tag:blogger.com,1999:blog-6266231010760265271.post8177815125001319429..comments2024-03-29T01:19:51.547-04:00Comments on Bekwam Blog: Efficient Lookups with Talend Open Studio's Hash ComponentsCarlhttp://www.blogger.com/profile/15013889141640529637noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-6266231010760265271.post-84240974210315405252012-05-17T12:34:19.390-04:002012-05-17T12:34:19.390-04:00Hi Carl, I saw your post 'Manipulating a tHash...Hi Carl, I saw your post 'Manipulating a tHashOutput in Talend Open Studio", thank you. Since I am using 4.2.3 some of the properties of thash's were not there, I guess you should be using a different version, however I am checking TDI-17859 and see if it is having any solution.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6266231010760265271.post-66481430809662445222012-05-17T09:00:24.236-04:002012-05-17T09:00:24.236-04:00Take a look at the Talend JIRA too. If you're...Take a look at the Talend JIRA too. If you're on 4.2.3, this may apply: TDI-17859.Carlhttps://www.blogger.com/profile/15013889141640529637noreply@blogger.comtag:blogger.com,1999:blog-6266231010760265271.post-33867528959404700942012-05-17T07:30:53.142-04:002012-05-17T07:30:53.142-04:00What are the weird errors?What are the weird errors?Carlhttps://www.blogger.com/profile/15013889141640529637noreply@blogger.comtag:blogger.com,1999:blog-6266231010760265271.post-39821478376093569352012-05-16T12:22:50.193-04:002012-05-16T12:22:50.193-04:00Carl, what I need to do to clear the thashinput / ...Carl, what I need to do to clear the thashinput / thashoutput from the memory after using it, the reason I am asking is I am calling multiple jobs in a single job (main job) and I use thashinput/output in all those jobs, while executing the main job I am getting some wierd errors, (if I am execuing the jobs individually with out calling the main job it works fine). Please let me know what to do toclear it from the memory and will try it and see. thank you.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6266231010760265271.post-43603704931326836232012-05-14T13:18:05.091-04:002012-05-14T13:18:05.091-04:00You can implement this job with tReplicate by rout...You can implement this job with tReplicate by routing the main flow from the Business Dates tMSSqlInput component to both of the tMaps. Functionally, you'll get the same results, but won't need the tHashInput initialization subjob.<br /><br />I believe that the hash version is more efficient because it creates fewer Java objects during the main loops (from t*Input on). tHashInput doesn't add code to any of the main loops (there is no main .javajet in Component Designer terms). There is a "new" operator in tReplicate_main.javajet that I think will make a difference.<br /><br />I use tReplicate when I'm producing exactly the same output in a different format. For example, you can use tReplicate to produce two text files with different character sets, UTF-8 and ISO8859_1 (for legacy systems).<br /><br />This isn't a cue to rip out all tReplicates, especially absent any performance problems. But if you have a job with a lot of replicated connections, large memory use, or performance that's degrading with increased input, give the hash components a try.Carlhttps://www.blogger.com/profile/15013889141640529637noreply@blogger.comtag:blogger.com,1999:blog-6266231010760265271.post-31175347082819886052012-05-14T12:33:08.851-04:002012-05-14T12:33:08.851-04:00This blog is a greta resource. Quick question, is...This blog is a greta resource. Quick question, is it more efficient to use the hash tool or the tReplicate for a task like this?Adamhttps://www.blogger.com/profile/13008130859310225940noreply@blogger.com