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https://reviews.apache.org/r/59722/
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Review request for atlas and Madhan Neethiraj.


Bugs: ATLAS-1851
    https://issues.apache.org/jira/browse/ATLAS-1851


Repository: atlas


Description
-------

**Implementation**
- Added additional options to _AtlasImportRequest_.
  - Additional options:
    - _startGuid_
    - _startPosition_
- Added method for percentage calculation to _AtlasEntityStoreV1_.
- Updated logging message to include entity guid, type and position.

**CURL**

Create file with these contents call it _importTransform.json_:
```javascript
{ "options": {
    "startGuid": "bd97c78e-3fa5-4f9c-9f48-3683ca3d1fb1"
    }
}
```javascript


```
curl -g -X POST -u admin:admin -H "Content-Type: multipart/form-data" -H 
"Cache-Control: no-cache" -F request=@../docs/importTransform.json -F 
data=@../docs/Stocks-2.zip "http://localhost:21000/api/atlas/admin/import";
```

Steps to use the behavior:
- Start an import (using the CURL above) that is fairly long, say about 1000+ 
entities. 
- While the import is in progress, stop atlas server (using _atlas_stop.py_).
- From the log file located at _/var/log/atlas/application.log_ get the last 
successfully imported entity GUID or position.
- Update the _importTransform.json_ with the guid.
- Restart import.

You should see that import resumes from where it left off.


**Highlights**
Specify the _startGuid_ option and notice that the operation resumes from the 
correct percentage and not 0%.


Diffs
-----

  intg/src/main/java/org/apache/atlas/model/impexp/AtlasImportRequest.java 
4f2c1fbc 
  
repository/src/main/java/org/apache/atlas/repository/impexp/ImportService.java 
8a7e3585 
  repository/src/main/java/org/apache/atlas/repository/impexp/ZipSource.java 
76451c98 
  
repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasEntityStoreV1.java
 27c0b5d4 
  
repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasEntityStreamForImport.java
 69140e69 
  
repository/src/main/java/org/apache/atlas/repository/store/graph/v1/EntityImportStream.java
 0f711db4 
  
repository/src/test/java/org/apache/atlas/repository/store/graph/v1/AtlasEntityStoreV1BulkImportPercentTest.java
 PRE-CREATION 


Diff: https://reviews.apache.org/r/59722/diff/1/


Testing
-------

**Unit tests**
Added tests to cover the new functionality. Note the usage of mock for _Logger_.

**Volume tests**
- Performed large imports with resume.
- Noted the numbers against baseline. Did not observe significant deviation.

**Functional tests**
- Used common scenarios from test suite.

**Accuracy testing**
- Not done.


Thanks,

Ashutosh Mestry

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