{"action":"created","issue":{"url":"https://api.github.com/repos/apache/spark/issues/13648","repository_url":"https://api.github.com/repos/apache/spark","labels_url":"https://api.github.com/repos/apache/spark/issues/13648/labels{/name}","comments_url":"https://api.github.com/repos/apache/spark/issues/13648/comments","events_url":"https://api.github.com/repos/apache/spark/issues/13648/events","html_url":"https://github.com/apache/spark/pull/13648","id":160042594,"number":13648,"title":"[SQL][DOC][minor] document the contract of encoder serializer expressions","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2016-06-13T20:54:26Z","updated_at":"2016-06-13T22:52:50Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/13648","html_url":"https://github.com/apache/spark/pull/13648","diff_url":"https://github.com/apache/spark/pull/13648.diff","patch_url":"https://github.com/apache/spark/pull/13648.patch"},"body":"## What changes were proposed in this pull request?\r\n\r\nIn our encoder framework, we imply that serializer expressions should use `BoundReference` to refer to the input object, and a lot of codes depend on this contract(e.g. ExpressionEncoder.tuple).  This PR adds some document and assert in `ExpressionEncoder` to make it clearer.\r\n\r\n\r\n## How was this patch tested?\r\n\r\nexisting tests\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/apache/spark/issues/comments/225732436","html_url":"https://github.com/apache/spark/pull/13648#issuecomment-225732436","issue_url":"https://api.github.com/repos/apache/spark/issues/13648","id":225732436,"user":{"login":"SparkQA","id":8108735,"avatar_url":"https://avatars.githubusercontent.com/u/8108735?v=3","gravatar_id":"","url":"https://api.github.com/users/SparkQA","html_url":"https://github.com/SparkQA","followers_url":"https://api.github.com/users/SparkQA/followers","following_url":"https://api.github.com/users/SparkQA/following{/other_user}","gists_url":"https://api.github.com/users/SparkQA/gists{/gist_id}","starred_url":"https://api.github.com/users/SparkQA/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SparkQA/subscriptions","organizations_url":"https://api.github.com/users/SparkQA/orgs","repos_url":"https://api.github.com/users/SparkQA/repos","events_url":"https://api.github.com/users/SparkQA/events{/privacy}","received_events_url":"https://api.github.com/users/SparkQA/received_events","type":"User","site_admin":false},"created_at":"2016-06-13T22:52:50Z","updated_at":"2016-06-13T22:52:50Z","body":"**[Test build #60431 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60431/consoleFull)** for PR 13648 at commit [`cdda303`](https://github.com/apache/spark/commit/cdda303ed624aaf3389fb190ff8c473f06afa681).\n * This patch passes all tests.\n * This patch merges cleanly.\n * This patch adds no public classes."}}
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