How big the spark stream window could be? -

-

i have data flows need calculated. thinking use spark stream job. there 1 thing not sure , feel worry about.

my requirements :

data comes in csv files every 5 minutes. need report on data of recent 5 minutes, 1 hour , 1 day. if setup spark stream calculation. need interval 5 minutes. need setup 2 window 1 hour , 1 day.

every 5 minutes there 1gb data comes in. 1 hour window calculate 12gb (60/5) data , 1 day window calculate 288gb(24*60/5) data.

i not have experience on spark. worries me.

  1. can spark handle such big window ?

  2. how ram need calculation 288 gb data? more 288 gb ram? (i know may depend on disk i/o, cpu , calculation pattern. want estimated answer based on experience)

  3. if calculation on 1 day / 1 hour data expensive in stream. have better suggestion?


Comments

Post a Comment

Popular posts from this blog

html - Styling progress bar with inline style -

-
i trying set progress bar color red using inline style. need in way because have access <body> part of document. style need apply: progress { color: red } progress::-moz-progress-bar { background: red;} progress::-webkit-progress-value { background: red; } progress[aria-valuenow]:before { background: red; } i tried <progress style="background: red;"> incorrect effect, progress bar color turns blue red background. guide right direction desired style? thank in advance. here live example: https://jsfiddle.net/z36d3f6l/
Read more

java - Oracle Sql developer error: could not install some modules -

-
i have downloaded fresh copy of sqldeveloper ( sqldeveloper-4.1.3.20.78-no-jre ) oracle website. when unzip , lauch gui, keep getting following error message: warning - not install modules: dynamic module config - no module providing capability org.netbeans.netbinox found. my system: windows 7 32 bit hp probook. jdk 1.6 , 1.7, 1.8 available in java/jdk subdirectory. netbeans 8.0.2 installed finally got way out after dirty hours. extracted sqldeveloper zip in nested directory. i.e: e://a/b/c/sqldeveloper. starting sqldeveloper gui above directory threw erros. solution: go in c:\users**username**\appdata\roaming : delete sql developer , sqldeveloper folders extract sql developer zip in new non nested directory. i.e: e:// start , should work now reference: https://community.oracle.com/thread/3870680?start=0&tstart=0
Read more

How to use autoclose brackets in Jupyter notebook? -

-
this may sound silly question, how make use of autoclose brackets in jupyter notebook? example, when type print( jupyter notebook auto-closes brakets print() and places cursor inside. type argument, say print(1 + 1) now cursor between second 1 , right bracket ) . key navigate right of ) ? of course can press end or → or ) achieve this, not seem save time, purpose of brackets autoclose suppose? thanks in advance.
Read more