{"comment":{"url":"https://api.github.com/repos/electrum/presto/comments/14861022","html_url":"https://github.com/electrum/presto/commit/2f8108480e46ff7c6dc0beb94f297ff001040e09#commitcomment-14861022","id":14861022,"user":{"login":"nileema","id":1034143,"avatar_url":"https://avatars.githubusercontent.com/u/1034143?v=3","gravatar_id":"","url":"https://api.github.com/users/nileema","html_url":"https://github.com/nileema","followers_url":"https://api.github.com/users/nileema/followers","following_url":"https://api.github.com/users/nileema/following{/other_user}","gists_url":"https://api.github.com/users/nileema/gists{/gist_id}","starred_url":"https://api.github.com/users/nileema/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nileema/subscriptions","organizations_url":"https://api.github.com/users/nileema/orgs","repos_url":"https://api.github.com/users/nileema/repos","events_url":"https://api.github.com/users/nileema/events{/privacy}","received_events_url":"https://api.github.com/users/nileema/received_events","type":"User","site_admin":false},"position":21,"line":203,"path":"presto-raptor/src/main/java/com/facebook/presto/raptor/RaptorSplitManager.java","commit_id":"2f8108480e46ff7c6dc0beb94f297ff001040e09","created_at":"2015-12-08T22:55:15Z","updated_at":"2015-12-08T22:55:15Z","body":"This makes an existing problem much worse. If a worker is not available in discovery at the moment the call is made (due to gc or being super busy on the CPU) we will fail queries. We should have higher tolerance for this. We can do this as a separate PR, but I would at least count the number of times this happens, so that we can monitor this. "}}