Category Archives: Error

How to Solve HiveServer2 & Beeline Error

1. Hive hiveserver2 starts, the process exists, but the exception of port 10000 is not found?

Add a configuration in hive-site.xml and restart the hiveserver2 service

<property>
    <name>hive.metastore.event.db.notification.api.auth</name>
    <value>false</value>
</property>

2. Beeline can’t connect to hiveserver2, report to org apache.hadoop.security.authorize.AuthorizationException?

Permission problem. Entity users such as root are not allowed to access

Add the following configuration in core-site.xml, distribute the configuration, remember to distribute , restart Hadoop, and connect again

<property>
    <name>hadoop.proxyuser.root.hosts</name>
    <value>*</value>
</property>
<property>
    <name>hadoop.proxyuser.root.groups</name>
    <value>*</value>
</property>

How to Solve Keras calls plot_model error

1. Error information

When building the neural network model, you can call plot in keras_ The model module draws a schematic diagram of the model to facilitate the adjustment of the model structure:

from tensorflow.keras.models import Model
from tensorflow.keras.utils import plot_model
model = Model(dense_inputs+sparse_inputs, output_layer)
plot_model(model, "fm_model.png", show_shapes=True)

As a result, the following error messages appear:

(‘Failed to import pydot. You must pip install pydot and install graphviz (ht

tps://graphviz.gitlab.io/download/ ), ‘, ‘for pydotprint to work.’)

Understand the error message: the installation is complete without pydot and graphviz packages

2. Solutions

2.1 installation of graphviz package

pip install graphviz

2.2 download and install graphviz Exe file and install

In Windows Environment

Download address: https://graphviz.gitlab.io/download/

2.3 configuring environment variables for graphviz

2.4 installing pydot package

pip install pydot-ng

2.5 restart development tools

Restart the IDE or other development tools (Jupiter notebook) with immediate effect.

3. Summary

1. Installing pydot and graphviz packages directly according to the error message does not work

2. You need to go to the website to download the corresponding EXE file or zip file. After installation, specify the environment variables

3. Don’t forget to restart your ide or other development tools

DingDing Error: missing mainframe dll [How to Solve]

Repair steps:
1. Press “windows logo key + X”, Start Windows PowerShell (administrator) Enter the command “auto repair system
2. Dism/online/cleanup image/scanhealth” to scan all system files and compare them with the official system files to scan for inconsistencies in the computer
3. The command dism/online/cleanup image/checkhealth must be used when the system file is found to be damaged after the previous command is executed
4. Dism/online/cleanup image/restorehealth this command restores those different system files into official system source files
5. Restart after completion. No matter whether the above is successful or not, type the following command: SFC/scannow

Jenkins error: exception message 137 

ERROR: Exception when publishing, exception message [Exec exit status not zero. Status [137]]
Build step 'Send files or execute commands over SSH' changed build result to UNSTABLE
Finished: UNSTABLE

At present, there is no better information to support this error. Now record it. Due to too many execution script directories, try to put the script under the remote directory of the remote server

Oracle Start as DBA Error [How to Solve]

Problem Description:

In the morning, I created Oracle11g on the new machine and reported an error when starting with the startup command:

This error message means:
ora-00119: the initialization parameters of the system are invalid

Ora-00132: unresolved network listener name

My understanding: there is a problem with the listening configuration in the initialization file. It cannot be initialized and listening cannot be started.

Troubleshooting direction:

View the initialization file. Everyone has different installation paths.

The initialization file must exist in the Oracle installation directory orcl. My path:

Open the initialization file in Notepad and find the local listening configuration: local_Listener: the original local listening configuration parameter is listener_ORCL

Now, change it to:

local_listener=(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)

verification:

Load initialization file synchronously at startup:

The database started successfully.

Kotlin gets the ID automatically error [How to Solve]

Use Android studio to automatically create a kotlin project. To automatically obtain the ID in the layout in the project, you need to follow the steps below

1. In the project build Add ‘kotlin Android extensions’ to gradle

plugins {
    id 'com.android.application'
    id 'kotlin-android'
    id 'kotlin-android-extensions'
}

2. To modify the configuration of sourcecompatibility, the default studio is automatically created using kotlin_version

 compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

3. Find gradle.properties file in the root directory of the project, Add android.enableJetifier=true:

android.enableJetifier=true

All right! Then you can use it.
when using it, you need to import the layout file.
normally, press and hold act + enter to select import for automatic import, or you can add it manually. For example, the name of my layout file is activity_main.XML that is import kotlinx android.synthetic.main.activity_main.*

 import kotlinx.android.synthetic.main.activity_main.*

Vs code execute command error [How to Solve]

Inexplicable mistake about vs Code

Error Description:

Drive not found. If you enter any execution command in the vs Code terminal, you will report “drive not found”. The name is’ ‘ The drive for ‘C’ does not exist.

Solution:

    1. download the cmder plug-in in vs Code

    1. modify the default terminal

 

    1. steps: File —— preferences —— settings —— search shell —— Click to enter the file

"terminal.integrated.shell.windows": "C:\\WINDOWS\\System32\\cmd.exe"

Note out and replace with:

"terminal.integrated.shell.windows": "cmd.exe",
"terminal.integrated.env.windows": {"CMDER_ROOT": "[cmder_root]"},
"terminal.integrated.shellArgs.windows": ["/k", "[cmder_root]\\vendor\\init.bat"],

As shown in the figure:
4 Save exit, restart vs Code

GoLand import the local package Error [How to Solve]

The local package imported by GoLand is red, recording a very speechless problem

Shortly after contacting go, I found a problem when I wrote a little demo with a blog. Importing another local package in one package will be popular, and importing a third-party package is no problem

Solution: open this setting of goland

[Solved] Python2 Install tensorflow Error: class DescriptorBase(metaclass=DescriptorMetaclass), SyntaxError: invalid syntax

When Python 2 installs tensorflow, test after the installation is completed:

import tensorflow as tf

Will report an error:

Traceback (most recent call last):
File “<stdin>”, line 1, in <module>
File “/home/zhaokai/.local/lib/python2.7/site-packages/tensorflow/__init__.py”, line 28, in <module>
from tensorflow.python import pywrap_tensorflow  # pylint: disable=unused-import
File “/home/zhaokai/.local/lib/python2.7/site-packages/tensorflow/python/__init__.py”, line 52, in <module>
from tensorflow.core.framework.graph_pb2 import *
File “/home/zhaokai/.local/lib/python2.7/site-packages/tensorflow/core/framework/graph_pb2.py”, line 7, in <module>
from google.protobuf import descriptor as _descriptor
File “/home/zhaokai/.local/lib/python2.7/site-packages/google/protobuf/descriptor.py”, line 113
class DescriptorBase(metaclass=DescriptorMetaclass):
^
SyntaxError: invalid syntax

The solution is to re-install protobuf:

pip install protobuf==3.17.3

then Import tensorflow again.