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It reads them as {@link TriggerStatus} through\n+   * deserialization and then stores them back as {@link TriggerStatusV2} through custom serialization.\n+   */\n+  public void upgrade() throws InterruptedException, TransactionFailureException, IOException,\n+    DatasetManagementException {\n+    initializeScheduleTable();\n+    factory.createExecutor(ImmutableList.of((TransactionAware) table))\n+      .execute(new TransactionExecutor.Subroutine() {\n+        @Override\n+        public void apply() throws Exception {\n+          Row result = table.get(TRIGGER_KEY);\n+          if (!result.isEmpty()) {\n+            boolean upgadedSchedules = false;\n+            for (byte[] bytes : result.getColumns().values()) {\n+              Object triggerObject = SerializationUtils.deserialize(bytes);\n+              if (triggerObject instanceof TriggerStatus) {\n+                TriggerStatus trigger = (TriggerStatus) triggerObject;\n+                persistTrigger(table, trigger.trigger, trigger.state);\n+                upgadedSchedules = true;\n+                LOG.debug(\"Schedule: trigger with key {} upgraded\", trigger.trigger.getKey());","path":"cdap-app-fabric/src/main/java/co/cask/cdap/internal/app/runtime/schedule/store/DatasetBasedTimeScheduleStore.java","position":141,"original_position":141,"commit_id":"5379a57a24e66340b81e1d6c33bc795cb8a038ea","original_commit_id":"5379a57a24e66340b81e1d6c33bc795cb8a038ea","user":{"login":"sagarkapare","id":5713570,"avatar_url":"https://avatars.githubusercontent.com/u/5713570?v=3","gravatar_id":"","url":"https://api.github.com/users/sagarkapare","html_url":"https://github.com/sagarkapare","followers_url":"https://api.github.com/users/sagarkapare/followers","following_url":"https://api.github.com/users/sagarkapare/following{/other_user}","gists_url":"https://api.github.com/users/sagarkapare/gists{/gist_id}","starred_url":"https://api.github.com/users/sagarkapare/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sagarkapare/subscriptions","organizations_url":"https://api.github.com/users/sagarkapare/orgs","repos_url":"https://api.github.com/users/sagarkapare/repos","events_url":"https://api.github.com/users/sagarkapare/events{/privacy}","received_events_url":"https://api.github.com/users/sagarkapare/received_events","type":"User","site_admin":false},"body":"Better to log it as INFO","created_at":"2015-10-30T02:05:09Z","updated_at":"2015-10-30T02:05:09Z","html_url":"https://github.com/caskdata/cdap/pull/4298#discussion_r43465843","pull_request_url":"https://api.github.com/repos/caskdata/cdap/pulls/4298","_links":{"self":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/comments/43465843"},"html":{"href":"https://github.com/caskdata/cdap/pull/4298#discussion_r43465843"},"pull_request":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/4298"}}},"pull_request":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/4298","id":47576518,"html_url":"https://github.com/caskdata/cdap/pull/4298","diff_url":"https://github.com/caskdata/cdap/pull/4298.diff","patch_url":"https://github.com/caskdata/cdap/pull/4298.patch","issue_url":"https://api.github.com/repos/caskdata/cdap/issues/4298","number":4298,"state":"open","locked":false,"title":"CDAP-3733: DatasetBasedTimeScheduleStore store triggers with custom serialization and upgrade for it","user":{"login":"rohitsinha54","id":1472867,"avatar_url":"https://avatars.githubusercontent.com/u/1472867?v=3","gravatar_id":"","url":"https://api.github.com/users/rohitsinha54","html_url":"https://github.com/rohitsinha54","followers_url":"https://api.github.com/users/rohitsinha54/followers","following_url":"https://api.github.com/users/rohitsinha54/following{/other_user}","gists_url":"https://api.github.com/users/rohitsinha54/gists{/gist_id}","starred_url":"https://api.github.com/users/rohitsinha54/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rohitsinha54/subscriptions","organizations_url":"https://api.github.com/users/rohitsinha54/orgs","repos_url":"https://api.github.com/users/rohitsinha54/repos","events_url":"https://api.github.com/users/rohitsinha54/events{/privacy}","received_events_url":"https://api.github.com/users/rohitsinha54/received_events","type":"User","site_admin":false},"body":"- Store triggers with its state through custom serialization of TriggerStatusV2\r\n- Upgraded TriggerStatus to TriggerStatusV2\r\n\r\nIssue: https://issues.cask.co/browse/CDAP-3733\r\n\r\nBuild: http://builds.cask.co/browse/CDAP-DUT2956-6\r\n\r\nTested on Cluster. 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