{"action":"created","issue":{"url":"https://api.github.com/repos/fbiville/liquigraph/issues/77","repository_url":"https://api.github.com/repos/fbiville/liquigraph","labels_url":"https://api.github.com/repos/fbiville/liquigraph/issues/77/labels{/name}","comments_url":"https://api.github.com/repos/fbiville/liquigraph/issues/77/comments","events_url":"https://api.github.com/repos/fbiville/liquigraph/issues/77/events","html_url":"https://github.com/fbiville/liquigraph/issues/77","id":153006420,"number":77,"title":"Allow repeatable / splitable queries for large migrations","user":{"login":"fpavageau","id":800088,"avatar_url":"https://avatars.githubusercontent.com/u/800088?v=3","gravatar_id":"","url":"https://api.github.com/users/fpavageau","html_url":"https://github.com/fpavageau","followers_url":"https://api.github.com/users/fpavageau/followers","following_url":"https://api.github.com/users/fpavageau/following{/other_user}","gists_url":"https://api.github.com/users/fpavageau/gists{/gist_id}","starred_url":"https://api.github.com/users/fpavageau/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fpavageau/subscriptions","organizations_url":"https://api.github.com/users/fpavageau/orgs","repos_url":"https://api.github.com/users/fpavageau/repos","events_url":"https://api.github.com/users/fpavageau/events{/privacy}","received_events_url":"https://api.github.com/users/fpavageau/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/fbiville/liquigraph/labels/enhancement","name":"enhancement","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":10,"created_at":"2016-05-04T13:05:02Z","updated_at":"2016-05-26T11:36:16Z","closed_at":null,"body":"When migrating a large quantity of data, executing all the queries in a single transaction can lead to OutOfMemoryErrors in Neo4j.\r\n\r\nI think this could be mitigated by repeating queries (using `LIMIT` to migrate batches) returning a single boolean value, like the pre-conditions. The query would be run until it returns `false`.\r\n\r\nAnother way could be to use separate \"post-conditions\" to validate whether the query needs to be repeated, to split the responsibilities."},"comment":{"url":"https://api.github.com/repos/fbiville/liquigraph/issues/comments/221847419","html_url":"https://github.com/fbiville/liquigraph/issues/77#issuecomment-221847419","issue_url":"https://api.github.com/repos/fbiville/liquigraph/issues/77","id":221847419,"user":{"login":"fbiville","id":445792,"avatar_url":"https://avatars.githubusercontent.com/u/445792?v=3","gravatar_id":"","url":"https://api.github.com/users/fbiville","html_url":"https://github.com/fbiville","followers_url":"https://api.github.com/users/fbiville/followers","following_url":"https://api.github.com/users/fbiville/following{/other_user}","gists_url":"https://api.github.com/users/fbiville/gists{/gist_id}","starred_url":"https://api.github.com/users/fbiville/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fbiville/subscriptions","organizations_url":"https://api.github.com/users/fbiville/orgs","repos_url":"https://api.github.com/users/fbiville/repos","events_url":"https://api.github.com/users/fbiville/events{/privacy}","received_events_url":"https://api.github.com/users/fbiville/received_events","type":"User","site_admin":false},"created_at":"2016-05-26T11:36:16Z","updated_at":"2016-05-26T11:36:16Z","body":"@fpavageau sounds like a very reasonable change to me: :+1: "}}
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