hadoop - Restrict secondarynamenode to be installed and run on any other node in the cluster -

-

i have have cloudera cdh3u4 cluster setup. have secondarynamenode daemon running on 1 of nodes.

i have ensure user has root access node on cluster (for example, datanode not have other daemons running) should not able start instance of secondarynamenode daemon on node (thereby having 2 secondarynamenodes on cluster)

how can achieve this?

thanks in advance.

add property hdfs-site.xml 

namedfs.secondary.http.address valuesecondarynamenode-host address or ip:50090

Comments

Post a Comment

Popular posts from this blog

javascript - Unusual behaviour when drawing lots of images onto a large canvas -

-
in javascript code, download bunch of links of images, , draw them canvas in grid theme. number of links there are, , set width , height of canvas accordingly, there 200 images per row. height based on total number images. problem noticing based on height use, images show on canvas. example, if set height 12 rows, see images, if set on that, no images show up. when setting in 1 row, images show in firefox 23. ie9 , chrome29 shows nothing. does know if there wrong here, or stable way drawing lots of images large canvas? thanks. function onprofilesuccessmethod(sender, args) { alert("request arrived"); var listenumerator, piccount, item, picobj, path, office, ctx, x, y, imageobj; listenumerator = listitems.getenumerator(); piccount = listitems.get_count(); var w = 125; var h = 150; var rl = 200; var canvas = document.createelement('canvas'); canvas.id = "picgallery"; canvas.width = w * rl; canvas....
Read more

how can i manage url using .htaccess in php? -

-
i want manage url of website right showing me www.computermall.co.in/product_details.php?prdid=34 but want www.computermall.co.in/product_details/34 how can it? i have tried this options +followsymlinks -multiviews rewriteengine on rewritebase /computermall # uri-path directly the_request variable rewritecond %{the_request} ^(get|head)\s/(.*)\.php [nc] # strip extension , redirect permanently rewriterule .* /%2 [r=301,l,nc] rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewritecond %{request_uri} !\.php [nc] # map internally original resource rewriterule ^(.*)$ $1.php [l,qsa] try this: rewriteengine on rewriterule ^product_details/prdid/([^/]*)$ /product_details?prdid=$1 [l] edit: removed leading slash
Read more

javascript - Chart.js - setting tooltip z-index -

-
http://jsfiddle.net/gmannib/j2mwpj43/7/ ^ see sample fiddle above. notice how tooltips piechart go underneath "earth" icon have in middle there? there way set z-index property of tooltips above earth icon? thought work? race.tooltip.style.zindex = "5"; i'm still learning...thank kind help! just give higher z-index value canvas , done. see demo . css code canvas#race{position:relative; z-index:1;}
Read more