Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Microsoft is giving away 50,000 FREE Microsoft Certification exam vouchers. Get Fabric certified for FREE! Learn more

Reply
Srisakthi
Helper V
Helper V

High Concurrency session in Data pipeline

Hello Everyone,

 

Consider a scenario where I have 10 notebooks and a datapipeline which uses session tag to call all those notebooks, in this case how many high concurrency session will be created ?

 

Regards,

Srisakthi

5 REPLIES 5
v-nmadadi-msft
Community Support
Community Support

Hi @Srisakthi ,

May I ask if you have resolved this issue? If so, please mark the helpful reply and accept it as the solution. This will be helpful for other community members who have similar problems to solve it faster.

Thank you.

 

Srisakthi
Helper V
Helper V

Hi @ObungiNiels ,

 

Thanks for your quick response. Yeah what i have understood is as per documentation, per high concurrency session can hold 5 notebooks. What I wonder is suppose if i have 6 notebooks which is attached to lakehouse1 then HC1 will be attached to only 5 notebooks and other one will be attached to HC2 right?

 

Regards,

Srisakthi

Hi @Srisakthi , yes this is what happened to me. Here a screenshot from my Monitor of a pipeline in which I ran a notebook 11 times:

ObungiNiels_0-1744722366290.png

As you can see from the HC session id attached to the activity name, 5 notebooks were assigned to HC session starting with aa1a, another 5 to 0b99 and the final notebook ran under session f222. 

 

So it behaves in a way that high concurrency session are being filled up to the limit of 5 and new session are started when necessary. 🙂 

ObungiNiels
Resolver I
Resolver I

Adding on this, the number of parallel sessions is contrained by what can be achieved with the capacity in place. When running a small capacity (F2 or F4), it is possible that only one HC concurrency session will be started at the same time while all other notebooks are being queued until the first session resolves. 

ObungiNiels
Resolver I
Resolver I

Hi @Srisakthi ,

this is an interesting question! I just tried this out and for me, two high concurrency sessions were started to process 10 notebooks running in parallel from a data pipeline. When I added an 11th notebook, a third HC session was started.

This observation alligns with the upper limit of 5 notebooks which can be connected to a single HC session when started up manually. 

 

Hope this helps! 

 

Kind regards,

Niels

Helpful resources

Announcements
MarchFBCvideo - carousel

Fabric Monthly Update - March 2025

Check out the March 2025 Fabric update to learn about new features.

March2025 Carousel

Fabric Community Update - March 2025

Find out what's new and trending in the Fabric community.

"); $(".slidesjs-pagination" ).prependTo(".pagination_sec"); $(".slidesjs-pagination" ).append("
"); $(".slidesjs-play.slidesjs-navigation").appendTo(".playpause_sec"); $(".slidesjs-stop.slidesjs-navigation").appendTo(".playpause_sec"); $(".slidesjs-pagination" ).append(""); $(".slidesjs-pagination" ).append(""); } catch(e){ } /* End: This code is added by iTalent as part of iTrack COMPL-455 */ $(".slidesjs-previous.slidesjs-navigation").attr('tabindex', '0'); $(".slidesjs-next.slidesjs-navigation").attr('tabindex', '0'); /* start: This code is added by iTalent as part of iTrack 1859082 */ $('.slidesjs-play.slidesjs-navigation').attr('id','playtitle'); $('.slidesjs-stop.slidesjs-navigation').attr('id','stoptitle'); $('.slidesjs-play.slidesjs-navigation').attr('role','tab'); $('.slidesjs-stop.slidesjs-navigation').attr('role','tab'); $('.slidesjs-play.slidesjs-navigation').attr('aria-describedby','tip1'); $('.slidesjs-stop.slidesjs-navigation').attr('aria-describedby','tip2'); /* End: This code is added by iTalent as part of iTrack 1859082 */ }); $(document).ready(function() { if($("#slides .item").length < 2 ) { /* Fixing Single Slide click issue (commented following code)*/ // $(".item").css("left","0px"); $(".item.slidesjs-slide").attr('style', 'left:0px !important'); $(".slidesjs-stop.slidesjs-navigation").trigger('click'); $(".slidesjs-previous").css("display", "none"); $(".slidesjs-next").css("display", "none"); } var items_length = $(".item.slidesjs-slide").length; $(".slidesjs-pagination-item > button").attr("aria-setsize",items_length); $(".slidesjs-next, .slidesjs-pagination-item button").attr("tabindex","-1"); $(".slidesjs-pagination-item button").attr("role", "tab"); $(".slidesjs-previous").attr("tabindex","-1"); $(".slidesjs-next").attr("aria-hidden","true"); $(".slidesjs-previous").attr("aria-hidden","true"); $(".slidesjs-next").attr("aria-label","Next"); $(".slidesjs-previous").attr("aria-label","Previous"); //$(".slidesjs-stop.slidesjs-navigation").attr("role","button"); //$(".slidesjs-play.slidesjs-navigation").attr("role","button"); $(".slidesjs-pagination").attr("role","tablist").attr("aria-busy","true"); $("li.slidesjs-pagination-item").attr("role","list"); $(".item.slidesjs-slide").attr("tabindex","-1"); $(".item.slidesjs-slide").attr("aria-label","item"); /*$(".slidesjs-stop.slidesjs-navigation").on('click', function() { var itemNumber = parseInt($('.slidesjs-pagination-item > a.active').attr('data-slidesjs-item')); $($('.item.slidesjs-slide')[itemNumber]).find('.c-call-to-action').attr('tabindex', '0'); });*/ $(".slidesjs-stop.slidesjs-navigation, .slidesjs-pagination-item > button").on('click keydown', function() { $.each($('.item.slidesjs-slide'),function(i,el){ $(el).find('.c-call-to-action').attr('tabindex', '-1'); }); var itemNumber = parseInt($('.slidesjs-pagination-item > button.active').attr('data-slidesjs-item')); $($('.item.slidesjs-slide')[itemNumber]).find('.c-call-to-action').attr('tabindex', '0'); }); $(".slidesjs-play.slidesjs-navigation").on('click', function() { $.each($('.item.slidesjs-slide'),function(i,el){ $(el).find('.c-call-to-action').attr('tabindex', '-1'); }); }); $(".slidesjs-pagination-item button").keyup(function(e){ var keyCode = e.keyCode || e.which; if (keyCode == 9) { e.preventDefault(); $(".slidesjs-stop.slidesjs-navigation").trigger('click').blur(); $("button.active").focus(); } }); $(".slidesjs-play").on("click",function (event) { if (event.handleObj.type === "click") { $(".slidesjs-stop").focus(); } else if(event.handleObj.type === "keydown"){ if (event.which === 13 && $(event.target).hasClass("slidesjs-play")) { $(".slidesjs-stop").focus(); } } }); $(".slidesjs-stop").on("click",function (event) { if (event.handleObj.type === "click") { $(".slidesjs-play").focus(); } else if(event.handleObj.type === "keydown"){ if (event.which === 13 && $(event.target).hasClass("slidesjs-stop")) { $(".slidesjs-play").focus(); } } }); $(".slidesjs-pagination-item").keydown(function(e){ switch (e.which){ case 37: //left arrow key $(".slidesjs-previous.slidesjs-navigation").trigger('click'); e.preventDefault(); break; case 39: //right arrow key $(".slidesjs-next.slidesjs-navigation").trigger('click'); e.preventDefault(); break; default: return; } $(".slidesjs-pagination-item button.active").focus(); }); }); // Start This code is added by iTalent as part of iTrack 1859082 $(document).ready(function(){ $("#tip1").attr("aria-hidden","true").addClass("hidden"); $("#tip2").attr("aria-hidden","true").addClass("hidden"); $(".slidesjs-stop.slidesjs-navigation, .slidesjs-play.slidesjs-navigation").attr('title', ''); $("a#playtitle").focus(function(){ $("#tip1").attr("aria-hidden","false").removeClass("hidden"); }); $("a#playtitle").mouseover(function(){ $("#tip1").attr("aria-hidden","false").removeClass("hidden"); }); $("a#playtitle").blur(function(){ $("#tip1").attr("aria-hidden","true").addClass("hidden"); }); $("a#playtitle").mouseleave(function(){ $("#tip1").attr("aria-hidden","true").addClass("hidden"); }); $("a#play").keydown(function(ev){ if (ev.which ==27) { $("#tip1").attr("aria-hidden","true").addClass("hidden"); ev.preventDefault(); return false; } }); $("a#stoptitle").focus(function(){ $("#tip2").attr("aria-hidden","false").removeClass("hidden"); }); $("a#stoptitle").mouseover(function(){ $("#tip2").attr("aria-hidden","false").removeClass("hidden"); }); $("a#stoptitle").blur(function(){ $("#tip2").attr("aria-hidden","true").addClass("hidden"); }); $("a#stoptitle").mouseleave(function(){ $("#tip2").attr("aria-hidden","true").addClass("hidden"); }); $("a#stoptitle").keydown(function(ev){ if (ev.which ==27) { $("#tip2").attr("aria-hidden","true").addClass("hidden"); ev.preventDefault(); return false; } }); }); // End This code is added by iTalent as part of iTrack 1859082