dremel 3700

big data on clusters, does not apply to processing large-scale streaming data in real time. In order to meet the requirements of real-time, the flow calculation and real-time computing framework based on the data warehouse is also emerging, and the relevant real-time optimization technology around Mr is booming, and the representative system is Google Dremel, Twitter Storm and Yahoo S4.The application types of big data are mainly divided into two asp

proportions. The only text uncompressed format we can see with the naked eye. However, after textfile compression, it is not splitable, that is, in the mapr of the implementation process can only be regarded as a large, this will greatly affect the efficiency. From the performance point of view, the future log format will be more choice orc (rcfile), parquet (Google legend 3 seconds to query 1PB data Dremel Open Source implementation version). Inter

Tags: filter example row storage Dremel processing Speed font statement classificationA few graphs to read the column-type storageThe parallel execution of SQL queries is derived from Dremel and Impala , so we take this opportunity to learn more about relational databases and the parallel computation of relational algebra . speedup and scaleup Speedup refers to using twice times the hardware for half of

, parentProcesspid== $fd========================================= Second Fork ChildProcesspid==3700, the parentProcesspid== $fe========================================= second childProcesspid== $FF, parentProcessPID = = $FD ========================================= Second childProcesspid==3700, the parentProcessPID = = $Fe =========================================You can see that the PID at the beginning of

indicators are high, the system is performing a large number of insert/update/delete;PCT of blocks changed per read = (block changes)/(logical reads) Recursive call% The ratio of recursive calls; Recursive Call% = (recursive calls)/(user calls) Rollback per transaction% Transaction rollback ratio. Rollback per transaction%= (Rollback)/(Transactions) Rows per Sort The average number of rows involved in each order; Rows per sort= (sorts (rows))/(sor

)/(usercalls) Rollback pertransaction% transaction rollback ratio. Rollbackpertransaction%= (Rollback)/(transactions) Rows perSort average number of rows involved in each sort ;RowsperSort= (sorts rows ) / (sorts (disk) +sorts (memory)) Note that these loadprofile load metrics provide 2 dimensions persecond and per in this link Transaction persecond: is primarily to divide the delta value in snapshots by the number of seconds in fast-stand time , for example V$sysstat View responses

Label:One: Generate the View permission information that the department user ownsCreate or replace procedure refreshuseridofcity asCursor c_job is select Id,dept_code,dept_name from Ram_department order by dept_code;--defining cursorsC_row C_job%rowtype;--defines a cursor variable c_row, which is a row of data type in the cursor c_jobv_result varchar2 ($);v_deptlevel varchar2 (2);--Departmental level, 1 city level, 2 normal levelv_levelname VARCHAR2 (60);--level nameV_prov number;--Level identif

Tcp600: 3700: * LISTEN12826/java Tcp600: 8181: * LISTEN12826/java Tcp600: 7676: * LISTEN12826/java Open firewall port # Firewall-cmd -- zone = public -- add-port = 8686/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 4848/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 8080/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 3700/tcp -- permanent # Firewall-cmd --

discipline. It is also because of the weak copyright Concept of Chinese people and the relatively blocking of academic fields. So why can the r language be accepted by a large number of data analysts? There are many reasons for this:2.1 Advantages and features From the history of R language development, R is mainly a language developed by statisticians to solve problems in the field of data analysis. Therefore, R has some unique advantages: Statisticians and cutting-edge algorithms covering a

The current communication methods are inseparable from the IP network. To combine the two, you must use the gateway. Now let's talk about the knowledge of Cisco's unified voice gateway. Which models are available in these products, and what are the differences between these models? Cisco Unified Communication Voice Gateway Cisco 1700, 2600XM, 2800, 3700 and 3800, and Cisco Catalyst? The 5000 Series Voice Gateway Router uses SIP to terminate a call and

is called when I is called. The following is a script played by a friend. please refer to: the script file IFS is used to change the separator to press enter [root @ fangs sh] # cat w3.sh #! /Bin/bashnode = ". /hosts.txt "IFS = $ '\ n' # command = $ @ for I in 'cat $ node | grep-v" # "'Do port = 22 new_port = $ (echo $ I | awk '{print $2 }') if [! -Z $ new_port]; then port = $ new_port fi host =$ (echo $ I | awk '{print $1 }') echo-e "====== Host $ host \ tPort $ port ====" ssh-p $ port $ host

:::8686 :::* listen12826/java tcp60 0:::4848 :::* LISTEN12826/java tcp60 0:::8080 :::* LISTEN12826/java tcp60 0:::3700 :::* LISTEN12826/java TCP6 0 0::: 8181:::* LISTEN 12826/javaTCP6 0 0::: 7676:::* LISTEN 12826/javaOpen firewall port# firewall-cmd--zone=public--add-port=8686/tcp--permanent# firewall-cmd--zone=public--add-port= 4848 /tcp--permanent# firewall-cmd--zone=public--add-port=8 080 /tcp--permanent# firewall-cmd--zone=public--

, D, or M. Each Roman numeral have a base value:Arabic numerals are 0,1,2..9, and Roman numerals are i,v,x,l,c,d,m.Symbol I V X L C D M Base value 1 5 10 50 100 500 1000The value of the symbol I V X L C D m is 1 5 10 50 100 500 1000.The value of a pair AR is a times the base value of R. Normally, you add up the values of the pairs to get the overall Val Ue. However, wherever there is consecutive symbols ara0r0 with R0 have a strictly bigger base value than R, the value of PA IR AR must is subtra

LotsR320 e5-2403 8G 1TB SATA Enterprise DVD (cold cuts) 6850R420 e5-2403 8G 1tsas*2 H310 DVD (cold cuts) 8200R420 e5-2403 4G 1TB SAS H310 DVD (cold heating pan) 7600R430 e5-2403v3 8G 1TSAS H330 DVD (Cold electric plate) 8900 NewR520 e5-2403 8G 300gsas*2 H310 DVD (cold heating pan) 9700 need to discussR620 e5-2603 8G 300gsas10k H310 DVD (Cold electric plate) 9800 spotR720 e5-2603 8G 300gsas*1 H310 DVD 495W single 8 back plate 10000 massR730 e5-2603v3 8G 300g10k*2 H330 495W single non-optical dri

InstancesExample 1: no parameter query[[email protected] ~]# lsAnaconda-ks.cfg Install.log Install.log.syslogExample 2: Show whether it is a file or a directory, its size, date and time of modification, the name of the file or directory, and the owner of the file and its permissions[Email protected]/]# ls-lTotal 90Dr-xr-xr-x. 2 root root 4096 Jul 19:24 binDr-xr-xr-x. 5 root root 8 19:19 bootDrwxr-xr-x. Root root 3700 Jul 03:46 DevDrwxr-xr-x. 03:46 ro

tcp6 0 0::: 80 :::* LISTEN [[emailprotected] ~]# lsof-i: 80[[emailprotected] ~]# Ps-ef | grep nginx[[emailprotected] ~]# curl-i 10.201.106.134[[emailprotected] ~]# wget 10.201.106.134[[email protected] ~]# Curl-o/dev/null-s-w "%{http_code}" 10.201.106.134% total% Received% xferd Average speed Time Time Dload Upload Total spent left Speed100 3700 100 3700 0 0 695k 0--:--:----:--:----:--:--0curl-s silent

When data transmission on the LAN fails, it is often difficult to determine whether it is a link fault or a port fault. Therefore, troubleshooting and isolation are required to fix faults. The following describes the simple judgment process:Take the 3700/2900 series switch as an example. On the 3700/2900 switch, it is already an IOS operating system. If a problem occurs during port transmission, run the fol

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:171956,166904:5052:3600:-1452,percent=-40%select:176039,171964:4075:3700:-375,percent=-10%usleep:181117,176046:5071:3700:-1371,percent=-37%select:185191,181124:4067:3800:-267,percent=-7%usleep:190281,185199:5082:3800:-1282,percent=-33%select:194356,190288:4068:3900:-168,percent=-4%usleep:199434,194363:5071:3900:-1171,percent=-30%select:203505,199441:4064:4000:-64,percent=-1%usleep:208602,203512:5090:4000:-

Tcp600: 3700: * LISTEN12826/java Tcp600: 8181: * LISTEN12826/java Tcp600: 7676: * LISTEN12826/java Open firewall port # Firewall-cmd -- zone = public -- add-port = 8686/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 4848/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 8080/tcp -- permanent # Firewall-cmd -- zone = public -- add-port = 3700/tcp -- permanent # Firewall-cmd --