{"action":"created","issue":{"url":"https://api.github.com/repos/apache/spark/issues/20685","repository_url":"https://api.github.com/repos/apache/spark","labels_url":"https://api.github.com/repos/apache/spark/issues/20685/labels{/name}","comments_url":"https://api.github.com/repos/apache/spark/issues/20685/comments","events_url":"https://api.github.com/repos/apache/spark/issues/20685/events","html_url":"https://github.com/apache/spark/pull/20685","id":300564007,"number":20685,"title":"[SPARK-23524] Big local shuffle blocks should not be checked for corruption.","user":{"login":"jinxing64","id":4058918,"avatar_url":"https://avatars0.githubusercontent.com/u/4058918?v=4","gravatar_id":"","url":"https://api.github.com/users/jinxing64","html_url":"https://github.com/jinxing64","followers_url":"https://api.github.com/users/jinxing64/followers","following_url":"https://api.github.com/users/jinxing64/following{/other_user}","gists_url":"https://api.github.com/users/jinxing64/gists{/gist_id}","starred_url":"https://api.github.com/users/jinxing64/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jinxing64/subscriptions","organizations_url":"https://api.github.com/users/jinxing64/orgs","repos_url":"https://api.github.com/users/jinxing64/repos","events_url":"https://api.github.com/users/jinxing64/events{/privacy}","received_events_url":"https://api.github.com/users/jinxing64/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2018-02-27T10:03:02Z","updated_at":"2018-02-28T06:21:37Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/20685","html_url":"https://github.com/apache/spark/pull/20685","diff_url":"https://github.com/apache/spark/pull/20685.diff","patch_url":"https://github.com/apache/spark/pull/20685.patch"},"body":"## What changes were proposed in this pull request?\r\n\r\nIn current code, all local blocks will be checked for corruption no matter it's big or not.  The reasons are as below:\r\n\r\nSize in FetchResult for local block is set to be 0 (https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L327)\r\nSPARK-4105 meant to only check the small blocks(size<maxBytesInFlight/3), but for reason 1, below check will be invalid. https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L420\r\n\r\nWe can fix this and avoid the OOM.\r\n\r\n## How was this patch tested?\r\n\r\nUT added"},"comment":{"url":"https://api.github.com/repos/apache/spark/issues/comments/369134635","html_url":"https://github.com/apache/spark/pull/20685#issuecomment-369134635","issue_url":"https://api.github.com/repos/apache/spark/issues/20685","id":369134635,"user":{"login":"AmplabJenkins","id":4031291,"avatar_url":"https://avatars3.githubusercontent.com/u/4031291?v=4","gravatar_id":"","url":"https://api.github.com/users/AmplabJenkins","html_url":"https://github.com/AmplabJenkins","followers_url":"https://api.github.com/users/AmplabJenkins/followers","following_url":"https://api.github.com/users/AmplabJenkins/following{/other_user}","gists_url":"https://api.github.com/users/AmplabJenkins/gists{/gist_id}","starred_url":"https://api.github.com/users/AmplabJenkins/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AmplabJenkins/subscriptions","organizations_url":"https://api.github.com/users/AmplabJenkins/orgs","repos_url":"https://api.github.com/users/AmplabJenkins/repos","events_url":"https://api.github.com/users/AmplabJenkins/events{/privacy}","received_events_url":"https://api.github.com/users/AmplabJenkins/received_events","type":"User","site_admin":false},"created_at":"2018-02-28T06:21:37Z","updated_at":"2018-02-28T06:21:37Z","author_association":"NONE","body":"Test PASSed.\nRefer to this link for build results (access rights to CI server needed): \nhttps://amplab.cs.berkeley.edu/jenkins//job/testing-k8s-prb-make-spark-distribution/1132/\nTest PASSed."}}
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