Background:
Execute the following statement to report an error:
mysqldump.exe -uroot -p --master-data=2 --single-transaction --routines --triggers --events mc_orderdb > aa.sqlTried Methods:
1. Modify the configuration file and add the following configuration
#Enable binary logging
log-bin=mysql-binThen restart the service
It doesn’t work
2. Delete — master data = 2 parameter
Export succeeded
Ionic builds APK file and reports an error
I have inquired a lot and said that the version has been reduced, but my version has always been 3.9 1
Error 1: NPM run serve reports an error when Vue project is started: error: cannot find module ‘webpack’ require stack
After the project is pulled down and the dependencies are installed normally, start the project and report error: cannot find module ‘webpack’ require stack. It is found that the webpack module is missing,
Error: Cannot find module 'webpack'
Require stack:
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
However, I have already installed webpack. Here, I need to re open CMD to install webpack globally
reason:
even if you installed webpack before, it must be a non global installation
Solution:
npm install -g webpack
After the installation is complete, I start the project and find that it reports an error again!
Reported error: Error: Rule can only have one resource source (provided resource and test + include + exclude) in
Error 2: Project Error: Error: Rule can only have one resource source (provided resource and test + include + exclude) in
Error: Rule can only have one resource source (provided resource and test + include + exclude) in {
"exclude": [
null
]
reason:
package. Webpack version conflict in JSON
Solution::
delete the webpack and reinstall the previous version
npm uninstall webpack
npm install webpack@^4.0.0 --save-dev
jitpack.io ERROR: No build artifacts found
The foreword is solved
preface
Before, Android studio has been used to develop open source libraries and put them into jitpack Compile and package on Io. Recently, due to the research on the kotlin multiplatform of JetBrains, it is changed to develop an independent JVM library or multiplatform Library in idea. The multiplatform library is placed in jitpack There are bound to be problems with IO, because jitpack There are only JVM environments on Io. However, when the JVM library is put on, there are compilation success and packaging errors, error: no build artifacts found
Solution:
This is actually due to the fact that the com.android.libraryplugin is included when developing the library in Android studio, and artifacts are generated. But there is no need to put the com.android.libraryplugin in when making the jvm library ;
So we need to add artifacts manually.
Modify build Gradle file
groovy:
publishing {
publications {
// This mavenJava can be filled in randomly, it's just a task name
// MavenPublication must have, this is the task class to call
mavenJava(MavenPublication) {
// The header here is the artifacts configuration information, do not fill in the default
groupId = 'org.gradle.sample'
artifactId = 'library'
version = '1.1'
from components.java
}
}
}
If it is build gradle.kts file
kotlin:
publishing {
publications {
create("maven_public", MavenPublication::class) {
groupId = "org.gradle.sample"
artifactId = "library"
version = "1.1"
from(components.getByName("java"))
}
}
}
Finish
The SVN server version is too old to support tlsv1.0 0
The development client system is deepin (v20.3). Check/etc/SSL/OpenSSL CNF file
[system_default_sect]
MinProtocol = TLSv1. 2
CipherString = DEFAULT@SECLEVEL =2
the system supports to 1.2 by default, changes to 1.0, and then submits the problem for solution.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restHighLevelClient' defined in class path resource [com/esdemo/config/ElasticSearchClientConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.NoClassDefFoundError: org/elasticsearch/common/xcontent/DeprecationHandler
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:590)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:398)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:330)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1258)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246)
at com.esdemo.EsdemoApplication.main(EsdemoApplication.java:13)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.NoClassDefFoundError: org/elasticsearch/common/xcontent/DeprecationHandler
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:582)
... 18 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/elasticsearch/common/xcontent/DeprecationHandler
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.elasticsearch.client.RestHighLevelClient.<clinit>(RestHighLevelClient.java:1741)
at com.esdemo.config.ElasticSearchClientConfig.restHighLevelClient(ElasticSearchClientConfig.java:19)
at com.esdemo.config.ElasticSearchClientConfig$$EnhancerBySpringCGLIB$$cca08d.CGLIB$restHighLevelClient$0(<generated>)
at com.esdemo.config.ElasticSearchClientConfig$$EnhancerBySpringCGLIB$$cca08d$$FastClassBySpringCGLIB$$14e70886.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361)
at com.esdemo.config.ElasticSearchClientConfig$$EnhancerBySpringCGLIB$$cca08d.restHighLevelClient(<generated>)
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 org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
... 19 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.common.xcontent.DeprecationHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 43 common frames omitted
Process finished with exit code 1
Solution:
Check whether the jar package of ES is introduced into Maven’s POM file
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>7.7.0</version>
</dependency>If there is still an error after introducing the jar package, add the following to the startup class
System.setProperty("es.set.netty.runtime.available.processors", "false");
Error Messages:
[root@cpucode100 bin]# beeline -u jdbc:hive2://cpucode100:10000 -n root
Connecting to jdbc:hive2://cpucode100:10000
21/12/15 21:41:51 [main]: WARN jdbc.HiveConnection: Failed to connect to cpucode100:10000
Error: Could not open client transport with JDBC Uri: jdbc:hive2://cpucode100:10000: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): User: root is not allowed to impersonate root (state=08S01,code=0)
Beeline version 3.1.2 by Apache Hive
Connecting to jdbc:hive2://cpucode100:10000
21/12/16 21:15:53 [main]: WARN jdbc.HiveConnection: Failed to connect to cpucode100:10000
Could not open connection to the HS2 server. Please check the server URI and if the URI is correct, then ask the administrator to check the server status.
Error: Could not open client transport with JDBC Uri: jdbc:hive2://cpucode100:10000: java.net.ConnectException: Connection refused (Connection refused) (state=08S01,code=0)
Beeline version 3.1.2 by Apache Hive
Solution:
The configuration information in the hadoop file core-site.xml is as follows, restart Hadoop, and start hiveserver2 and beeline again. Can
Replace the root below with your own username
<property>
<name>hadoop.proxyuser.root.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.root.groups</name>
<value>*</value>
</property>
distribute
xsync /etc
Restart start
myhadoop.sh stop
myhadoop.sh start
hive --service hiveserver2
Wait, it will be a long time here, about 10 minutes
beeline -u jdbc:hive2://cpucode100:10000 -n root
libs/granite/ui/components/shell/header/user/User has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
Specific corresponding version:
JDK 1.1 = 45 JDK 1.2 = 46 JDK 1.3 = 47 JDK 1.4 = 48 Java SE 5.0 = 49 Java SE 6.0 = 50 Java SE 7 = 51 Java SE 8 = 52 Java SE 9 = 53 Java 10 = 54 Java 11 = 55 Java 12 = 56 …
So the question is, how to replace the version?
First of all, the easiest way is to check whether java has been installed through the command: java -version
View the java package of yum source: yum list java*
Install java108jdk software: yum -y install java-1.8.0-openjdk****
Verify that the installation is successful, check the java version: java -version
The following error occurs during a MySQL database backup:
InnoDB: Operating system error number 24 in a file operation.
InnoDB: Error number 24 means ‘Too many open files’
InnoDB: Some operating system error numbers are described at http://dev.mysql.com/doc/refman/5.7/en/operating-system-error-codes.html
It is found that there are too many data files:
a total of 90811 data files.
View number of open files:
[root@localhost ~]# ulimit -Sn
1024
[root@localhost ~]# ulimit -Hn
4096
Description of this check command:
ulimit [-HSTabcdefilmnpqrstuvx [limit]]
Provides control over the resources available to the shell and to processes started by it, on systems that allow such control. The -H and -S options specify that the hard or soft
limit is set for the given resource. A hard limit cannot be increased by a non-root user once it is set; a soft limit may be increased up to the value of the hard limit.
-n The maximum number of open file descriptors (most systems do not allow this value to be set)
Query the maximum number of files opened by the operating system:
# cat /proc/sys/fs/nr_open
1048576
In the file/etc/security/limits Conf settings:
mysql hard nofile 65535
mysql soft nofile 65535
mysql hard nproc 65535
mysql soft nproc 65535
You can also replace MySQL with *
the problem of re backup is solved.
An error is reported when testing pytorch multi card:
store = tcpstore (master_addr, master_port, world_size, start_daemon, timeout)
runtimeerror: address already in use
After investigation, there is another task running with DDP.
Solution:
manually specify an idle port
python -m torch.distributed.launch --master_port 145622
View port occupancy:
terminal input
netstat - nultp
Error occurs when JMeter test is used to save test files concurrently: error loading results file – see file log
solution: create a new text file (any type is OK), and add <?XML version = “1.0” encoding = “UTF-8”?> to the file.
Create a new text TXT copy and paste
after modifying the suffix extension, the corresponding file name can be XXX csv
CUDA error: device-side assert triggered
CUDA kernel errors might be asynchronously reported at some other API call,so the stacktrace below might be incorrect.
For debugging consider passing CUDA_LAUNCH_BLOCKING=1.
When the four categories of label is 1-4, change it to 0-3 can