bolt configuration

About Storm's spout, bolt structure diagram 　　 The Green section is our most commonly used and relatively simple part. The red part is related to the transaction and will be explained in a later article. basecomponent is the "lazy" class that storm provides. Why do you say that, it and its subclasses are more or less implementing some of the methods of their interface definitions. This allows us to inherit the class directly, rather than writing all t

Because in the work based on Thunderbolt bolt development is IM products, need to implement the function of custom user picture.But Bolt in the image of the default stretch sawtooth effect is very obvious, so that they implement the image stretching function, the code has been shared, to see: "Thunderbolt bolt image stretching unclear solution."However, in the us

. According to the logic, we want to have its emit multiple messages of different emaildeliverstatus objects. But in fact, this is not the case because storm's emit operations are not executed immediately, The above Code is based on the assumption that after emit is called, storm will immediately send messages. If you follow the preceding statement, bolts will find that multiple messages in the for loop received by the receiver are repeated for multiple times in the last message. Storm does

The effect of the image stretching in the Thunderbolt Bolt Library is more severe, and is often caused by aliasing:1, in the use of Imageobject, DrawMode for 1 stretch mode;2, using the stretch function of bitmap class to stretch the image;Although Imageobject has the AntiAlias attribute to support anti-aliasing, there is no particularly significant optimization effect after setup.The way to solve the aliasing is to write the tensile function in C + +

, typically the implementation of this method is to remove messages from Message Queuing to prevent re-sending. void Fail (Object msgid) A callback method that handles a tuple failure, and typically the implementation of this method is to put the message back in the message queue and then re-send it later in time. Nexttuple () The storm framework calls this method all the time, and the output is stepless to Outputcollector. This method should be non-blocking. Nexttuple,ack and fail are called in

SolidWorks How to draw a hinge hole bolt two-dimensional engineering drawing? 1, click on the blank page "new" frame to the right of the drop-down arrow, select "From parts/assembly drawings to make engineering drawings" 2, select "A4" Engineering drawings, click "OK", into the engineering drawing editor 3, you can see the right side "drag the view to the engineering drawing drawings", which "on", "after" and "isometric" t

Questions Guide1. What is the cluster environment in this article? 2. What is the relationship between worker and slot in the configuration? 3. How the throughput is tested. 1. Hardware configuration information 6 servers, 2 cpu,96g,6 cores, 24 threads 2. Cluster information Storm cluster: 1 x nimbus,6 supervisor nimbus:192.168.7.127 supervisor:192.168.7.128 192.168.7.129 192.168.7.130 192.168.7.131 1

Storm Configuration Graphic ParsingReference reading: http://www.xiaofateng.com/?p=959 ============================== | Sample-topology | | ------------------------ | Task 1 Task 2 Task 3 | | Worker Process 1 | | T1 T2 T3 | | +--------+ | | Spout = Bolt and Bolt | | +------+ | +----+ | | | Parallelism parallelism Paralle

1. Hardware configuration information 6 servers, 2 cpu,96g,6 cores, 24 threads 2, cluster information Storm cluster:1 x nimbus,6 Supervisor nimbus:192.168.7.127 Supervisor 192.168.7.128 192.168.7.129 192.168.7.130 192.168.7.131 192.168.7.132 192.168.7.133 Zookeeper cluster: 3 nodes 192.168.7.127:2181, 192.168.7.128:2181, 192.168.7.129:2181 Kafka cluster: 7 nodes 192.168.7.127:9092 192.168.7.128:9092 192.168.7.129:9092 192.168.7.130:9092 192.168.7.13

name, even behavior password, multiple users write multiple lines, the content format is as follows:TestUser1AminglinuxUser1987654321Edit Change Permissions: chmod 600/etc/vsftpd/vsftpd_login cannot be read by all usersConvert the text password file to a computer-recognized binary: db_load-t-T hash-f/etc/vsftpd/vsftpd_login/etc/vsftpd/vsftpd_login.dbdirectory where the virtual user configuration file is created: mkdir/etc/vsftpd/vsftpd_user_confThis

Hostname configuration/etc/sysconfig/network hostname can not be changed to the form of the domain nameShell>vim/etc/sysconfig/networkNetworking=yesNetworking_ipv6=noHostname=mail1.gz.comLocal domain name resolution configuration is often used for testing, of course, in a system of their own internal use is also very commonShell>vim/etc/hosts192.168.2.10 mail1.gz.com192.168.2.20 mail2.gz.comDNS

Regular backup of gadgets in configuration files and configuration tables, configuration file configuration backup The currently maintained configuration files/tables are all manually backed up by people. The last time a machine went down, I wanted to pull the application o

Learning jquery Mobile also has a period of time, getting started, and more and more like him. I have no reason to refuse him at all. Here I have to share my instructions for the use of its configuration items.See Code Explanation:$ (document). Live ("Pageinit", function (event) {$.mobile.loadingmessage = "Loading data, please wait ...";　　 Mobile.pageloaderrormessage= "Sorry, the system seems to be a little sleepy ..."; $.mobile.loadingmessagetextvisi

manages the start and end of each worker process running on the Supervisor node. Through the Supervisor.slots.ports configuration item in the storm's configuration file, you can specify the maximum number of slots allowed on a single supervisor, each slot is uniquely identified by the port number, and a port number corresponds to a worker process (if the worker process is started). ZooKeeper Used to coordi