[jira] [Work logged] (GOBBLIN-763) Support fields removal for compaction dedup key schema

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GOBBLIN-763?focusedWorklogId=236625&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-236625 ]

ASF GitHub Bot logged work on GOBBLIN-763:
------------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/May/19 23:08
            Start Date: 02/May/19 23:08
    Worklog Time Spent: 10m 
      Work Description: zxcware commented on pull request #2627: [GOBBLIN-763] Support fields removal for compaction dedup key schema
URL: https://github.com/apache/incubator-gobblin/pull/2627
 
 
   …entation
   
   Dear Gobblin maintainers,
   
   Please accept this PR. I understand that it will not be reviewed until I have checked off all the steps below!
   
   
   ### JIRA
   - [x] My PR addresses the following [Gobblin JIRA](https://issues.apache.org/jira/browse/GOBBLIN/) issues and references them in the PR title.
       - https://issues.apache.org/jira/browse/GOBBLIN-763
   
   
   ### Description
   - [x] Here are some details about my PR:
   - Remove fields, specified by configuration `compaction.job.key.fieldBlacklist`, while computing compaction dedup key schema
   - Fix incorrect `AvroUtils.removeUncomparableFields` implementation, which only keeps the first field of any schema, dropping all other fields which have the same schema. 
   
   ### Tests
   - [x] My PR adds the following unit tests:
   - `CompactionJobConfiguratorTest.testKeyFieldBlacklist`
   
   ### 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"
   
   
 
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 236625)
            Time Spent: 10m
    Remaining Estimate: 0h

> Support fields removal for compaction dedup key schema
> ------------------------------------------------------
>
>                 Key: GOBBLIN-763
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-763
>             Project: Apache Gobblin
>          Issue Type: Task
>            Reporter: Zhixiong Chen
>            Assignee: Zhixiong Chen
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> - Remove fields, specified by configuration `compaction.job.key.fieldBlacklist`, while computing compaction dedup key schema
> - Fix incorrect `AvroUtils.removeUncomparableFields` implementation, which only keeps the first field of any schema, dropping all other fields which have the same schema. 



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