failed to create a child event loop minecraft что делать
Minecraft Forums
java.lang.IllegalStateException: failed to create a child event loop
Hello. For a month and so I have been encountering an error that I have been trying to resolve, but my methods never work. I have encountered a java.lang.IllegalStateException: failed to create a child event loop
Time: 8/23/15 5:29 PM
Description: Updating screen events
java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:68)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:52)
at ll$1.a(SourceFile:44)
at ll$1.b(SourceFile:41)
at no.c(SourceFile:10)
at ll.a(SourceFile:121)
at ave.a(SourceFile:1942)
at axb.a(SourceFile:210)
at axu.a(SourceFile:350)
at axb.a(SourceFile:350)
at axu.k(SourceFile:413)
at axu.p(SourceFile:390)
at ave.s(SourceFile:1498)
at ave.av(SourceFile:889)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
at io.netty.channel.nio.NioEventLoop. (NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:64)
. 17 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl. (PipeImpl.java:170)
at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
at java.nio.channels.Pipe.open(Pipe.java:155)
at sun.nio.ch.WindowsSelectorImpl. (WindowsSelectorImpl.java:127)
at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
. 20 more
Caused by: java.net.ConnectException: Connection timed out: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Net.java:457)
at sun.nio.ch.Net.connect(Net.java:449)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:647)
at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
. 28 more
Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 2x Intel(R) Pentium(R) CPU G620T @ 2.20GHz
I have tried many methods, but failed. Below lists the methods I tried to fix my MC in chronological order:
#Reinstalled Minecraft (2 times)
#Uninstalled McAffe and rebooted (I had to install it again)
#Updated Java to the latest version and reinstalled it (My launcher is not on java)
#Shut down my computer
Failed to Connect to the Server
Playing one of my Singleplayer worlds would crash and say the same crash log like the one above.
If you find any suggestion, please comment. And if it works, thank you so much!
(Here are is image of trying to join a Multiplayer world)
(This thread will be edited if the issue/exception is resolved, or if there were mistakes to viewers, or I will update crash screen and detail in the future)
Minecraft Forums
Failed to create a child event loop
All necessary/helpful info should be in the link below. I have tried joining many servers but can’t. I’d appreciate the help and thanks very much.
Run a scan with adwcleaner.
So I ran the scan, deleted a few things and restarted my computer when prompted to but I still get java.lang.IllegalStateException: failed to create a child loop. Any more ideas on what it may be or how to fix? Again thanks for any help.
Some third party program may block your connection
Test it with disabled firewall and disabled antivirus program
so its been a while, but I got around to doing it but I still get the same issue. is there a posibility that something other than the firewall or an antivirus is doing this? i disabled windows realtime defender and that the only antivirus i have so i don’t know what else it could be.
Post a HijackThis log.
Download it here: https://sourceforge.net/projects/hjt/files/2.0.5 beta/HijackThis.exe/download
Run HijackThis as Administrator, click on «I accept», then «Do a system scan and save a log file».
Then a text file will open. Copy everything, then paste it on https://paste.ubuntu.com and give us the link.
While it does sound scary, it does not give us any personal or sensitive information.
Post a HijackThis log.
Download it here: https://sourceforge.net/projects/hjt/files/2.0.5 beta/HijackThis.exe/download
Run HijackThis as Administrator, click on «I accept», then «Do a system scan and save a log file».
Then a text file will open. Copy everything, then paste it on https://paste.ubuntu.com and give us the link.
While it does sound scary, it does not give us any personal or sensitive information.
its in the link I posted originally. it includes the minecraft error log, system information, and the HijackThis file. They are all separated into different sections by dotted lines.
java.lang.IllegalStateException: failed to create a child event loop
Details
Description
I attempt to open a world or join a server on Minecraft 1.9 to Latest Release, and get the error java.lang.NullPointerException: group when joining a server, and get this crash report when i try to load a single player world
Time: 8/7/17 9:36 AM
Description: Updating screen events
java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:88)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:58)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:47)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:58)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:77)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:72)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:59)
at ox$1.a(SourceFile:61)
at ox$1.b(SourceFile:58)
at rf.c(SourceFile:10)
at ox.a(SourceFile:152)
at bhz.a(SourceFile:2209)
at boj.e(SourceFile:229)
at boj.a(SourceFile:182)
at boi.a(SourceFile:82)
at bli.a(SourceFile:334)
at boi.a(SourceFile:116)
at bli.k(SourceFile:397)
at boi.k(SourceFile:49)
at bli.q(SourceFile:374)
at bhz.t(SourceFile:1625)
at bhz.az(SourceFile:1000)
at bhz.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:157)
at io.netty.channel.nio.NioEventLoop. (NioEventLoop.java:149)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:84)
. 29 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl. (PipeImpl.java:170)
at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
at java.nio.channels.Pipe.open(Pipe.java:155)
at sun.nio.ch.WindowsSelectorImpl. (WindowsSelectorImpl.java:127)
at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:155)
. 33 more
Caused by: java.net.SocketException: Invalid argument: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Net.java:457)
at sun.nio.ch.Net.connect(Net.java:449)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:647)
at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
. 41 more
– Head –
Thread: Client thread
Stacktrace:
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:88)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:58)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:47)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:58)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:77)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:72)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:59)
at ox$1.a(SourceFile:61)
at ox$1.b(SourceFile:58)
at rf.c(SourceFile:10)
at ox.a(SourceFile:152)
at bhz.a(SourceFile:2209)
at boj.e(SourceFile:229)
at boj.a(SourceFile:182)
at boi.a(SourceFile:82)
at bli.a(SourceFile:334)
at boi.a(SourceFile:116)
at bli.k(SourceFile:397)
at boi.k(SourceFile:49)
at bli.q(SourceFile:374)
– Affected screen –
Details:
Screen name: blg
Stacktrace:
at bhz.t(SourceFile:1625)
at bhz.az(SourceFile:1000)
at bhz.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)
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:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Using VBOs: Yes
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
OptiFine Version: OptiFine_1.12_HD_U_C4
Render Distance Chunks: 16
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.5.13399 Compatibility Profile Context 15.200.1062.1004
OpenGlRenderer: AMD Radeon HD 5800 Series
OpenGlVendor: ATI Technologies Inc.
CpuCount: 8
Non-Optifine Crash Report:
Time: 8/7/17 10:16 AM
Description: Updating screen events
java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:88)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:58)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:47)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:58)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:77)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:72)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:59)
at oz$1.a(SourceFile:61)
at oz$1.b(SourceFile:58)
at rh.c(SourceFile:10)
at oz.a(SourceFile:152)
at bib.a(SourceFile:2209)
at boi.a(SourceFile:212)
at blk.a(SourceFile:337)
at boi.a(SourceFile:352)
at blk.k(SourceFile:400)
at blk.q(SourceFile:377)
at bib.t(SourceFile:1625)
at bib.az(SourceFile:1000)
at bib.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:157)
at io.netty.channel.nio.NioEventLoop. (NioEventLoop.java:149)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:127)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:36)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:84)
. 20 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl. (PipeImpl.java:170)
at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
at java.nio.channels.Pipe.open(Pipe.java:155)
at sun.nio.ch.WindowsSelectorImpl. (WindowsSelectorImpl.java:127)
at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:155)
. 24 more
Caused by: java.net.SocketException: Invalid argument: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Net.java:457)
at sun.nio.ch.Net.connect(Net.java:449)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:647)
at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
. 32 more
– Head –
Thread: Client thread
Stacktrace:
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:88)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:58)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:47)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:58)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:77)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:72)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:59)
at oz$1.a(SourceFile:61)
at oz$1.b(SourceFile:58)
at rh.c(SourceFile:10)
at oz.a(SourceFile:152)
at bib.a(SourceFile:2209)
at boi.a(SourceFile:212)
at blk.a(SourceFile:337)
at boi.a(SourceFile:352)
at blk.k(SourceFile:400)
at blk.q(SourceFile:377)
– Affected screen –
Details:
Screen name: bli
Stacktrace:
at bib.t(SourceFile:1625)
at bib.az(SourceFile:1000)
at bib.a(SourceFile:419)
at net.minecraft.client.main.Main.main(SourceFile:123)
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
And I have tried reinstalling, and shut off Windows Defender (Firewall Program) and every other fix there is on this site, not a single one has worked.
java.lang.IllegalStateException: failed to create a child event loop
Details
Description
Time: 2/5/16 3:54 PM
Description: Updating screen events
java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:68)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:52)
at ll$1.a(SourceFile:44)
at ll$1.b(SourceFile:41)
at no.c(SourceFile:10)
at ll.a(SourceFile:121)
at ave.a(SourceFile:1942)
at axv.i(SourceFile:172)
at axv$a.a(SourceFile:224)
at awi.p(SourceFile:315)
at axv.k(SourceFile:82)
at axu.p(SourceFile:390)
at ave.s(SourceFile:1498)
at ave.av(SourceFile:889)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
at io.netty.channel.nio.NioEventLoop. (NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:64)
. 17 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl. (Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source)
at java.nio.channels.Pipe.open(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl. (Unknown Source)
at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
. 20 more
Caused by: java.net.SocketException: Unrecognized Windows Sockets error: 10107: socket
at sun.nio.ch.Net.socket0(Native Method)
at sun.nio.ch.Net.serverSocket(Unknown Source)
at sun.nio.ch.ServerSocketChannelImpl. (Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openServerSocketChannel(Unknown Source)
at java.nio.channels.ServerSocketChannel.open(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source)
. 29 more
– Head –
Stacktrace:
at io.netty.util.concurrent.MultithreadEventExecutorGroup. (MultithreadEventExecutorGroup.java:68)
at io.netty.channel.MultithreadEventLoopGroup. (MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup. (NioEventLoopGroup.java:52)
at ll$1.a(SourceFile:44)
at ll$1.b(SourceFile:41)
at no.c(SourceFile:10)
at ll.a(SourceFile:121)
at ave.a(SourceFile:1942)
at axv.i(SourceFile:172)
at axv$a.a(SourceFile:224)
at awi.p(SourceFile:315)
at axv.k(SourceFile:82)
at axu.p(SourceFile:390)
– Affected screen –
Details:
Screen name: aya
Stacktrace:
at ave.s(SourceFile:1498)
at ave.av(SourceFile:889)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)
Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz
Steps I have tried
Few things to consider
If you need any further information to work with the problem, please let me know. Thank you in advance
failed to create a child event loop/failed to open a new selector/Too many open files
I am getting errors like «failed to create a child event loop/failed to open a new selector/Too many open files» when there are 30 or more concurrent requests. How to solve the above errors? Am I doing anything wrong? I am using Spring boot and Java cassandra driver. Below is the connection file:
Below is the ConnectionBean file which I used in Connection file:
Below is the class from where ConnectionBean variables are initialized :
And finally, below is the class through which I am querying cassandra data:
1 Answer 1
If getConnection() is being invoked for every request, you are creating a new Cluster instance each time.
This is discouraged because one connection is created between your client and a C* node for each Cluster instance, and for each Session a connection pool of at least one connection is created for each C* node.
If you are not closing your Cluster instances after a request completes, these connections will remain open. After a number of requests, you’ll have so many connections open that you will run out of file descriptors in your OS.
To resolve this issue, create only one Cluster and Session instance and reuse it between requests. This strategy is outlined in 4 simple rules when using the DataStax drivers for Cassandra: