isr 1921

Introduction to inputstreamreader and outputstreamwriter. I. inputstreamreader class Inputstreamreader exchanges byte streams into bytes streams. It is a bridge between byte stream and byte stream. If no character set encoding is specified, the decoding process uses the default character encoding of the platform, for example, GBK. Constructor: Inputstreamreader ISR = new inputstreamreader (inputstream in); // constructs an inputstreamreader cla

From: http://blog.csdn.net/guly699/archive/2009/10/19/4696722.aspx First, I would like to introduce some of the commonly usedConcept 1. IRQ (interrupt request), physical interrupt request 2. sysintr, logical interrupt 3. ISR (interrupt service routine), service interruption routine 4. Ist (interrupt service thread), interrupt service thread Interrupt handling General interrupt handling process: 1. When an interruption occurs, the microprocessor jumps

, the above algorithm is wrong, because it is obvious that each topic partition 0 will be allocated on broker 0, the 1th partition is assigned to broker 1, until the partition ID exceeds the broker's data begins to repeat from scratch, This causes the pressure on the front several machines to be greater than the pressure on the rear machine.Therefore, Kafka is to randomly pick a broker to place partition 0, and then place other partitions sequentially. As the case:Topic:ljh_test3 PartitionCount:

Service Interruption Program It is an important part of the device driver. In order to respond to external interruptions in a timely manner and prevent interruption loss, the interrupted service program should be as small as possible, and only the most necessary tasks should be placed Run the command in the interrupted service program. Generally, after the system is started and the hardware device is initialized, the ISR and the interrupt vector are

functions in ser16550. There is also an isr16550 subdirectory that contains the serial port driver dedicated to installable ISR (interrupt service routines), while many hardware device drivers use ce default installable ISRGiisr. dll. An example of registry settings for a serial port device is as follows: [HKEY_LOCAL_MACHINE \ drivers \ builtin \ serial_1] Key Meaning "Sysintr" = DWORD: 13 The interrupt ID of

node/brokers/ids/Second, Cluster.scalaThe so-called Kafka cluster is actually the currently available broker collection. Since more than one Broker,cluster class is involved, it is necessary to define a variable of the container class to hold the broker. Yes, it defines the brokers variable and uses a variable HASHMAP to do the underlying implementation. Key is the broker's id,value is the corresponding broker instance. There are two ways of creating a Kafka cluster: 1. Create an empty cluster

attempting to resend the message.send.max.retries (the default is 3), the user can choose to stop sending subsequent data or choose to continue selecting send. Selecting continue sending will cause data blocking, and selecting stop sending will result in the loss of the data that should have been sent to the broker, and if producer uses asynchronous mode, Producer will attempt to resend the Message.send.max.retries (the default is 3) and record the exception and continue sending subsequent data

As the CE help document says, creating OAL is a very complex task, and the usual approach is to replicate the original OAL code of the same platform and modify it to accommodate the special requirements of the platform. That is to say, for a platform without special requirements, it is sufficient to copy the OAL code of the original same platform. Because of the complexity of OAL in this article, I only explain the common parts. First, the implementation of

order-r,–recursive List all directory layers and sub-files for all current directories4. Example:Example one: List all directories and files under the root directory[BEGIN] 2015/12/19 21:14:26[[email protected] ~]# pwd/root[[email protected] ~]# ls-a... Anaconda-ks.cfg. bash_history. bash_logout. Bash_profile bashrc. CSHRC install.log install.log.syslog sersync2.5. 4_64bit_binary_stable_final.tar.gz. Tcshrc[end] 2015/12/19 21:14:39Example Two: list all the directories and files under the root d

replicas can be elected as new leader.Kafka replication chooses the second method, which has two main reasons:The second method can withstand more fault tolerance in the same number of replicas. For example, with a total of 2n+1 replicas, the second method can withstand a 2n copy failure (as long as there is an ISR that can write normally), while the first method can withstand only n replica failures. If, in the case of only two replicas, the first m

Set_p: 3.1 from /brokers/topics/[topic]/partitions/[partition]/state Reads the current ISR for the partition. 3.2 Determines the new leader for the partition. If at least one replica in the current ISR still survives, select one as the new leader, and the new ISR contains all the surviving replica in the current ISR