{"action":"created","issue":{"url":"https://api.github.com/repos/apache/zeppelin/issues/3121","repository_url":"https://api.github.com/repos/apache/zeppelin","labels_url":"https://api.github.com/repos/apache/zeppelin/issues/3121/labels{/name}","comments_url":"https://api.github.com/repos/apache/zeppelin/issues/3121/comments","events_url":"https://api.github.com/repos/apache/zeppelin/issues/3121/events","html_url":"https://github.com/apache/zeppelin/pull/3121","id":349200387,"node_id":"MDExOlB1bGxSZXF1ZXN0MjA3MzczMDIw","number":3121,"title":"[ZEPPELIN-3694] Dynamically change scheduler thread pool size using REST API","user":{"login":"egorklimov","id":6136993,"node_id":"MDQ6VXNlcjYxMzY5OTM=","avatar_url":"https://avatars3.githubusercontent.com/u/6136993?v=4","gravatar_id":"","url":"https://api.github.com/users/egorklimov","html_url":"https://github.com/egorklimov","followers_url":"https://api.github.com/users/egorklimov/followers","following_url":"https://api.github.com/users/egorklimov/following{/other_user}","gists_url":"https://api.github.com/users/egorklimov/gists{/gist_id}","starred_url":"https://api.github.com/users/egorklimov/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/egorklimov/subscriptions","organizations_url":"https://api.github.com/users/egorklimov/orgs","repos_url":"https://api.github.com/users/egorklimov/repos","events_url":"https://api.github.com/users/egorklimov/events{/privacy}","received_events_url":"https://api.github.com/users/egorklimov/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-08-09T16:26:28Z","updated_at":"2018-08-10T07:40:59Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/apache/zeppelin/pulls/3121","html_url":"https://github.com/apache/zeppelin/pull/3121","diff_url":"https://github.com/apache/zeppelin/pull/3121.diff","patch_url":"https://github.com/apache/zeppelin/pull/3121.patch"},"body":"### What is this PR for?\r\n\r\nIt would be nice if we could change thread pool size for scheduler dynamically.\r\n\r\n### Using this feature:\r\n1. Create file `quartz.properties` from default file located in `org.quartz` and add them to `conf` directory\r\n2. In `quartz.properties` set `org.quartz.threadPool.class` to `org.apache.zeppelin.scheduler.dynamic_pool.impl.ExecutorServiceThreadPool`\r\n\r\nOtherwise you will get message \"Thread pool size is constant.\"\r\n\r\n### What type of PR is it?\r\nImprovement\r\n\r\n### What is the Jira issue?\r\n* issue on Jira https://issues.apache.org/jira/browse/ZEPPELIN-3694\r\n\r\n### How should this be tested?\r\n* Tests added\r\n* Tested manually\r\n* [CI pass](https://travis-ci.org/TinkoffCreditSystems/zeppelin/builds/414155839)\r\n\r\n### Screenshots\r\nFirstly when thread pool size equals `1` notes wait for each other, but when scheduler thread pool size changed to `2` they start to work in parallel.\r\n\r\n![cron mp4](https://user-images.githubusercontent.com/6136993/43912629-77707ad4-9c0b-11e8-9d6c-62cbc67568a8.gif)\r\n\r\n\r\n\r\n### Questions:\r\n* Does the licenses files need update?  No\r\nI added sources of [quartz-dynamic-pool](https://github.com/epiresdasilva/quartz-dynamic-pool) developed by @epiresdasilva, because this repo isn't included in http://mvnrepository.com\r\n* Is there breaking changes for older versions? No\r\n* Does this needs documentation? Yes, REST API docs updated\r\n"},"comment":{"url":"https://api.github.com/repos/apache/zeppelin/issues/comments/412002862","html_url":"https://github.com/apache/zeppelin/pull/3121#issuecomment-412002862","issue_url":"https://api.github.com/repos/apache/zeppelin/issues/3121","id":412002862,"node_id":"MDEyOklzc3VlQ29tbWVudDQxMjAwMjg2Mg==","user":{"login":"egorklimov","id":6136993,"node_id":"MDQ6VXNlcjYxMzY5OTM=","avatar_url":"https://avatars3.githubusercontent.com/u/6136993?v=4","gravatar_id":"","url":"https://api.github.com/users/egorklimov","html_url":"https://github.com/egorklimov","followers_url":"https://api.github.com/users/egorklimov/followers","following_url":"https://api.github.com/users/egorklimov/following{/other_user}","gists_url":"https://api.github.com/users/egorklimov/gists{/gist_id}","starred_url":"https://api.github.com/users/egorklimov/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/egorklimov/subscriptions","organizations_url":"https://api.github.com/users/egorklimov/orgs","repos_url":"https://api.github.com/users/egorklimov/repos","events_url":"https://api.github.com/users/egorklimov/events{/privacy}","received_events_url":"https://api.github.com/users/egorklimov/received_events","type":"User","site_admin":false},"created_at":"2018-08-10T07:40:59Z","updated_at":"2018-08-10T07:40:59Z","author_association":"CONTRIBUTOR","body":"CI pass https://travis-ci.org/TinkoffCreditSystems/zeppelin/builds/414155839"}}
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