Could not connect to compilation daemon after 300 attempts.

[scabug]

$ scala -version
Scala code runner version 2.10.2 -- Copyright 2002-2013, LAMP/EPFL

$ java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)

$ cat hello.scala
println("Hello, world!")

$ scala hello.scala # hangs, pressed Ctrl-
^\2013-08-21 23:48:24
Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode):

"Thread-5" daemon prio=10 tid=0x00007fbde0542800 nid=0x13c9 runnable [0x00007fbdd3abd000]
java.lang.Thread.State: RUNNABLE
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:242)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:273)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
- locked <0x00000000e1ab7080> (a java.lang.UNIXProcess$ProcessPipeInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at scala.sys.process.BasicIO$.loop$1(BasicIO.scala:225)
at scala.sys.process.BasicIO$.transferFullyImpl(BasicIO.scala:233)
at scala.sys.process.BasicIO$.transferFully(BasicIO.scala:214)
at scala.sys.process.BasicIO$$anonfun$toStdErr$1.apply(BasicIO.scala:203)
at scala.sys.process.BasicIO$$anonfun$toStdErr$1.apply(BasicIO.scala:203)
at scala.sys.process.ProcessBuilderImpl$Simple$$anonfun$4.apply$mcV$sp(ProcessBuilderImpl.scala:76)
at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:22)

"Thread-4" daemon prio=10 tid=0x00007fbde0540800 nid=0x13c8 runnable [0x00007fbdd3bbe000]
java.lang.Thread.State: RUNNABLE
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:242)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:273)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
- locked <0x00000000e1ab4fc8> (a java.lang.UNIXProcess$ProcessPipeInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at scala.sys.process.BasicIO$.loop$1(BasicIO.scala:225)
at scala.sys.process.BasicIO$.transferFullyImpl(BasicIO.scala:233)
at scala.sys.process.BasicIO$.transferFully(BasicIO.scala:214)
at scala.sys.process.BasicIO$$anonfun$toStdOut$1.apply(BasicIO.scala:208)
at scala.sys.process.BasicIO$$anonfun$toStdOut$1.apply(BasicIO.scala:208)
at scala.sys.process.ProcessBuilderImpl$Simple$$anonfun$3.apply$mcV$sp(ProcessBuilderImpl.scala:73)
at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:22)

"process reaper" daemon prio=10 tid=0x00007fbde053d800 nid=0x13c6 runnable [0x00007fbdd3ce7000]
java.lang.Thread.State: RUNNABLE
at java.lang.UNIXProcess.waitForProcessExit(Native Method)
at java.lang.UNIXProcess.access$200(UNIXProcess.java:54)
at java.lang.UNIXProcess$3.run(UNIXProcess.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

"Thread-2" daemon prio=10 tid=0x00007fbde04f7800 nid=0x13a7 runnable [0x00007fbdd810d000]
java.lang.Thread.State: RUNNABLE
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:242)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:273)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
- locked <0x00000000e1a9f430> (a java.lang.UNIXProcess$ProcessPipeInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at scala.sys.process.BasicIO$.loop$1(BasicIO.scala:225)
at scala.sys.process.BasicIO$.transferFullyImpl(BasicIO.scala:233)
at scala.sys.process.BasicIO$.transferFully(BasicIO.scala:214)
at scala.sys.process.BasicIO$$anonfun$toStdErr$1.apply(BasicIO.scala:203)
at scala.sys.process.BasicIO$$anonfun$toStdErr$1.apply(BasicIO.scala:203)
at scala.sys.process.ProcessBuilderImpl$Simple$$anonfun$4.apply$mcV$sp(ProcessBuilderImpl.scala:76)
at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:22)

"Thread-1" daemon prio=10 tid=0x00007fbde04f9800 nid=0x13a6 runnable [0x00007fbdd3ffe000]
java.lang.Thread.State: RUNNABLE
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:242)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:273)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
- locked <0x00000000e1a9d378> (a java.lang.UNIXProcess$ProcessPipeInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at scala.sys.process.BasicIO$.loop$1(BasicIO.scala:225)
at scala.sys.process.BasicIO$.transferFullyImpl(BasicIO.scala:233)
at scala.sys.process.BasicIO$.transferFully(BasicIO.scala:214)
at scala.sys.process.BasicIO$$anonfun$toStdOut$1.apply(BasicIO.scala:208)
at scala.sys.process.BasicIO$$anonfun$toStdOut$1.apply(BasicIO.scala:208)
at scala.sys.process.ProcessBuilderImpl$Simple$$anonfun$3.apply$mcV$sp(ProcessBuilderImpl.scala:73)
at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:22)

"process reaper" daemon prio=10 tid=0x00007fbde04f6000 nid=0x13a4 runnable [0x00007fbdd8135000]
java.lang.Thread.State: RUNNABLE
at java.lang.UNIXProcess.waitForProcessExit(Native Method)
at java.lang.UNIXProcess.access$200(UNIXProcess.java:54)
at java.lang.UNIXProcess$3.run(UNIXProcess.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

"Service Thread" daemon prio=10 tid=0x00007fbde0144800 nid=0x13a1 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=10 tid=0x00007fbde0142000 nid=0x13a0 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=10 tid=0x00007fbde013f800 nid=0x139f waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x00007fbde013d000 nid=0x139e waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0x00007fbde00ef000 nid=0x139d in Object.wait() [0x00007fbdd8a04000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000e18b5798> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
- locked <0x00000000e18b5798> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:189)

"Reference Handler" daemon prio=10 tid=0x00007fbde00ec800 nid=0x139c in Object.wait() [0x00007fbdd8b05000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000e18b5320> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
- locked <0x00000000e18b5320> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x00007fbde0009800 nid=0x1392 waiting on condition [0x00007fbde92d4000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at scala.tools.nsc.CompileSocket.getPort(CompileSocket.scala:131)
at scala.tools.nsc.CompileSocket.getsock$1(CompileSocket.scala:166)
at scala.tools.nsc.CompileSocket.getOrCreateSocket(CompileSocket.scala:184)
at scala.tools.nsc.ScriptRunner.compileWithDaemon(ScriptRunner.scala:80)
at scala.tools.nsc.ScriptRunner.scala$tools$nsc$ScriptRunner$$compile$1(ScriptRunner.scala:123)
at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply$mcZ$sp(ScriptRunner.scala:157)
at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply(ScriptRunner.scala:131)
at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply(ScriptRunner.scala:131)
at scala.tools.nsc.util.package$.trackingThreads(package.scala:51)
at scala.tools.nsc.util.package$.waitingForThreads(package.scala:35)
at scala.tools.nsc.ScriptRunner.withCompiledScript(ScriptRunner.scala:130)
at scala.tools.nsc.ScriptRunner.runScript(ScriptRunner.scala:188)
at scala.tools.nsc.ScriptRunner.runScriptAndCatch(ScriptRunner.scala:201)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:76)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)

"VM Thread" prio=10 tid=0x00007fbde00e5000 nid=0x139b runnable

"GC task thread#0 (ParallelGC)" prio=10 tid=0x00007fbde0018000 nid=0x1393 runnable

"GC task thread#1 (ParallelGC)" prio=10 tid=0x00007fbde001a000 nid=0x1394 runnable

"GC task thread#2 (ParallelGC)" prio=10 tid=0x00007fbde001b800 nid=0x1395 runnable

"GC task thread#3 (ParallelGC)" prio=10 tid=0x00007fbde001d800 nid=0x1396 runnable

"GC task thread#4 (ParallelGC)" prio=10 tid=0x00007fbde001f800 nid=0x1397 runnable

"GC task thread#5 (ParallelGC)" prio=10 tid=0x00007fbde0021000 nid=0x1398 runnable

"GC task thread#6 (ParallelGC)" prio=10 tid=0x00007fbde0023000 nid=0x1399 runnable

"GC task thread#7 (ParallelGC)" prio=10 tid=0x00007fbde0025000 nid=0x139a runnable

"VM Periodic Task Thread" prio=10 tid=0x00007fbde014f000 nid=0x13a2 waiting on condition

2013-08-21 23:48:24
Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode):

"Service Thread" daemon prio=10 tid=0x00007f7300144800 nid=0x13c3 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=10 tid=0x00007f7300142000 nid=0x13c2 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=10 tid=0x00007f730013f000 nid=0x13c1 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x00007f730013d000 nid=0x13c0 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0x00007f73000ef000 nid=0x13bf in Object.wait() [0x00007f72f318d000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000e18b5798> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
- locked <0x00000000e18b5798> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:189)

"Reference Handler" daemon prio=10 tid=0x00007f73000ec800 nid=0x13be in Object.wait() [0x00007f72f328e000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000e18b5320> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
- locked <0x00000000e18b5320> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x00007f7300009800 nid=0x13b4 runnable [0x00007f7307a77000]
java.lang.Thread.State: RUNNABLE
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
at java.net.ServerSocket.implAccept(ServerSocket.java:530)
at java.net.ServerSocket.accept(ServerSocket.java:498)
at scala.tools.util.SocketServer$$anonfun$1.apply(SocketServer.scala:48)
at scala.tools.util.SocketServer$$anonfun$1.apply(SocketServer.scala:46)
at scala.tools.nsc.io.Socket$Box.either(Socket.scala:32)
at scala.tools.util.SocketServer.loop$1(SocketServer.scala:82)
at scala.tools.util.SocketServer.run(SocketServer.scala:96)
at scala.tools.nsc.CompileServer$$anonfun$execute$1$$anonfun$apply$mcZ$sp$1.apply$mcZ$sp(CompileServer.scala:206)
at scala.tools.nsc.CompileServer$$anonfun$execute$1$$anonfun$apply$mcZ$sp$1.apply(CompileServer.scala:201)
at scala.tools.nsc.CompileServer$$anonfun$execute$1$$anonfun$apply$mcZ$sp$1.apply(CompileServer.scala:201)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
at scala.Console$.withOut(Console.scala:107)
at scala.tools.nsc.CompileServer$$anonfun$execute$1.apply$mcZ$sp(CompileServer.scala:201)
at scala.tools.nsc.CompileServer$$anonfun$execute$1.apply(CompileServer.scala:201)
at scala.tools.nsc.CompileServer$$anonfun$execute$1.apply(CompileServer.scala:201)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
at scala.Console$.withErr(Console.scala:148)
at scala.tools.nsc.CompileServer$.execute(CompileServer.scala:200)
at scala.tools.nsc.CompileServer$.main(CompileServer.scala:181)
at scala.tools.nsc.CompileServer.main(CompileServer.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at scala.tools.nsc.util.ScalaClassLoader$$anonfun$run$1.apply(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:139)
at scala.tools.nsc.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:71)
at scala.tools.nsc.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:139)
at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:28)
at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:45)
at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:35)
at scala.tools.nsc.ObjectRunner$.runAndCatch(ObjectRunner.scala:45)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)

"VM Thread" prio=10 tid=0x00007f73000e5000 nid=0x13bd runnable

"GC task thread#0 (ParallelGC)" prio=10 tid=0x00007f7300018000 nid=0x13b5 runnable

"GC task thread#1 (ParallelGC)" prio=10 tid=0x00007f730001a000 nid=0x13b6 runnable

"GC task thread#2 (ParallelGC)" prio=10 tid=0x00007f730001b800 nid=0x13b7 runnable

"GC task thread#3 (ParallelGC)" prio=10 tid=0x00007f730001d800 nid=0x13b8 runnable

"GC task thread#4 (ParallelGC)" prio=10 tid=0x00007f730001f800 nid=0x13b9 runnable

"GC task thread#5 (ParallelGC)" prio=10 tid=0x00007f7300021000 nid=0x13ba runnable

"GC task thread#6 (ParallelGC)" prio=10 tid=0x00007f7300023000 nid=0x13bb runnable

"GC task thread#7 (ParallelGC)" prio=10 tid=0x00007f7300025000 nid=0x13bc runnable

"VM Periodic Task Thread" prio=10 tid=0x00007f730014f000 nid=0x13c4 waiting on condition

JNI global references: 129

Heap
PSYoungGen total 27328K, used 2349K [0x00000000e18b0000, 0x00000000e3720000, 0x0000000100000000)
eden space 23488K, 10% used [0x00000000e18b0000,0x00000000e1afb598,0x00000000e2fa0000)
from space 3840K, 0% used [0x00000000e3360000,0x00000000e3360000,0x00000000e3720000)
to space 3840K, 0% used [0x00000000e2fa0000,0x00000000e2fa0000,0x00000000e3360000)
ParOldGen total 62336K, used 0K [0x00000000a4a00000, 0x00000000a86e0000, 0x00000000e18b0000)
object space 62336K, 0% used [0x00000000a4a00000,0x00000000a4a00000,0x00000000a86e0000)
PSPermGen total 21248K, used 9771K [0x000000009f800000, 0x00000000a0cc0000, 0x00000000a4a00000)
object space 21248K, 45% used [0x000000009f800000,0x00000000a018ac68,0x00000000a0cc0000)

JNI global references: 143

Heap
PSYoungGen total 27328K, used 4345K [0x00000000e18b0000, 0x00000000e3720000, 0x0000000100000000)
eden space 23488K, 18% used [0x00000000e18b0000,0x00000000e1cee6d0,0x00000000e2fa0000)
from space 3840K, 0% used [0x00000000e3360000,0x00000000e3360000,0x00000000e3720000)
to space 3840K, 0% used [0x00000000e2fa0000,0x00000000e2fa0000,0x00000000e3360000)
ParOldGen total 62336K, used 0K [0x00000000a4a00000, 0x00000000a86e0000, 0x00000000e18b0000)
object space 62336K, 0% used [0x00000000a4a00000,0x00000000a4a00000,0x00000000a86e0000)
PSPermGen total 21248K, used 10343K [0x000000009f800000, 0x00000000a0cc0000, 0x00000000a4a00000)
object space 21248K, 48% used [0x000000009f800000,0x00000000a0219c00,0x00000000a0cc0000)

/opt/scala-2.10.2/bin/scala: line 21: 5077 Quit (core dumped) "$@"
Could not connect to compilation daemon after 300 attempts.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-7774?orig=1
Reporter: Mike Slinn (mslinn)
Affected Versions: 2.10.2

[scabug]

Mike Slinn (mslinn) said:
Extra info:
$ scala
Welcome to Scala version 2.10.2 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_25).
Type in expressions to have them evaluated.
Type :help for more information.

scala> java.net.InetAddress.getLocalHost()
res0: java.net.InetAddress = praya/192.168.1.120

scala> mslinn@praya scala
$ ping 192.168.1.120
PING 192.168.1.120 (192.168.1.120) 56(84) bytes of data.
From 192.168.1.132 icmp_seq=1 Destination Host Unreachable

Not sure what is supposed to be at this IP address. I am running Ubuntu under VMware workstation on Windows using a laptop with only a wireless connection. Neither the host nor the guest OSes use this address.

[scabug]

@retronym said:
Could you try some of the troubleshooting steps from : http://www.scala-lang.org/old/node/7345.html ?

[scabug]

@retronym said:
Closing as incomplete until troubleshooting via [scala-user] is incomplete; JIRA is just for confirmed bugs.

[scabug]

Mike Slinn (mslinn) said:
Found the problem ... this was obscure (for me). The VMware client (which had hostname praya) had a bad entry in /etc/hosts:
192.168.1.120 praya

Once I corrected the IP address Scala worked. Some docs and error messages would be helpful.