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ASF GitHub Bot logged work on GOBBLIN-781: ------------------------------------------ Author: ASF GitHub Bot Created on: 24/May/19 21:04 Start Date: 24/May/19 21:04 Worklog Time Spent: 10m Work Description: autumnust commented on pull request #2647: [GOBBLIN-781] Skeleton for GaaS DR mode clean transition URL: https://github.com/apache/incubator-gobblin/pull/2647 Dear Gobblin maintainers, Please accept this PR. I understand that it will not be reviewed until I have checked off all the steps below! A little bit background on this PR: In Gobblin-as-a-Service deployment, there are extreme cases that the whole data center where a GaaS cluster is deployed went down. In that case we will launch another GaaS cluster to handle request-serving and orchestration. To guarantee a valid working state for DR-Nominated GaaS Cluster, we will need to clean certain left-over states. Also, not all `FlowSpec`s would be eligible for running in alternative environment due to data affinity or so. So we provide `SpecStore` an ability to tag certain `FlowSpec`s and only those will be picked up by DR-Nominated cluster to work on. ### JIRA - [x] My PR addresses the following [Gobblin JIRA] - https://issues.apache.org/jira/browse/GOBBLIN-781 ### Description - [x] Here are some details about my PR, including screenshots (if applicable): This PR is mainly solving problems mentioned in background sections by: - Adding "tag" into `MysqlSpecStore`. - Adding `isNominatedDRHanlder ` as a configuration for newly-launched GaaS master node. - Adding logic inside `scheduleSpecsFromCatalog` to pick up tagged `FlowSpec`s in DR-nominated node. This is just a skeleton code for now since the real cancellation features is not yet there. - Fixing some of API in `SpecStore` and deprecated the old method load all `Spec`s into memory. - Some changes in `GobblinServiceManager` to get rid of left-over during prototyping phase. ### Tests - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason: - Unit test for loading `spec`s with tag. ### Commits - [x] My commits all reference JIRA issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)": 1. Subject is separated from body by a blank line 2. Subject is limited to 50 characters 3. Subject does not end with a period 4. Subject uses the imperative mood ("add", not "adding") 5. Body wraps at 72 characters 6. Body explains "what" and "why", not "how" ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 248285) Time Spent: 10m Remaining Estimate: 0h > Clean Flow execution state when DR is enabled: Skeleton > ------------------------------------------------------- > > Key: GOBBLIN-781 > URL: https://issues.apache.org/jira/browse/GOBBLIN-781 > Project: Apache Gobblin > Issue Type: Improvement > Reporter: Lei Sun > Priority: Major > Time Spent: 10m > Remaining Estimate: 0h > -- This message was sent by Atlassian JIRA (v7.6.3#76005)