ASF GitHub Bot logged work on GOBBLIN-861:

                Author: ASF GitHub Bot
            Created on: 16/Aug/19 01:29
            Start Date: 16/Aug/19 01:29
    Worklog Time Spent: 10m 
      Work Description: ZihanLi58 commented on pull request #2716: 
[GOBBLIN-861]Skip getPartition() call to Hive Metastore when a partition 
already e…
URL: https://github.com/apache/incubator-gobblin/pull/2716
   …xists GOBBLIN-861
   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
   - [ ] 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-861
   ### Description
   - [ ] Here are some details about my PR, including screenshots (if 
   Add a subclass of HiveMetaStoreBasedRegister to skip compute diff when the 
partition already exists.
   ### Tests
   - [ ] My PR adds the following unit tests __OR__ does not need testing for 
this extremely good reason:
   Test streaming job to make sure hove registration works well
   ### Commits
   - [ ] 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 
       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: 295926)
            Time Spent: 10m
    Remaining Estimate: 0h

> Skip getPartition() call to Hive Metastore when a partition already exists
> --------------------------------------------------------------------------
>                 Key: GOBBLIN-861
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-861
>             Project: Apache Gobblin
>          Issue Type: Task
>          Components: hive-registration
>            Reporter: Zihan Li
>            Assignee: Abhishek Tiwari
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
> Currently, we compute a diff between the current partition and an already 
> registered partition when a partition has already been registered in Hive. 
> This is done by calling getPartition() on the Hive metastore client, which 
> can be expensive. Since no time-varying attributes are stored in a Hive 
> partition, diff computation (and getPartition() call) can be skipped when a 
> partition already exists.

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