{"action":"created","comment":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/comments/39115041","id":39115041,"diff_hunk":"@@ -0,0 +1,273 @@\n+/*\n+ * Copyright © 2015 Cask Data, Inc.\n+ *\n+ * Licensed under the Apache License, Version 2.0 (the \"License\"); you may not\n+ * use this file except in compliance with the License. You may obtain a copy of\n+ * the License at\n+ *\n+ * http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT\n+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\n+ * License for the specific language governing permissions and limitations under\n+ * the License.\n+ */\n+\n+package co.cask.cdap.data2.metadata.lineage;\n+\n+import co.cask.cdap.api.common.Bytes;\n+import co.cask.cdap.api.dataset.lib.AbstractDataset;\n+import co.cask.cdap.api.dataset.table.Row;\n+import co.cask.cdap.api.dataset.table.Scanner;\n+import co.cask.cdap.api.dataset.table.Table;\n+import co.cask.cdap.common.app.RunIds;\n+import co.cask.cdap.data2.dataset2.lib.table.MDSKey;\n+import co.cask.cdap.proto.Id;\n+import co.cask.cdap.proto.ProgramType;\n+import com.google.common.collect.ImmutableSet;\n+import org.apache.twill.api.RunId;\n+import org.slf4j.Logger;\n+import org.slf4j.LoggerFactory;\n+\n+import java.util.HashMap;\n+import java.util.HashSet;\n+import java.util.Map;\n+import java.util.Set;\n+import java.util.concurrent.TimeUnit;\n+import javax.annotation.Nullable;\n+\n+/**\n+ * Dataset to store/retrieve Dataset accesses of a Program.","path":"cdap-data-fabric/src/main/java/co/cask/cdap/data2/metadata/lineage/LineageDataset.java","position":41,"original_position":41,"commit_id":"f73d979939d1e2cbc75c8b2e6bcbf8184833e421","original_commit_id":"f73d979939d1e2cbc75c8b2e6bcbf8184833e421","user":{"login":"poornachandra","id":3181212,"avatar_url":"https://avatars.githubusercontent.com/u/3181212?v=3","gravatar_id":"","url":"https://api.github.com/users/poornachandra","html_url":"https://github.com/poornachandra","followers_url":"https://api.github.com/users/poornachandra/followers","following_url":"https://api.github.com/users/poornachandra/following{/other_user}","gists_url":"https://api.github.com/users/poornachandra/gists{/gist_id}","starred_url":"https://api.github.com/users/poornachandra/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/poornachandra/subscriptions","organizations_url":"https://api.github.com/users/poornachandra/orgs","repos_url":"https://api.github.com/users/poornachandra/repos","events_url":"https://api.github.com/users/poornachandra/events{/privacy}","received_events_url":"https://api.github.com/users/poornachandra/received_events","type":"User","site_admin":false},"body":"Done","created_at":"2015-09-10T00:56:15Z","updated_at":"2015-09-10T00:56:15Z","html_url":"https://github.com/caskdata/cdap/pull/3855#discussion_r39115041","pull_request_url":"https://api.github.com/repos/caskdata/cdap/pulls/3855","_links":{"self":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/comments/39115041"},"html":{"href":"https://github.com/caskdata/cdap/pull/3855#discussion_r39115041"},"pull_request":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/3855"}}},"pull_request":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/3855","id":44519961,"html_url":"https://github.com/caskdata/cdap/pull/3855","diff_url":"https://github.com/caskdata/cdap/pull/3855.diff","patch_url":"https://github.com/caskdata/cdap/pull/3855.patch","issue_url":"https://api.github.com/repos/caskdata/cdap/issues/3855","number":3855,"state":"open","locked":false,"title":"CDAP-3519 First cut of Lineage computation based on Dataset accesses by a Program","user":{"login":"poornachandra","id":3181212,"avatar_url":"https://avatars.githubusercontent.com/u/3181212?v=3","gravatar_id":"","url":"https://api.github.com/users/poornachandra","html_url":"https://github.com/poornachandra","followers_url":"https://api.github.com/users/poornachandra/followers","following_url":"https://api.github.com/users/poornachandra/following{/other_user}","gists_url":"https://api.github.com/users/poornachandra/gists{/gist_id}","starred_url":"https://api.github.com/users/poornachandra/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/poornachandra/subscriptions","organizations_url":"https://api.github.com/users/poornachandra/orgs","repos_url":"https://api.github.com/users/poornachandra/repos","events_url":"https://api.github.com/users/poornachandra/events{/privacy}","received_events_url":"https://api.github.com/users/poornachandra/received_events","type":"User","site_admin":false},"body":"JIRA - https://issues.cask.co/browse/CDAP-3519\r\n\r\nTODO: Will add more extensive tests in a follow-up PR.\r\n","created_at":"2015-09-09T07:54:28Z","updated_at":"2015-09-10T00:56:15Z","closed_at":null,"merged_at":null,"merge_commit_sha":"8b2fb17315f8f6c005517ee532c0e26e750feb7f","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/caskdata/cdap/pulls/3855/commits","review_comments_url":"https://api.github.com/repos/caskdata/cdap/pulls/3855/comments","review_comment_url":"https://api.github.com/repos/caskdata/cdap/pulls/comments{/number}","comments_url":"https://api.github.com/repos/caskdata/cdap/issues/3855/comments","statuses_url":"https://api.github.com/repos/caskdata/cdap/statuses/f73d979939d1e2cbc75c8b2e6bcbf8184833e421","head":{"label":"caskdata:feature/lineage-dataset","ref":"feature/lineage-dataset","sha":"f73d979939d1e2cbc75c8b2e6bcbf8184833e421","user":{"login":"caskdata","id":8123023,"avatar_url":"https://avatars.githubusercontent.com/u/8123023?v=3","gravatar_id":"","url":"https://api.github.com/users/caskdata","html_url":"https://github.com/caskdata","followers_url":"https://api.github.com/users/caskdata/followers","following_url":"https://api.github.com/users/caskdata/following{/other_user}","gists_url":"https://api.github.com/users/caskdata/gists{/gist_id}","starred_url":"https://api.github.com/users/caskdata/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/caskdata/subscriptions","organizations_url":"https://api.github.com/users/caskdata/orgs","repos_url":"https://api.github.com/users/caskdata/repos","events_url":"https://api.github.com/users/caskdata/events{/privacy}","received_events_url":"https://api.github.com/users/caskdata/received_events","type":"Organization","site_admin":false},"repo":{"id":22542759,"name":"cdap","full_name":"caskdata/cdap","owner":{"login":"caskdata","id":8123023,"avatar_url":"https://avatars.githubusercontent.com/u/8123023?v=3","gravatar_id":"","url":"https://api.github.com/users/caskdata","html_url":"https://github.com/caskdata","followers_url":"https://api.github.com/users/caskdata/followers","following_url":"https://api.github.com/users/caskdata/following{/other_user}","gists_url":"https://api.github.com/users/caskdata/gists{/gist_id}","starred_url":"https://api.github.com/users/caskdata/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/caskdata/subscriptions","organizations_url":"https://api.github.com/users/caskdata/orgs","repos_url":"https://api.github.com/users/caskdata/repos","events_url":"https://api.github.com/users/caskdata/events{/privacy}","received_events_url":"https://api.github.com/users/caskdata/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/caskdata/cdap","description":"Cask 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