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Table of Contents |
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- 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.
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Stage Number | Stage | Category | Summary | Environment | Iterations | Estimated Person Time | Estimated Computer Time |
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1 | Import and parse reference dataset (Optional) | Parsing | This optional step in the Bulk Loader process is to cross check an address for a match in a reference data set. If a source address is found in the reference dataset the address makes it to the next step. If not found the address is put aside in an exclusion set for later review. | Once per Bulk Loader process | 1 hour | 10 minutes | |
2 | Import, parse and filter source dataset | Parsing | Import the dataset destined for the EAS. Parse and filter the set. | Once per Bulk Loader process | 90 minutes | 15 minutes | |
Geocode and filter | Geocoding | Geocode the set and filter further based on the geocoder score and status. | ArcMap | Once per Bulk Loader process | 1 hour | 5 minutes | |
4 | Export full set (single batch) or subset (multiple batches) | Geocoding | For large datasets, create one of many subsets that will be run through the Bulk Loader in multiple batches. | ArcMap | One or more batches for each Bulk Loader process | 30 minutes per batch | 5 minutes per batch |
5 | Bulk Load batch (full set or subset) | Bulk Loading | Run the entire batch or each subset batch through the Bulk Loader. | One or more batches for each Bulk Loader process | 1 hour per batch | 5 minutes per batch | |
6 | Extract results | Bulk Loading | Extract and archive the list of addresses that were added to the EAS . Also archive the unique EAS 'change request id' associated with this batch. Also archive the addresses that were rejected by the Bulk Loader in this batch. | PostgreSQL / pgAdmin | One or more batches for each Bulk Loader process | 1 hour per batch | 5 minutes per batch |
7 | Cleanup and Restoration | Bulk Loading | Clean up database, restore services and in the event of a failure, restore from backup. | PostgreSQL / pgAdmin | One or more batches for each Bulk Loader process | 1 hour per batch | 5 minutes per batch |
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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 (Step 2.5) is skipped.
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Anchorstage3 stage3
Stage 3 - Geocode and filter
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stage3 |
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Step 3.1 - Geocode source dataset
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Anchorstage4 stage4
Stage 4 - Export shapefile - full set (single batch) or subset (multiple batches)
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stage4 |
Note | ||
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Stages 4, 5 and 6 can be run one time with the results from Stage 3, or they can be run in multiple batches of subsets. A major consideration of when to run the full set at once versus in batches is the number of records being Bulk Loaded. The size of each Bulk Loader operation affects the following aspects of the EAS:
For medium-to-large datasets (input sets with over 1,000 records) it is recommended that the Bulk Loading process be run in batches over several days or weeks. Reminder! It is required that the process first be run on a development server to assess the implications of the operation. The remaining steps will document a single batch iteration. Repeat these steps in a multi-batch process. |
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Anchorstage5 stage5
Stage 5 - Run the Bulk Loader
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stage5 |
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.
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Anchorstage6 stage6
Stage 6 - Extract results
stage6 | |
stage6 |
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Step 6.1 - Archive exceptions
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- Archive the entire
address_extract
table.Use a query tool such as pgAdmin to query and save the table as a CSV file.
Code Block language sql firstline 1 title address_extract linenumbers true SELECT * FROM bulkloader.address_extract;
- Save the file in the network folder dedicated to artifacts for the Bulk Loader iteration.
- Save as artifact address_extract.csv
- Archive the addresses that raised exceptions during the Bulk Loader process
Query subtotals
Code Block language sql firstline 1 title exception_text_counts linenumbers true SELECT exception_text, Count(*) FROM bulkloader.address_extract GROUP BY exception_text ORDER BY exception_text;
Save artifact as artifact exception_text_counts.csv
Query all exception text records
Code Block language sql firstline 1 title exception_text linenumbers true SELECT * FROM bulkloader.address_extract WHERE NOT(exception_text IS NULL) ORDER BY exception_text, id;
- save Save artifact as artifact exception_text.csv
- Artifacts
- address_extract.csv - Results of every address submitted to the Bulk Loader.
- exception_text_counts.csv - Counts of the records that were not loaded due to the error indicated in the
'exception_text
' field. - exception_text.csv - Subset of the just the records that were not loaded due to the error indicated in the
'exception_text
' field
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- 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.Query the
'public.change_requests'
table for the new'change_request_id'
value.
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_NNN\Code Block language sql firstline 1 title change_request_id linenumbers true SELECT change_request_id FROM public.change_requests WHERE requestor_comment LIKE 'bulk load change request' ORDER BY change_request_id DESC LIMIT 1;
;
- Save artifact as change_request_id.csv
- Artifacts
- change_request_id.csv - The unique EAS change_request_id created by the Bulk Load operation.
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- Get all the address records (including units) added to the EAS during the Bulk Loader operation..
Query the
public.addresses
table on the newchange_request_id
value.Code Block language sql firstline 1 title addresses linenumbers true SELECT * FROM public.addresses WHERE activate_change_request_id = <change_request_id>;
- 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_NNN\artifact as addresses.csv
- Extract sample unit address from the output
- Pick a random record from the results where unit_num is not NULL. Gather the value in the address_base_id field.
- Construct a URL from this value like this: http://eas.sfgov.org/?address=NNNNNN
- Where NNNNNN is the value from the address_base_id field.
- Make note of this URL for use in Step 7 when testing EAS after services are restored.
- Artifacts
- addresses.csv - All the address records (including units) added to the EAS during the Bulk Loader operation.
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- Get all the base records added to the EAS during the Bulk Loader operation.
Query the
public.address_base
table on the newchange_request_id
value.Code Block language sql firstline 1 title address_base linenumbers true 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>;
- 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_NNN\artifact as
address_base.csv
- Extract sample base address from the output
- Pick a random record from the results. Gather the value in the address_base_id field.
- Construct a URL from this value like this: http://eas.sfgov.org/?address=NNNNNN
- Where NNNNNN is the value from the address_base_id field.
- Make note of this URL for use in Step 7 when testing EAS after services are restored.
- Artifacts
- address_base.csv - All the base records added to the EAS during the Bulk Loader operation.
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