[jira] [Work logged] (GOBBLIN-1129) clean up staging table created by avro2orc pipeline

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

     [ https://issues.apache.org/jira/browse/GOBBLIN-1129?focusedWorklogId=427793&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-427793 ]

ASF GitHub Bot logged work on GOBBLIN-1129:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/Apr/20 19:06
            Start Date: 27/Apr/20 19:06
    Worklog Time Spent: 10m 
      Work Description: yukuai518 opened a new pull request #2970:
URL: https://github.com/apache/incubator-gobblin/pull/2970


   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. For example, "[GOBBLIN-XXX] My Gobblin PR"
       - https://issues.apache.org/jira/browse/GOBBLIN-1129
   
   
   ### Description
   - [x] Here are some details about my PR, including screenshots (if applicable):
   During the avro2orc conversion, many staging tables are created, they are not cleaned up due to the pipeline failure, and next execution doesn't take care of the clean up, which caused the staging table taking many spaces in hive metastore.
   
   ### Tests
   - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason:
   
   
   ### 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: 427793)
    Remaining Estimate: 0h
            Time Spent: 10m

> clean up staging table created by avro2orc pipeline
> ---------------------------------------------------
>
>                 Key: GOBBLIN-1129
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-1129
>             Project: Apache Gobblin
>          Issue Type: Improvement
>            Reporter: Kuai Yu
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> During the avro2orc conversion, many staging tables are created, they are not cleaned up due to the pipeline failure, and next execution doesn't take care of the clean up, which caused the staging table taking many spaces in hive metastore.



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