zookeeper - [NIOServerCnxn@383] - 导致会话 0x0 关闭的异常：Len 错误 1195725856答案

【问题标题】：zookeeper - [NIOServerCnxn@383] - Exception causing close of session 0x0: Len error 1195725856zookeeper - [NIOServerCnxn@383] - 导致会话 0x0 关闭的异常：Len 错误 1195725856
【发布时间】：2021-09-13 21:09:20
【问题描述】：

我正在尝试在我的 Windows 中安装 zookeeper。无论我在zookeeper + Kafka - Unable to create data directory 中遵循哪个建议，我都会收到以下错误。

我以管理员身份运行它，我已经尝试了所有这些选项：

#dataDir=/tmp/zookeeper
#dataDir=:\zookeeper-3.4.14\
#dataDir=C:\\_d\\WSs\\kafka\\zookeeper-3.4.14\\data
#dataDir=:\\\\zookeeper\\\\data
dataDir=C:\\_d\\WSs\\kafka\\zookeeper-3.4.14

我认为这无关紧要，但让我在这里补充一下：我有 Java 11。

任何想法为什么会发生将不胜感激。

完整日志

C:\Windows\system32>zkserver

C:\Windows\system32>call "C:\Program Files\Java\jdk-11.0.2"\bin\java "-Dzookeeper.log.dir=C:\_d\WSs\kafka\zookeeper-3.4.14\bin\.." "-Dzookeeper.root.logger=INFO,CONSOLE" -cp "C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\build\classes;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\build\lib\*;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\*;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\*;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\conf" org.apache.zookeeper.server.quorum.QuorumPeerMain "C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\conf\zoo.cfg"
2019-04-18 15:17:42,629 [myid:] - INFO  [main:QuorumPeerConfig@136] - Reading configuration from: C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\conf\zoo.cfg
2019-04-18 15:17:42,644 [myid:] - INFO  [main:DatadirCleanupManager@78] - autopurge.snapRetainCount set to 3
2019-04-18 15:17:42,644 [myid:] - INFO  [main:DatadirCleanupManager@79] - autopurge.purgeInterval set to 0
2019-04-18 15:17:42,644 [myid:] - INFO  [main:DatadirCleanupManager@101] - Purge task is not scheduled.
2019-04-18 15:17:42,644 [myid:] - WARN  [main:QuorumPeerMain@116] - Either no config or no quorum defined in config, running  in standalone mode
2019-04-18 15:17:42,769 [myid:] - INFO  [main:QuorumPeerConfig@136] - Reading configuration from: C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\conf\zoo.cfg
2019-04-18 15:17:42,769 [myid:] - INFO  [main:ZooKeeperServerMain@98] - Starting server
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:zookeeper.version=3.4.14-4c25d480e66aadd371de8bd2fd8da255ac140bcf, built on 03/06/2019 16:18 GMT
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:host.name=DESKTOP-AKCNE7F
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:java.version=11.0.2
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:java.vendor=Oracle Corporation
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:java.home=C:\Program Files\Java\jdk-11.0.2
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:java.class.path=C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\build\classes;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\build\lib\*;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\zookeeper-3.4.14.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\audience-annotations-0.5.0.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\jline-0.9.94.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\log4j-1.2.17.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\netty-3.10.6.Final.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\slf4j-api-1.7.25.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\lib\slf4j-log4j12-1.7.25.jar;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\..\conf
2019-04-18 15:17:47,344 [myid:] - INFO  [main:Environment@100] - Server environment:java.library.path=C:\Program Files\Java\jdk-11.0.2\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\iCLS\;C:\Program Files\Intel\Intel(R) Management Engine Components\iCLS\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Java\jdk-11.0.2\bin;C:\Program Files\Git\cmd;C:\ProgramData\chocolatey\bin;C:\_d\tools\apache-maven-3.6.0\bin;C:\_d\WSs\kafka\zookeeper-3.4.14\bin\;C:\Users\jimis\AppData\Local\Programs\Python\Python37-32\Scripts\;C:\Users\jimis\AppData\Local\Programs\Python\Python37-32\;C:\Users\jimis\AppData\Local\Microsoft\WindowsApps;.
2019-04-18 15:17:47,360 [myid:] - INFO  [main:Environment@100] - Server environment:java.io.tmpdir=C:\Users\jimis\AppData\Local\Temp\
2019-04-18 15:17:47,360 [myid:] - INFO  [main:Environment@100] - Server environment:java.compiler=<NA>
2019-04-18 15:17:47,360 [myid:] - INFO  [main:Environment@100] - Server environment:os.name=Windows 10
2019-04-18 15:17:47,360 [myid:] - INFO  [main:Environment@100] - Server environment:os.arch=amd64
2019-04-18 15:17:47,376 [myid:] - INFO  [main:Environment@100] - Server environment:os.version=10.0
2019-04-18 15:17:47,376 [myid:] - INFO  [main:Environment@100] - Server environment:user.name=jimis
2019-04-18 15:17:47,376 [myid:] - INFO  [main:Environment@100] - Server environment:user.home=C:\Users\jimis
2019-04-18 15:17:47,376 [myid:] - INFO  [main:Environment@100] - Server environment:user.dir=C:\Windows\system32
2019-04-18 15:17:47,391 [myid:] - INFO  [main:ZooKeeperServer@836] - tickTime set to 2000
2019-04-18 15:17:47,391 [myid:] - INFO  [main:ZooKeeperServer@845] - minSessionTimeout set to -1
2019-04-18 15:17:47,391 [myid:] - INFO  [main:ZooKeeperServer@854] - maxSessionTimeout set to -1
2019-04-18 15:17:47,782 [myid:] - INFO  [main:ServerCnxnFactory@117] - Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory
2019-04-18 15:17:47,797 [myid:] - INFO  [main:NIOServerCnxnFactory@89] - binding to port 0.0.0.0/0.0.0.0:2181
2019-04-18 15:18:00,365 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@222] - Accepted socket connection from /127.0.0.1:54057
2019-04-18 15:18:00,375 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@222] - Accepted socket connection from /127.0.0.1:54058
2019-04-18 15:18:00,378 [myid:] - WARN  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@383] - Exception causing close of session 0x0: Len error 1195725856
2019-04-18 15:18:00,379 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1056] - Closed socket connection for client /127.0.0.1:54057 (no session established for client)

***已编辑

*** 我的问题的答案是“你可以忽略我在 curl 127.0.0.1:port 时出错的事实。Kafka 仍然在工作。

【问题讨论】：

标签： apache-zookeeper java-11

【解决方案1】：

您是否尝试对 zookeeper 客户端端口执行“HTTP GET”？

所以错误来自NIOServerCnxn.java:readLength，它需要一个 4 个字母的命令或前 4 个字节表示大小的缓冲区。

十六进制的数字 1195725856 是 0x47455420，即 ASCII 中的“GET”。

因此，当您尝试对 2181 端口执行“HTTP GET”时会导致错误消息。

$ curl http://0.0.0.0:2181/
curl: (52) Empty reply from server
$ sudo tail /var/log/zookeeper/zookeeper.out
...
2019-04-19 12:56:25,303 [myid:3] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@215] - Accepted 
2019-04-19 12:56:25,304 [myid:3] - WARN  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@383] - Exception causing close of session 0x0: Len error 1195725856
2019-04-19 12:56:25,304 [myid:3] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1040] - Closed socket connection for client /127.0.0.1:33011 (no session established for client)

这个WARN 消息可以安全忽略，因为ZooKeeper 只会关闭curl 响应所暗示的客户端会话。

【讨论】：

我检查了 throw netstat -anp |找到“：”2181”，我可以看到端口是免费的。我在上面的原始问题中添加了日志。你知道与 Hiperr-V 有任何可能的冲突吗？我有我公司提供的笔记本电脑，我可以' t 安装 Docker，因为与使用的 Citrix Receivere 存在一些冲突，我无法关闭它。好吧，我提到了我与 Docker 的问题，以防它可能会在你脑海中敲响关于 Zookeepr 任何可能问题的警钟。Zookeeper 是否依赖于幕后的一些虚拟化？
我没有使用过 Docker 或 Citrix 软件，所以对此我无能为力。 ZooKeeper 只是一个多线程的 Java 应用程序。没有我知道的虚拟化。
好吧，既然你复制了我的问题，你建议我检查一下？ PS。端口号是免费的
该错误并不意味着 ZooKeeper 没有工作。它只是说尝试了错误的命令。在您的主机上尝试echo stat | nc 127.0.0.1 2181 以查看您的 ZooKeeper 是否正常工作。
您的stat 表明 ZooKeeper 正在工作，所以我很确定您可以忽略它。我的回答可能不够清楚。