Bulk Loader Process

Overview

• The Bulk Loader is a process that is used to add several new addresses to the EAS at one time.
• There are several stages that make up the Bulk Loader process, outlined below in Summary and Details.

 Some of the stages are run only once per Bulk Loader process.

 Some of the stages are run one or more times in batches.

Summary of Bulk Loader Stages

Details for each Bulk Loader Stage

Stage 1 - Import and parse reference dataset (Optional)

This optional stage is run once per Bulk Loader process. This stage can be skipped if the reference dataset is already available or if the optional 'filter by reference' step is skipped.

• Step 1.1 - Import reference dataset

1. Script Name (*) csv2pg.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/csv2pg.py
3. Important arguments
   1. input_file - The relative path to the raw CSV file.
   2. output_table - The name of the table for the imported records.
4. Example usage

   1. Import CSV file into PostgreSQL table (^++<odbc>)

      csv2pg

      python csv2pg.py 
        --odbc_server=<odbc-server> -- Name or IP address of the database server, e.g. localhost
        --odbc_port=<odbc-port> -- Port of the database server, e.g. 5432
        --odbc_database=<odbc-database> -- Name of the database, e.g. awgdb
        --odbc_uid=<odbc-uid> -- Database user name
        --odbc_pwd=<odbc-pwd> -- Database user password
        --input_file=./path/to/raw_reference_file.csv
        --output_table=reference_raw

5. Output table
   1. This step generates a new table. The name of the new table is passed as a required command line argument.
6. Output fields
   1. All columns in the input CSV file are imported as fields in the new table.
   2. sfgisgapid: a new serial, not null, primary key
7. Artifacts (**)
   1. reference_raw.csv - The input CSV table serves as the artifact for this step.

• Step 1.2 - Parse reference dataset

1. Script Name (*) parse_address_table.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/parse_address_table.py
3. Important arguments
   1. address_column: Name of address field. Required.
   2. city_column: Name of city field. Optional.
   3. state_column: Name of state field. Optional.
   4. zip_column: Name of ZIP Code field. Optional.
   5. output_table: Name of the output table. Required.
4. Example usage

   1. Parse address table (^++<odbc>)

      parse_address_table.py

      python parse_address_table.py
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --address_table=reference_raw 
        --primary_key=sfgisgapid 
        --address_column=address 
        --city_column=city 
        --state_column=state 
        --zip_column=zip 
        --output_table=reference_parsed 
        --output_report_file=./output/reference.xlsx 
        --limit=-1

5. Output table
   1. This step generates a new table. The new table contains all of the fields and records of the input table with additional fields noted below.
6. Output fields
   1. The output consists of a field for every kind of parsed address part that is generated by the parsing tool, Parserator. It also contains additional concatenated fields as defined in the FGDC's United States Thoroughfare, Landmark, and Postal Address Data Standard as well as metadata fields.
      
      1. address_to_parse character varying(255)
      2. address_number bigint
      3. address_number_suffix character varying(255)
      4. street_name_pre_directional character varying(255)
      5. street_name_pre_type character varying(255)
      6. street_name character varying(255)
      7. street_name_post_type character varying(255)
      8. street_name_post_directional character varying(255)
      9. subaddress_type character varying(255)
      10. subaddress_identifier character varying(255)
      11. state_name character varying(255)
      12. zip_code character varying(255)
      13. complete_address_number character varying(255)
      14. complete_street_name character varying(255)
      15. complete_subaddress character varying(255)
      16. complete_place_name character varying(255)
      17. delivery_address_with_unit character varying(255)
      18. delivery_address_without_unit character varying(255)
      19. parsed_address character varying(1000)
      20. parser_had_issues boolean
      21. parser_message character varying(2000)
      22. parserator_tag character varying(255)
      23. address_number_parity character varying(255)
      24. counter integer
7. Artifacts (**)
   1. reference_parsed.csv - Export the new table, e.g. reference_parsed, as a CSV, e.g. reference_parsed.csv, and archive in the network folder dedicated to artifacts for the Bulk Loader iteration.

Stage 2 - Import, parse and filter source dataset

This stage is run once per Bulk Loader process. This stage involves importing, parsing and filtering the dataset. The result will be a dataset that will be geocoded in Stage 3.

• Step 2.1 - Import source dataset

1. Script Name (*) csv2pg.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/csv2pg.py
3. Important arguments
   1. input_file: The relative path to the raw CSV file.
   2. output_table: The name of the table for the imported records.
4. Example usage

   1. Import CSV file into PostgreSQL table (^++<odbc>)

      csv2pg

      python csv2pg.py 
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --input_file=./path/to/raw_source_file.csv 
        --output_table=addresses_raw

5. Output table
   1. This step generates a new table. The name of the new table is passed as a required command line argument.
6. Output fields
   1. All columns in the input CSV file are imported as fields in the new table.
   2. sfgisgapid: a new serial, not null, primary key
7. Artifacts (**)
   1. addresses_raw.csv - The input CSV table serves as the artifact for this step.

• Step 2.2 - Exclude from source dataset where address_number has range

1. Create Output Tables
   

   1. addresses_no_range 

      addresses_no_range

      CREATE TABLE addresses_no_range AS SELECT * FROM addresses_raw WHERE NOT add_number LIKE '%-%';

   2. addresses_with_range 

      addresses_with_range

      CREATE TABLE addresses_with_range AS SELECT * FROM addresses_raw WHERE add_number LIKE '%-%';

2. Artifacts (**)
   1. addresses_no_range.csv - This is an archive of the records that made it past the filter to the next step.
   2. addresses_with_range.csv - This is an archive of the records that did not make it past the filter. This artifact is part of the exclusion set of addresses that are set aside for later review.

• Step 2.3 - Parse source dataset

1. Script Name (*) parse_address_table.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/parse_address_table.py
3. Important arguments
   1. address_column: Name of address field. Required.
   2. city_column: Name of city field. Optional.
   3. state_column: Name of state field. Optional.
   4. zip_column: Name of ZIP Code field. Optional.
   5. output_table: Name of the output table. Required.
4. Example usage

   1. Parse address table (^++<odbc>)

      parse_address_table

      python parse_address_table.py 
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --address_table=addresses_no_range 
        --primary_key=sfgisgapid 
        --address_column=address 
        --city_column=city 
        --state_column=state 
        --zip_column=zip 
        --output_table=addresses_parsed 
        --output_report_file=./output/source_report.xlsx 
        --limit=-1

5. Output table
   1. This step generates a new table. The new table contains all of the fields and records of the input table with additional fields noted below.
6. Output fields
   1. The output consists of a field for every kind of parsed address part that is generated by the parsing tool, Parserator. It also contains additional concatenated fields as defined in the FGDC's United States Thoroughfare, Landmark, and Postal Address Data Standard as well as metadata fields. See also Step 1.2 Output Fields.
7. Artifacts (**)
   1. addresses_parsed.csv: Export the new table, e.g. addresses_parsed, as a CSV, e.g. addresses_parsed.csv, and archive in the network folder dedicated to artifacts for the Bulk Loader iteration.

• Step 2.4 - Exclude addresses where street_name_post_direction is not blank and corresponding streets

• The Bulk Loader is unable to correctly import addresses that contain a post directional value. As such these addresses as well as all corresponding addresses without a post directional value must be filtered out of the dataset.
• See also Issue 168, Provide for street names that have a post directional.

1. Script Name (*) remove_postdirectionals.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/remove_postdirectionals.py
3. Important arguments
   1. output_table: The name of the table for the filtered records.
4. Example usage

   1. Remove records with post directional values  (^++<odbc>)

      remove_postdirectionals

      python remove_postdirectionals.py 
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --address_table=addresses_parsed 
        --output_table=addresses_no_post_dir 
        --output_report_file=./output/source_report.xlsx 
        --limit=-1

   2. Create table addresses_with_post_dir

      addresses_with_post_dir

      CREATE TABLE addresses_with_post_dir AS SELECT * FROM addresses_parsed WHERE NOT id IN (SELECT id FROM addresses_no_post_dir);

5. Output table
   1. This step generates a new table. The new table contains all of the fields and records of the input table excluding any that have a post direction value and corresponding addresses with streets without the post direction.
6. Artifacts (**)
   1. addresses_no_post_dir.csv - This is an archive of the records that made it past the filter to the next step.
   2. addresses_with_post_dir.csv - This is an archive of the records that did not make it past the filter. This artifact is part of the exclusion set of addresses that are set aside for later review.

• Step 2.5 - Exclude addresses not in reference (Optional)

 This optional step excludes from the source dataset any addresses that are not also found in the parsed reference dataset.

 For an understanding on how this step handles duplicates in either the source or reference, see the comments in EAS Issue 281, Refine the filtering regime for address data to be bulk-loaded .

1. Script Name (*) is_address_in_reference.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/is_address_in_reference.py
3. Important arguments
   1. source_output_field - The name of a new integer field that will store the results of the step.
4. Example usage

   1. Add field to flag if address is found in reference  (^++<odbc>)

      is_address_in_reference

      python is_address_in_reference.py 
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --source_table=addresses_no_post_dir
        --reference_table=reference_parsed 
        --source_pk=id 
        --reference_pk=id 
        --source_address_number=address_number 
        --source_address_number_suffix=address_number_suffix 
        --source_street_name_pre_directional=street_name_pre_directional 
        --source_street_name_pre_type=street_name_pre_type  
        --source_street_name=street_name 
        --source_street_name_post_type=street_name_post_type 
        --source_street_name_post_directional=street_name_post_directional 
        --source_subaddress_type=subaddress_type 
        --source_subaddress_identifier=subaddress_identifier 
        --source_place_name=place_name 
        --reference_address_number=address_number 
        --reference_address_number_suffix=address_number_suffix 
        --reference_street_name_pre_directional=street_name_pre_directional 
        --reference_street_name_pre_type=street_name_pre_type 
        --reference_street_name=street_name 
        --reference_street_name_post_type=street_name_post_type 
        --reference_street_name_post_directional=street_name_post_directional 
        --reference_subaddress_type=subaddress_type 
        --reference_subaddress_identifier=subaddress_identifier 
        --reference_place_name=place_name 
        --source_output_field=in_reference 
        --limit=-1

   2. Create and archive table addresses_in_reference

      addresses_in_reference

      CREATE TABLE addresses_in_reference AS SELECT * FROM addresses_no_post_dir WHERE in_reference = 1;

   3. Create and archive table addresses_not_in_reference

      addresses_not_in_reference

      CREATE TABLE addresses_not_in_reference AS SELECT * FROM addresses_no_post_dir WHERE in_reference = 0;

5. Output table
   1. This step generates a new table. The name of the new table is passed as a required command line argument.
6. Output fields
   1. A new field that tells if the source address was found in the reference set (1), not found (0), or not yet checked (-1). The name of the new field is passed as a required command line argument.
7. Artifacts (**)
   1. addresses_in_reference.csv - This is an archive of the records that made it past the filter to the next step.
   2. addresses_not_in_reference.csv - This is an archive of the records that did not make it past the filter. This artifact is part of the exclusion set of addresses that are set aside for later review.

• Step 2.6 - Export source dataset for geocoding

1. Script Name (*) pg2bulkloader.py
2. URL https://bitbucket.org/sfgovdt/sfgis-general-address-parser/src/master/pg2bulkloader.py
3. Important arguments
   1. input_table - The name of the table containing addresses to be geocoded.
   2. output_file_name - The name of the CSV created from the input table.
   3. input_source - The text associated with the data source of this batch of addresses. The value entered here appears in the EAS user interface (under the source of a given base address or unit).  This field has a 32 character limit. Exceeding 32 characters will crash the Bulk Loader!
4. Example usage

   1. Create table addresses_to_geocode

      addresses_to_geocode

      -- Select, order and save as 'addresses_to_geocode'
      CREATE TABLE addresses_to_geocode AS
      SELECT * FROM addresses_in_reference
      ORDER BY
        street_name,
        street_name_pre_directional,
        street_name_pre_type,
        street_name_post_type,
        street_name_post_directional,
        address_number,
        address_number_suffix,
        subaddress_type,
        subaddress_identifier,
        place_name

   2. Add counter field

      counter

      -- Add and index a counter field
      ALTER TABLE addresses_to_geocode DROP COLUMN IF EXISTS counter;
      ALTER TABLE addresses_to_geocode ADD COLUMN counter SERIAL;
      CREATE INDEX ON addresses_to_geocode (counter);

   3. Export PostgreSQL table to CSV file for Bulk Loading (^++<odbc>)

      pg2bulkloader

      python pg2bulkloader.py
        --odbc_server=<odbc-server>
        --odbc_port=<odbc-port>
        --odbc_database=<odbc-database>
        --odbc_uid=<odbc-uid>
        --odbc_pwd=<odbc-pwd>
        --input_table=addresses_to_geocode
        --output_file_name=./output/addresses_to_geocode
        --input_source='Imported Addresses (20XX-XX-XX)'
        --limit=-1

   4. Archive a copy of table addresses_to_geocode to artifact addresses_to_geocode.csv
5. Output table
   1. addresses_to_geocode
6. Output file
   1. This step generates a new CSV file. The name of the new file is passed as a required command line argument.
7. Artifacts (**)
   1. addresses_to_geocode.csv - A CSV file of addresses ready for geocoding.

Stage 3 - Geocode and filter

• Step 3.1 - Geocode source dataset

1. Input - addresses_to_geocode.csv
2. Output - addresses_geocoded.shp

3. Detailed Substeps

   1. Create folder for storing all input and output artifacts for this iteration of the Bulk Loader process.

      • For example, R:\Tec\..\Eas\_Task\2018_2019\path\to\archive\bulkloader_process_YYYYMMDD

   2. Create new ArcMap map document (ArcMap 10.6.1) 

      • For example, bulkloader_YYYYMMDD.mxd

   3. Add streets (optional)

      • See StClines_20190129.shp in R:\Tec\...\Eas\_Task\2018_2019\20181128_248_DocumentBulkLoader\Data

   4. Create Personal Geodatabase

      1. Right click Home in Folder Connections in Catalog

      2. Select New → Personal Geodatabase

   5. Import CSV into File Geodatabase

      1. Right-click new personal geodatabase: Import → Table (single)

      2. Browse to addresses_to_geocode.csv

      3. Specify output table addresses_to_geocode

      4. Click OK and time on stopwatch. Wait up to 5 minutes for TOC to update.

   6. Geocode with Virtual Address Geocoder
      
      1. Right-click the table addresses_to_geocode in the ArcMap table of contents and select Geocode Addresses
      2. In the dialog 'Choose an address geocoder to use' select 'Add'. 
         1. Browse to and select R:\311\...\StClines_20150729_VirtualAddressLocator
         2. Click 'OK'
      3. Under 'Address Input Fields' select 'Multiple Fields'
         1. Street or intersection: address
         2. ZIP Code: zip
      4. Under Output
         1. Click folder icon. In popup change 'Save as type' to 'Shapefile'.

         2. Save shapefile in path dedicated to artifacts for this Bulk Loader Progress

            1. For example, R:\Tec\..\Eas\_Task\2018_2019\path\to\archive\bulkloader_YYYYMMDD\geocoder\

            2. addresses_geocoded.shp

      5. Time on stopwatch

4. Artifacts (**)

   1. bulkloader_process_YYYYMMDD.mxd

   2. addresses_geocoded.shp 

• Step 3.2 - Filter geocoded dataset

The purpose of this step is to filter geocoded addresses based on their geocoding score and status.

• The geocoding score has a maximum of 100 points. This step keeps addresses with a score of 100.
• The geocoding process also applies of a status value of either 'M' for matched, 'T' for tied with another address, and 'U' for unmatched.
• This step filters out any addresses that are tied with another address (status of 'T'), even if the score is 100. 

1. Input - addresses_geocoded.shp

2. Detailed Substeps

   1. Open the ArcMap document created in the previous step.

   2. Filter matched addresses (status = 'M') with score of 100.

      
      

      1. In the Table of Contents right-click the shapefile from previous step, e.g. addresses_geocoded.shp, and select Open Attributes Table.

      2. Click the first icon in the menu bar (top-left) and select Select By Attributes.

      3. Enter the following WHERE clause to select matched address with a score of 100:

         • ("Status" = 'M') AND ("Score" = 100)

1. 1. 1. Click Apply, wait for operation to complete and then close the Attributes window

   2. Save results to geocoder_matched_and_score100.shp

      1. In the Table of Contents right-click the shapefile from the previous step and select Data → Export Data

      2. Click the browse icon.

      3. In the file browser select the Save as type dropdown and select Shapefile.

      4. Save the shapefile to the artifacts folder dedicated to this iteration of the Bulk Loader Process.

   3. Filter the opposite set: status not matched ('M') or score not 100.

      1. Right-click addresses_geocoded.shp and open the attributes table.

      2. Enter the following WHERE clause:

         • NOT ("Status" = 'M') OR NOT ("Score" = 100)

   4. Save results to geocoder_notmatched_or_under100.shp. (See substeps above.)

2. Output / Artifacts

   1. geocoder_score_100.shp - Shapefile of matched addresses (status = 'M') with geocoding score of 100.

   2. geocoder_notmatched_or_under100.shp - Shapefile of non-matched addresses (unmatched or tied) or with geocoding score less than 100.

 The total number of records of the two output shapefiles should be the same as the number of records in the input shapefile.

Stage 4 - Export full set (single batch) or subset (multiple batches)

• Step 4.1 - Export shapefile for Bulk Loading (entire set or subset batch)

1. Substeps
   1. Create Batch from Subset (optional)

 This example shows filtering for the second batch of 50,000 records using the counter_ field.

1. 1. 1. Right-click the layer geocoder_score_100 in the ArcMap Table of Contents and select Open Attributes Table.
      2. Click the first icon in the menu bar (top-left) and select Select By Attributes.
      3. Enter the following WHERE clause to select the current batch of 50,000 records:
         "counter_" >= 50000 AND "counter_" < 100000
      4. Click Apply, wait for operation to complete and then close the Attributes window
         •  The batch may contain less than 50,000 records due to filtering by geocoding results in the previous step.
   2. Export for Bulk Loader

      1. In the Table of Contents right-click the layer geocoder_score_100 and select Data → Export Data.

      2. Click the browse icon.

      3. In the file browser select the Save as type dropdown and select Shapefile.

      4. Save the shapefile to the artifacts folder dedicated to this iteration of the Bulk Loader Process.

 e.g. R:\Tec\..\Eas\_Task\2018_2019\path\to\archive\bulkloader_process_YYYYMMDD\bulkloader\batch_002\bulkload.shp

1. Artifacts
   1. bulkload.shp - Shapefile for loading into the Bulk Loader in the next stage.

Stage 5 - Run the Bulk Loader

 For a complete set of steps and background about the Bulk Loader, see also Running the Bulk Loader, a page dedicated to its input, operation and results.

• Step 5.1 - Bulk Loader Preparation

1. Transfer the bulkload.shp shapefile from previous step to an EAS automation machine, <environment>_AUTO.

   • Substitute <environment> with one of the relevant environments: SF_DEV, SF_QA, SF_PROD, SD_PROD.

2. Copy the shapefile to the folder C:\apps\eas_automation\app_data\data\bulkload_shapefile.

3. Connect to the database, <environment>_DB, and clear any leftover records from previous Bulk Loader batches.

   1. TRUNCATE bulkloader.address_extract, bulkloader.blocks_nearest;

   2. VACUUM FULL ANALYZE bulkloader.address_extract;

   3. VACUUM FULL ANALYZE bulkloader.blocks_nearest;

4. Make note of EAS record counts before the Bulk Loading operation.

   Record Counts

   SELECT schemaname,relname,n_live_tup FROM pg_stat_user_tables ORDER BY schemaname,relname,n_live_tup

• Step 5.2 - Halt Services (production only)

  1. Place EAS web application into maintenance mode

     • See also Web Application into Maintenance Mode

  2. Turn off the replication server

     • See also Replication Setup

  3. Turn off downstream database propagation service(s)

  
  

• Step 5.3 - Backup Database

1. Make a backup of the EAS database
   • See also Backup the EAS Databases

• Step 5.4 - Run Bulk Loader

1. Open a command prompt and change folders:

   • cd C:\apps\eas_automation\automation\src

2. Run the step to stage the address records:

   • python job.py --job stage_bulkload_shapefile --env SF_DEV --action EXECUTE --v

3. Run the step to bulk load the address records:

   • python job.py --job bulkload --env SF_DEV --action EXECUTE --v

4.  To calculate the time it took to run the Bulk Loader look at the timestamps in the output or use a stopwatch or clock to time the operation.

   
   

• Step 5.3 -  Analysis

1. Query and make note of totals in the bulkloader.address_extract table. The results here will be used to cross check the results in the next stage.

   1. Count/view new base addresses added to the EAS.

      Count/view new base addresses

      SELECT COUNT(*) FROM bulkloader.address_extract WHERE NOT (street_segment_id IS NULL)
      
      SELECT * FROM bulkloader.address_extract WHERE NOT (street_segment_id IS NULL)

   2. Count/view unit addresses (some were already there, some are new)

      Count/view unit addresses

      SELECT COUNT(*) FROM bulkloader.address_extract WHERE NOT (address_id IS NULL)
      
      SELECT * FROM bulkloader.address_extract WHERE NOT (address_id IS NULL)

2. Make note of EAS record counts after the Bulk Load operation.

   Record Counts

   SELECT schemaname,relname,n_live_tup FROM pg_stat_user_tables ORDER BY schemaname,relname,n_live_tup

   • A comparison of 'before' and 'after' record counts will indicate the number of new base addresses added to the table `public.address_base` and the number of new addresses and units added to the table `public.addresses`.

   1.  See dedicated Bulk Loader page, Running the Bulk Loader, for more analysis options.
      
      

Stage 6 - Extract results

• Step 6.1 - Archive exceptions

1. Archive the entire address_extract table.
   1. Use a query tool such as pgAdmin to query and save the table as a CSV file.
      bulkloader.address_extract

      SELECT * FROM 'bulkloader.address_extract';

   2. Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
      • For example, R:\Tec\..\Eas\_Task\path\to\archive\bulkloader_YYYYMMDD\bulkloader\batch_002\address_extract.csv
2. Archive the addresses that raised exceptions during the Bulk Loader run
   1. Query the 'bulkloader.address_extract' table for any value in the 'exception_text' field.
      exception_text

      SELECT * FROM bulkloader.address_extract 
      WHERE NOT(exception_text IS NULL) 
      ORDER BY exception_text;

   2. Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
      • For example, R:\Tec\..\Eas\_Task\path\to\archive\bulkloader_YYYYMMDD\bulkloader\batch_002\exceptions.csv
3. Artifacts
   1. address_extract.csv - Results of every address submitted to the Bulk Loader.
   2. exception_text.csv - Subset of the just the records that were not loaded due to the error indicated in the 'exception_text' field.

• Step 6.2 - Archive unique EAS change_request_id associated with the Bulk Load

1. Get the unique EAS change_request_id created by the Bulk Load operation. The value of <change_request_id> will be used in the next steps to count addresses added to the EAS.
   

   1. Query the 'public.change_requests' table for the new 'change_request_id' value.

      change_request_id

      SELECT change_request_id FROM public.change_requests 
      WHERE requestor_comment LIKE 'bulk load change request' 
      ORDER BY change_request_id DESC 
      LIMIT 1;

   2. Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
      • For example, R:\Tec\..\Eas\_Task\path\to\archive\bulkloader_YYYYMMDD\bulkloader\batch_002\change_request_id.csv
2. Artifacts
   1. change_request_id.csv - The unique EAS change_request_id created by the Bulk Load operation.

• Step 6.3 - Archive new EAS address_base records

1. Get all the base records added to the EAS during the Bulk Loader operation.
   

   1. Query the public.address_base table on the new change_request_id value.

      public.address_base

      SELECT activate_change_request_id, address_id, public.address_base.*
      FROM public.address_base, public.addresses
      WHERE public.address_base.address_base_id = public.addresses.address_base_id
      AND public.addresses.address_base_flg = TRUE
      AND public.addresses.activate_change_request_id = <change_request_id>;

   2. Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
      • For example, R:\Tec\..\Eas\_Task\path\to\archive\bulkloader_YYYYMMDD\bulkloader\batch_002\address_base.csv
2. Artifacts
   1. address_base.csv - All the base records added to the EAS during the Bulk Loader operation.

• Step 6.4 - Archive new EAS addresses records

1. Get all the address records (including units) added to the EAS during the Bulk Loader operation..
   

   1. Query the public.addresses table on the new change_request_id value.

      public.addresses

      SELECT * FROM public.addresses
      WHERE activate_change_request_id = <change_request_id>;

   2. Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
      • For example, R:\Tec\..\Eas\_Task\path\to\archive\bulkloader_YYYYMMDD\bulkloader\batch_002\addresses.csv
2. Artifacts
   1. addresses.csv - All the address records (including units) added to the EAS during the Bulk Loader operation.

• Step 6.5 - Cross check results

Compare the results of Stage 5 with the results from Stage 6.

1. The number of base addresses found in the Stage 5 Analysis should be identical to the number of base addresses found in Step 6.3.

2. The number of addresses found in the Stage 5 Analysis should be less than or equal to the number of addresses listed in Step 6.4. (The Bulk Loader does not provide enough information in the the bulkloader.address_extract table to determine the exact number of new addresses added. But there is enough information to determine an upper limit.)

Stage 7 - Cleanup and Restoration

• Step 7.1 - Database Cleanup

1. Connect to the database, <environment>_DB, and clear temporary records from the latest Bulk Loader batch.

   TRUNCATE

   TRUNCATE bulkloader.address_extract, bulkloader.blocks_nearest;

   VACUUM

   VACUUM FULL ANALYZE bulkloader.address_extract;

   VACUUM

   TRUNCATE bulkloader.address_extract, bulkloader.blocks_nearest;

2. On Failure Restore Database
   1. If the Bulk Loading Process ends in failure then follow these steps to restore from backup.
3. Restore Services (Production Only)
   1. Turn on production-to-replication service
      
      • See also Replication Setup
   2. Turn on downstream database propagation service(s)
   3. Enable front-end access to EAS

Notes

(⁺)  Substitute EAS <environment> with one of the relevant environments: SF_DEV, SF_QA, SF_PROD, SD_PROD. 

(^++<odbc>)  Substitute <odbc> arguments with values for an available PostgreSQL database.

<odbc-server> - Name or IP address of the database server, e.g. localhost
<odbc-port> - Port of the database server, e.g. 5432
<odbc-database> - Name of the database, e.g. awgdb
<odbc-uid> - User name
<odbc-pwd> - User password

(*) Scripts are written in and require Python 3. See the source code repository for more details.

(**) Artifacts should be saved in a network folder dedicated to the entire instance of a given Bulk Loader process. Artifact names shown are suggestions. Note: For large datasets the entire process could be spread over many days or weeks. Take this into consideration when naming any artifacts and subfolders.

Important considerations when running the Bulk Loader

Downstream implications

Some of the downstream databases affected by running the Bulk Loader:

• EAS Database (master/production) - targeted directly by the Bulk Loader
• EAS Database (slave/replication)
• Other internal and external business system databases that are updated in near-real-time

Backup recommended

If a problem is noticed immediately after running the Bulk Loader it may be possible to restore the database from backup.

In order to facilitate an immediate backout it is recommended that the Bulk Loader process be run after hours and with access to the EAS temporarily suspended. Otherwise, backtracking may become difficult if not impossible.

Development stack

 This is the stack used for the development and testing of the steps. For best results run the steps with a similar or compatible stack.

1. Stages 1 and 2 (Parsing)
   1. Python 3 (3.6.4)
   2. PostgreSQL (10.3)
   3. pgAdmin (for executing raw SQL)
2. Stages 3 and 4 (Geocoding)
   1. ArcMap (10.6.1)
3. Stages 5 and 6 (Bulk Loading)
   1. EAS <environment>⁽⁺⁾
   2. PostgreSQL (10.3)

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