j org.apache.coyote.http2.Http2UpgradeHandler.sendStreamReset(Lorg/apache/coyote/http2/StreamException;)V+128 j org.apache.coyote.http2.Stream.close(Lorg/apache/coyote/http2/Http2Exception;)V+76 J 43733 C2 org.apache.coyote.http2.StreamRunnable.run()V (12 bytes) @ 0x000000000af4d104 [0x000000000af4c720+0x9e4] J 36891 C1 java.util.concurrent.ThreadPoolExecutor.runWorker(Ljava/util/concurrent/ThreadPoolExecutor$Worker;)V (225 bytes) @ 0x0000000009a7797c [0x0000000009a76940+0x103c] J 41848 C1 java.util.concurrent.ThreadPoolExecutor$Worker.run()V (9 bytes) @ 0x0000000003ff180c [0x0000000003ff1700+0x10c] J 41853 C1 org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run()V (25 bytes) @ 0x0000000007e8194c [0x0000000007e81840+0x10c] J 30379 C1 java.lang.Thread.run()V (17 bytes) @ 0x000000000170dac4 [0x000000000170d980+0x144] v ~StubRoutines::call_stub
In my web application log I found this at the same time: org.apache.coyote.CloseNowException: Connection [389], Stream [67], This stream is not writable at org.apache.coyote.http2.Http2UpgradeHandler.reserveWindowSize(Http2UpgradeHandler.java:755) at org.apache.coyote.http2.Stream$StreamOutputBuffer.flush(Stream.java:721) at org.apache.coyote.http2.Stream$StreamOutputBuffer.doWrite(Stream.java:682) at org.apache.coyote.Response.doWrite(Response.java:522) at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:351) There were more for additional streams at this same time. I've seen quite a few of these CloseNowExceptions since upgrading to 8.5.14 from 8.5.11, but this is the first time it has crashed Tomcat. What could be the cause? What should I be looking for? - Matt
