{"action":"created","comment":{"url":"https://api.github.com/repos/mantidproject/mantid/pulls/comments/68023658","id":68023658,"diff_hunk":"@@ -203,12 +203,20 @@ bool MultiPeriodGroupWorker::processGroups(\n   WorkspaceGroup_sptr outputWS = boost::make_shared<WorkspaceGroup>();\n   AnalysisDataService::Instance().addOrReplace(outName, outputWS);\n \n+  double progress_proportion = 1.0 / static_cast<double>(nPeriods);\n   // Loop through all the periods. Create spawned algorithms of the same type as\n   // this to process pairs from the input groups.\n   for (size_t i = 0; i < nPeriods; ++i) {\n     const int periodNumber = static_cast<int>(i + 1);\n-    Algorithm_sptr alg_sptr = API::AlgorithmManager::Instance().createUnmanaged(\n-        sourceAlg->name(), sourceAlg->version());\n+    // use create Child Algorithm that look like this one\n+    Algorithm_sptr alg_sptr = sourceAlg->createChildAlgorithm(\n+        sourceAlg->name(), progress_proportion * periodNumber,\n+        progress_proportion * (1 + periodNumber), sourceAlg->isLogging(),\n+        sourceAlg->version());\n+    // Don't make the new algorithm a child so that it's workspaces are stored\n+    // correctly\n+    alg_sptr->setChild(false);\n+    alg_sptr->setRethrows(true);","path":"Framework/API/src/MultiPeriodGroupWorker.cpp","position":19,"original_position":19,"commit_id":"8aace6a11191e011a4a2bc7cc48d2fc8f705106c","original_commit_id":"8aace6a11191e011a4a2bc7cc48d2fc8f705106c","user":{"login":"FedeMPouzols","id":5257172,"avatar_url":"https://avatars.githubusercontent.com/u/5257172?v=3","gravatar_id":"","url":"https://api.github.com/users/FedeMPouzols","html_url":"https://github.com/FedeMPouzols","followers_url":"https://api.github.com/users/FedeMPouzols/followers","following_url":"https://api.github.com/users/FedeMPouzols/following{/other_user}","gists_url":"https://api.github.com/users/FedeMPouzols/gists{/gist_id}","starred_url":"https://api.github.com/users/FedeMPouzols/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FedeMPouzols/subscriptions","organizations_url":"https://api.github.com/users/FedeMPouzols/orgs","repos_url":"https://api.github.com/users/FedeMPouzols/repos","events_url":"https://api.github.com/users/FedeMPouzols/events{/privacy}","received_events_url":"https://api.github.com/users/FedeMPouzols/received_events","type":"User","site_admin":false},"body":"I see the point in creating the algorithm with `createChildAlgorithm` so the behavior of the progress bar is adequate. But with this we have one more place with the funny sequence of events whereby a child algorithm is ripped off its childhood!\r\nWould `setAlwaysStoreInADS(false)` serve the same purpose as `setChild(false)` and be a bit more clear? Or would there be any undesired difference? As far as I can see what `m_isChild` brings in addition to `m_alwaysStoreInADS` is that it:\r\n- suppresses some logs\r\n- disables workspace locking\r\n","created_at":"2016-06-22T09:44:28Z","updated_at":"2016-06-22T09:44:28Z","html_url":"https://github.com/mantidproject/mantid/pull/16606#discussion_r68023658","pull_request_url":"https://api.github.com/repos/mantidproject/mantid/pulls/16606","_links":{"self":{"href":"https://api.github.com/repos/mantidproject/mantid/pulls/comments/68023658"},"html":{"href":"https://github.com/mantidproject/mantid/pull/16606#discussion_r68023658"},"pull_request":{"href":"https://api.github.com/repos/mantidproject/mantid/pulls/16606"}}},"pull_request":{"url":"https://api.github.com/repos/mantidproject/mantid/pulls/16606","id":73600106,"html_url":"https://github.com/mantidproject/mantid/pull/16606","diff_url":"https://github.com/mantidproject/mantid/pull/16606.diff","patch_url":"https://github.com/mantidproject/mantid/pull/16606.patch","issue_url":"https://api.github.com/repos/mantidproject/mantid/issues/16606","number":16606,"state":"open","locked":false,"title":"Progress reporting for algs with group workspaces","user":{"login":"NickDraper","id":1017173,"avatar_url":"https://avatars.githubusercontent.com/u/1017173?v=3","gravatar_id":"","url":"https://api.github.com/users/NickDraper","html_url":"https://github.com/NickDraper","followers_url":"https://api.github.com/users/NickDraper/followers","following_url":"https://api.github.com/users/NickDraper/following{/other_user}","gists_url":"https://api.github.com/users/NickDraper/gists{/gist_id}","starred_url":"https://api.github.com/users/NickDraper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/NickDraper/subscriptions","organizations_url":"https://api.github.com/users/NickDraper/orgs","repos_url":"https://api.github.com/users/NickDraper/repos","events_url":"https://api.github.com/users/NickDraper/events{/privacy}","received_events_url":"https://api.github.com/users/NickDraper/received_events","type":"User","site_admin":false},"body":"Changed the group workspace handling of algorithms to route the dynamically created workspace progress reporting through the parent algorithm, correctly scaling on the way.\r\n\r\nMergeRuns is a special case that is hadled seperately, but this has been done as well.\r\n\r\n**To test:**\r\n\r\n 1. Run some algorithms with group workspaces.  They should work at least as well as the underlying algorithm reporting does.\r\n 1. look at the underlying issue, that has test python scripts for Rebin, and MergeRuns in the comments #14249 \r\n\r\nFixes #14249 .\r\n\r\nRELEASE NOTES\r\ndocs/source/release/UI.rst\r\n\r\n\r\n---\r\n\r\n#### Reviewer ####\r\n\r\nPlease comment on the following ([full description](http://www.mantidproject.org/Individual_Ticket_Testing)):\r\n\r\n##### Code Review #####\r\n\r\n- [ ] Is the code of an acceptable quality?\r\n- [ ] Does the code conform to the [coding standards](http://www.mantidproject.org/Coding_Standards)? Is it well structured with small focussed classes/methods/functions?\r\n- [ ] Are there unit/system tests in place? Are the unit tests small and test the a class in isolation?\r\n- [ ] If there are changes in the release notes then do they describe the changes appropriately?\r\n\r\n##### Functional Tests #####\r\n\r\n- [ ] Do changes function as described? Add comments below that describe the tests performed?\r\n- [ ] How do the changes handle unexpected situations, e.g. bad input?\r\n- [ ] Has the relevant documentation been added/updated?\r\n- [ ] Is user-facing documentation written in a user-friendly manner?\r\n- [ ] Has developer documentation been updated if required?\r\n\r\n- Does everything look good? Comment with the ship it emoji but don't merge. A member of `@mantidproject/gatekeepers` will take care of it.\r\n","created_at":"2016-06-13T15:58:31Z","updated_at":"2016-06-22T09:44:28Z","closed_at":null,"merged_at":null,"merge_commit_sha":"345de8aeb887fd3ada5cb17f9ce0c53b31bf59f1","assignee":{"login":"FedeMPouzols","id":5257172,"avatar_url":"https://avatars.githubusercontent.com/u/5257172?v=3","gravatar_id":"","url":"https://api.github.com/users/FedeMPouzols","html_url":"https://github.com/FedeMPouzols","followers_url":"https://api.github.com/users/FedeMPouzols/followers","following_url":"https://api.github.com/users/FedeMPouzols/following{/other_user}","gists_url":"https://api.github.com/users/FedeMPouzols/gists{/gist_id}","starred_url":"https://api.github.com/users/FedeMPouzols/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FedeMPouzols/subscriptions","organizations_url":"https://api.github.com/users/FedeMPouzols/orgs","repos_url":"https://api.github.com/users/FedeMPouzols/repos","events_url":"https://api.github.com/users/FedeMPouzols/events{/privacy}","received_events_url":"https://api.github.com/users/FedeMPouzols/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/mantidproject/mantid/milestones/58","html_url":"https://github.com/mantidproject/mantid/milestones/Release%203.8","labels_url":"https://api.github.com/repos/mantidproject/mantid/milestones/58/labels","id":1505614,"number":58,"title":"Release 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