nifi processors

protocols and multiple methods of data processing, there are processors in the Netty. processors, as their names indicate, are designed to handle specific events or event groups in Netty. An event is a common way of describing it, for example, you have a processor that converts an object to byte, or vice versa; As you have a processor, exceptions are notified and processed during processing.Realizing Chann

instantiate it by reflection. The opening of the extension is achieved, while the closure of the modification is ensured. Readers familiar with spring should think of the spring IOC implementation.Annotations make simple Factory mode not simpleIn the example above, the reflection was used to open the extension and close the modification. Sometimes, however, it is not convenient to use the full name of the class, and it is more appropriate to use aliases. For example, each bean in spring has an

), carFactory2 can be instantiated through reflection. Enable the extension and disable the modification. Readers familiar with Spring should think of the implementation of Spring IoC.Annotations make the simple factory model not simple In the preceding example, reflection is used to enable extension and disable modification. However, in some cases, it is not convenient to use the full name of a class, so it is more appropriate to use aliases. For example, each Bean in Spring has an ID, which i

the following statement directly into hive:Use Splitjson to extract and delimit data arraysCREATE EXTERNAL TABLE if not exists finance.awen_optd ( secid string, tradedate date, Optid string, Ticker string, secshortname string, exchangecd string, presettleprice double, precloseprice double, Openprice Double, highestprice double, lowestprice double, closeprice double, settlprice Double, Turnovervol double, turnovervalue double, openint int) ROW FORMAT SERDE ' Org.apache.hive.hcata

products in this area are highly competitive, such as tableau, Qlik, etc.The originator of the scheduling tool, Oozie, can implement several scenarios in which the MapReduce task runs in series, and later Nifi and kettle other tools provide a more powerful scheduling implementation, worth a try.There is no doubt that Hadoop's data governance is relatively straightforward relative to the traditional database ecosystem. Atlas is hortonworks new data go

the current task is executed in parallel (with multiple instances at the same time), a prefix is output before each record is output prefix . Prefix is the position of the current subtask in the global context.Sink in common connectorsFlink itself provides some connector support for third-party mainstream open source systems, which are: Elasticsearch Flume Kafka (0.8/0.9 version) Nifi Rabbitmq Twitter The sink of the

This chapter describes the software optimization technology for Multithreaded Applications that run in a multi-processor (MP) system or a processor environment with hardware-based multithreading support. A multi-processor system is a system with two or more slots, each with a physical processor package. Intel 64 and IA-32 processors with hardware multithreading support, including dual-core processors, quad-

. Processors with larger L3 caches provide more efficient file system cache behavior and shorter message and processor queue lengths.　　In fact, the earliest L3 cache was applied on AMD's K6-III processor, when the L3 cache was limited to the manufacturing process and was not integrated into the inside of the chip, but integrated on the motherboard. The L3 cache, which can only be synchronized with the system bus frequency, is not much worse than the m

thread B need to communicate, thread A will first refresh the modified x value in its local memory to the main memory. In this case, the x value in the main memory is changed to 1. Then, thread B goes to the main memory to read the updated x value of thread A. At this time, the x value of thread B's local memory is also changed to 1. On the whole, these two steps are essentially because thread A is sending messages to thread B, and the communication process must go through the main memory. By c

\ __asm je L0 \ __asm _emit 0xF0 \ __asm L0: inline Jint atomic::cmpxchg (jint exchange_value, volatile jint* dest , Jint compare_value ) { // Alternative for interlockedcompareexchange int MP = OS::IS_MP (); __asm { mov edx, dest mov ecx, exchange_value mov eax, compare_value lock_if_mp (MP) Cmpxchg DWORD ptr [edx], ecx } } As the source code above shows, the program will

decide whether to add a lock prefix for the CMPXCHG directive based on the type of current processor. If the program is running on a multiprocessor, add the lock prefix (lock CMPXCHG) to the cmpxchg instruction. Conversely, if the program is running on a single processor, the lock prefix is omitted (the single processor itself maintains sequential consistency within a single processor and does not require the memory barrier effect provided by the lock prefix). Intel's manual describes the lock

__asm je L0 __asm _emit 0xF0 __asm l0:inline jint atomic::cmpxchg (jint Exchange_value, volatile jint* dest, Jint compare_value) { //Alternative for InterlockedCompareExchange int MP = OS::IS_MP (); __asm { mov edx, dest mov ecx, exchange_value mov eax, compare_value lock_if_mp (MP) Cmpxchg DWORD ptr [edx], ecx }}As shown in the source code above, the program determines whether to ad

operation of the memory is performed atomically. In processors prior to Pentium and Pentium, instructions with a lock prefix lock the bus during execution, leaving other processors temporarily unable to access memory through the bus. Obviously, this will cost you dearly. Starting with the Pentium 4,intel Xeon and P6 processors, Intel has made a significant optim

Server With the advent of the AMD Opteron processor, the 8-way server based on the x86 architecture has greatly reduced the OEM's entry threshold. On the eve of the advent of the dual-core server processor, both the old 8-way server vendors withdrew and more new players were involved. Already the weather of the 8-way server market, the future will bring to users what new ideas? In the traditional x 8 6 server design, the multi-channel server is the SMP (symmetric multiprocessor) design, its des

Preface 32-bit and 64-bit systems are often mentioned in the computer field, but many people do not know the difference between 32-bit and 64-bit systems. Therefore, I have compiled some documents online, I hope to share with you. For 32-bit and 64-bit, this article will explain from the processor, operating system, and JVM respectively. IA Introduction Introduction Speaking of processors, most people use Intel's