Actually Grant, I just figured out that is not difficult to setup NTP on those machines. I will go with that for now. Thank you very much
Nikos 2015-03-19 10:26 GMT-04:00 Nick R. Katsipoulakis <[email protected]>: > Hello Grant and thanks for your reply. I am aware of NTP, but I would not > like to go through the process of setting it up in the cluster. Is there > any tool inside Storm that can help me overcome this issue? > > Thank you, > Nick > > 2015-03-19 10:22 GMT-04:00 Grant Overby (groverby) <[email protected]>: > > NTP? >> http://en.wikipedia.org/wiki/Network_Time_Protocol >> >> >> *Grant Overby* >> Software Engineer >> Cisco.com <http://www.cisco.com/> >> [email protected] >> Mobile: *865 724 4910 <865%20724%204910>* >> >> >> >> Think before you print. >> >> This email may contain confidential and privileged material for the sole >> use of the intended recipient. Any review, use, distribution or disclosure >> by others is strictly prohibited. If you are not the intended recipient (or >> authorized to receive for the recipient), please contact the sender by >> reply email and delete all copies of this message. >> >> Please click here >> <http://www.cisco.com/web/about/doing_business/legal/cri/index.html> for >> Company Registration Information. >> >> >> >> >> From: "Nick R. Katsipoulakis" <[email protected]> >> Reply-To: "[email protected]" <[email protected]> >> Date: Thursday, March 19, 2015 at 9:07 AM >> To: "[email protected]" <[email protected]> >> Subject: Distributed logs coordination >> >> Hello all, >> >> I came across the following issue in my cluster and I would like to >> share it with you, in case you have any proposals/solutions: >> >> I am running my Storm (0.9.2) application in a 5 node cluster. Each bolt >> is assigned randomly to one of the available workers and during execution, >> each worker logs performance information. However, it seems that the clocks >> of the machines I am using are skewed (some of them have minutes difference >> between them). For instance, each bolt logs a number of events and also the >> some custom performance metrics. However, when I try to plot all of the >> bolts' metrics in one graph (let's say latency), I see that the time lines >> are not identical. >> >> >> How can I overcome the skewed clocks problem in order to have a single >> time line of events happening in my cluster? Is there a way that I can have >> all my bolts get a time-stamp from a single source? Any tutorials on using >> the metrics framework that comes with Storm? >> >> Thanks, >> Nikos >> >> -- >> Nikolaos Romanos Katsipoulakis, >> University of Pittsburgh, PhD candidate >> > > > > -- > Nikolaos Romanos Katsipoulakis, > University of Pittsburgh, PhD candidate > -- Nikolaos Romanos Katsipoulakis, University of Pittsburgh, PhD candidate
