Redis client 2.0.0 pipeline list rpop bug, redisrpop
Description:
The rpop of the list OF redis client 2.0.0 pipeline has a serious bug. When the rpop list is used, if the list is already empty, the Response from rpop is still not null, causing the listresponse to be suspended. the get () method throws an exception.
Code:
@Testpublic void testRedisPipeline(){ Jedis jedis = null; try{ jedis =
Several lines of code to call functions in the unix pipeline style, and several lines of unixAfter using linux, you basically know its pipeline, which is to use the output of a program or command as the input of another program or command.
To put it bluntly, let's look at how python can be used to call functions in the unix pipeline style.
#coding=utf-8class Pip
Example of pipeline usage in python
This example describes how to use pipelines in python. Share it with you for your reference. The details are as follows:
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#! Coding = UTF-8 Import multiprocessing Def consumer (pipe ): Output_p, input_p = pipe Input_p.close () # Close the input of the Pipeline While Tr
Today, when writing a shell script, I want to use a CD to enter the Xargs pipeline output directory, but prompted an error. Details are as follows:"Environment description"Directory structure:[Email protected] nagiosclient_db]# ls-ltrTotal 2488-rw-r--r--. 1 root root 405725 Mar 3 14:12 nrpe-2.12.tar.gz-rw-r--r--. 1 root root 2095419 Mar 3 14:12 nagios-plugins-1.4.15.tar.gzDrwxrwxrwx. 501 root 4096 Mar 3 14:36 nagios-plugins-1.4.15Drwxrwxr-x. 7 4096 Ma
1. Pipeline FlowIn Linux | Symbol represents pipeline FlowUsage: Command1 | Command2The standard output of the first command will be the standard input for the second commandExample: Cat A.txt | grep "ABC"2.IO Streamstdin---Standard input stream with descriptor 0STDOUT---Standard output stream, descriptor 1STDERR---Standard error stream, descriptor 23. RedirectionOutput:N> Redirect-overlayExample: Cat A.txt
1. Function description
Pipe (Establish pipeline):
1) header file #include
2) define function: int pipe (int filedes[2]);
3 Function Description: Pipe () creates the pipe and returns the file descriptor from the parameter Filedes array.
Filedes[0] is the read end of the pipe
FILEDES[1] is the write end of the pipe.
4) return value: If successful, return zero, otherwise return-1, the reason for the error in errno.
Error code:
Emfile process ha
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Problem description
Jenkins2.0 Pipeline Frame IPipeline (that is, PLLL Library) set the trigger conditions for Mergeci to change merged mode and fixed, that is, the code to go after +2 points, Then the core member clicks the submit button to push the code into the library before triggering the MERGECI process, the VERIFYCI and mergec
Excerpt from hereThe nature of the HTTP protocol itself determines that any Web application works by listening, receiving, and processing HTTP requests and finally responding to requests, and HTTP request processing is a typical application scenario for piping design. We customize a message processing pipeline based on the processing process of the HTTP request, allowing incoming HTTP request messages to flow into the
In the last article, I believe that we have a vague understanding of the concept of pipelines, this article through code examples to strengthen the understanding of the pipeline.The pipe function is mainly used to create pipelines, and the pipes are prototyped as follows:First, function prototype#include int pipe (int pipefd[2]);Parameters: An integer array, after the pipeline is created successfully, Pipefd[0] represents the read end of the
The Cubesource object is a box data source object. This time a box object is displayed based on the successful installation of the TVTK library. With the following code, we set up a box data source with a length-width height of 1.0,2.0,3.0 and display it through the pipeline. fromTvtk.apiImportTvtk#Import TVTK Librarys = tvtk. Cubesource (x_length=1.0,y_length=2.0,z_length=3.0)#Create a box data source and set the length -to-width heightm = tvtk. Poly
only how many characters-M: list only6.Tee: Bidirectional redirect Tee [-A] file-A: Add data to file in a cumulative wayEg:ls-l Home | Tee ~/homefile | MoreThe data of LS is saved to ~/homefile, and the output information is also available on the screen.7.TR: Delete or replace text in a message tr [-ds] SET1 ...-D: Delete message SET1 this string-S: replace repeating charactersEg1:last | TR ' [A-z] ' [A-z] ' converts lowercase characters into uppercase letterseg2:cat/etc/passwd | Tr-d ': ' Dele
/var5.outLs/var >/tmp/var5.outCat/tmp/var5.outEnter redirection:Example:CatAbcCtr+c (Exit)Cat Tr ' A-Z ' A-ZAbcCtr+c (Exit)Tr ' A-Z ' A-Z '/etc/fstab--cannot be executedTr ' A-Z ' A-Z ' Cat The first lineThe second line.END (Exit)Cat >>/tmp/myfile.txt The first LindeThe second line.Eofcat/tmp/myfile.txt--input text is stored in the documentPipeline: The output of the previous command, as input to the latter commandCommand 1 | Command 2 | Command 3 | ...Example:echo "Hello, World."echo "Hello, w
As LS |less-mn meaning to output the LS result to less[ls] = = Pipe = = [More]ls commandLs-a Show hidden files Ls-t sorted by timestamp ls-fLs-l Show Long columnsLs-r Recursive display of informationCreate a file Touch Create a folder mkdirmkdir dir3 dir4 DIR5 Create multiple foldersmkdir ~/games Create the Games folder in this directory of logged-in usersMkdir-p DIR6/DIR7/DIR8 Creating multi-tier foldersCopying a replicated folderExample:-->tomcat -Other--Folder-->tomcat_2 Steps#cd Tomcat into
/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>650 "this.width=650;" src= "http ://s3.51cto.com/wyfs02/m00/46/2f/wkiol1publ-iusfmaaakblq9auq407.jpg "title=" Clipboard4.png "alt=" Wkiol1publ-iusfmaaakblq9auq407.jpg "/>REDIRECT error output to an empty device, that is, ignore the error messagePipeline:The result of executing the previous command as input to the following commandSuch as:Ls-r |more: Pagination shows the results of Ls-rLS |grep CLC: Search for files co
Environment:DELPHI XE, Unidac 6.2.8, (options->provider=prnativeclient) program is compiled and placed on Windows Server 2003 (SP2 32-bit) to run,Connection MSSQL2005 (32-bit) times the following error:Named pipe provider: There are no processes on the other end of the pipeline.Determine that the SQL Server Native Client driver is already installed.Workaround: Enable the named Pipes protocol.UNIDAC connection Error: Named pipe provider: There are no processes on the other end of the
Dynamic | The main idea of the data has been solved, the following start to write detailed design (in the Sybase ASE database for example, others to expand):
1. Establish the middle-tier table vdt_columns, which is used to build the column data in the pipeline.
To perform similar code generation:
Ls_sql = "CREATE Table Vdt_columns" ("
Ls_sql + = "UID int null,"
Ls_sql + = "Upkey varchar (1) NULL,"
Ls_sql + = "Udmid int null,"
Ls_sql + = "udmname
project, each time a test task is called a message case test report needs to be visually presented to the user, without having to let the user click on the link to view it, so we can extend it as quickreport to the Mail and Jenkins Summary report:
Jenkins Summary Report as follows, the user-defined table has been expanded below, as shown in the following figure:
The same message is also extended to display, as shown in the following illustration:
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The relevant optimiza
Demosaic is the key algorithm to interpolate Bayer image into RGB image, the quality of this algorithm is directly related to ISP pipeline. Ispforfun will spend some effort on this module. Ispforfun First notice the implementation of the AHD algorithm in Dcraw, but the AHD algorithm is not suitable for the direct use of hardware implementation, so the necessary modifications to AHD, a hardware-based AHD scheme is obtained. The image below is the effec
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