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%% Cell type:code id:2dbe2890-3b90-4978-9648-625dc8d7a949 tags:
``` python
# !wget https://pages.cs.wisc.edu/~harter/cs544/data/hdma-wi-2021.zip
# !unzip hdma-wi-2021.zip
```
%% Cell type:code id:3a4cfa35-6b4e-48bc-acc6-09d426cd6c3e tags:
``` python
import pyarrow as pa
import pyarrow.csv
import pyarrow.parquet
```
%% Cell type:code id:e5acbdd4-a266-477a-b720-a68e16e6c8f6 tags:
``` python
%%time
t = pa.csv.read_csv("hdma-wi-2021.csv")
```
%% Output
CPU times: user 1.18 s, sys: 996 ms, total: 2.18 s
Wall time: 575 ms
%% Cell type:code id:dd5941ac-fc66-4037-81f8-4f32b5b9e4bc tags:
``` python
pa.parquet.write_table(t, "hdma-wi-2021.parquet")
```
%% Cell type:code id:ed698328-e057-41a5-89d9-351166331a6e tags:
``` python
# point 1: Parquet lets us skip slow schema inference
```
%% Cell type:code id:3c3b8e74-d1d6-412e-9dc9-f6f1cc252ce7 tags:
``` python
%%time
t = pa.parquet.read_table("hdma-wi-2021.parquet")
```
%% Output
CPU times: user 396 ms, sys: 102 ms, total: 498 ms
Wall time: 147 ms
%% Cell type:code id:d582cd7a-27ed-4c09-a22e-8663bd24e231 tags:
``` python
# point 2: Parquet is byte encoded
```
%% Cell type:code id:9e2d33ce-3a07-405a-b379-ef86e6e0e076 tags:
``` python
with open("hdma-wi-2021.csv", "rb") as f:
print(f.read(100))
```
%% Output
b'activity_year,lei,derived_msa-md,state_code,county_code,census_tract,conforming_loan_limit,derived_l'
%% Cell type:code id:76debfbf-a7ca-48f6-8ca0-c9a00fbd3dd9 tags:
``` python
with open("hdma-wi-2021.parquet", "rb") as f:
print(f.read(100))
```
%% Output
b'PAR1\x15\x04\x15\x10\x15\x14L\x15\x02\x15\x00\x12\x00\x00\x08\x1c\xe5\x07\x00\x00\x00\x00\x00\x00\x15\x00\x15\x1a\x15\x1e,\x15\x8e\xce6\x15\x10\x15\x06\x15\x06\x1c\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x16\x00(\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\r0\x04\x00\x00\x00\x8e\xce6'
%% Cell type:code id:d891d58c-8d8b-4dc9-bb2f-d12a03db465e tags:
``` python
# point 3: Parquet files are column oriented
```
%% Cell type:code id:3159c561-122d-46af-96fb-0093368f6086 tags:
``` python
%%time
t2 = pa.parquet.read_table("hdma-wi-2021.parquet", columns=["lei", "census_tract"])
```
%% Output
CPU times: user 26.3 ms, sys: 2.61 ms, total: 29 ms
Wall time: 20.8 ms
%% Cell type:code id:51ad1ba1-9ea7-4188-b96d-aaa1847f3e95 tags:
``` python
t
```
%% Output
pyarrow.Table
activity_year: int64
lei: string
derived_msa-md: int64
state_code: string
county_code: int64
census_tract: int64
conforming_loan_limit: string
derived_loan_product_type: string
derived_dwelling_category: string
derived_ethnicity: string
derived_race: string
derived_sex: string
action_taken: int64
purchaser_type: int64
preapproval: int64
loan_type: int64
loan_purpose: int64
lien_status: int64
reverse_mortgage: int64
open-end_line_of_credit: int64
business_or_commercial_purpose: int64
loan_amount: double
loan_to_value_ratio: string
interest_rate: string
rate_spread: string
hoepa_status: int64
total_loan_costs: string
total_points_and_fees: string
origination_charges: string
discount_points: string
lender_credits: string
loan_term: string
prepayment_penalty_term: string
intro_rate_period: string
negative_amortization: int64
interest_only_payment: int64
balloon_payment: int64
other_nonamortizing_features: int64
property_value: string
construction_method: int64
occupancy_type: int64
manufactured_home_secured_property_type: int64
manufactured_home_land_property_interest: int64
total_units: string
multifamily_affordable_units: string
income: int64
debt_to_income_ratio: string
applicant_credit_score_type: int64
co-applicant_credit_score_type: int64
applicant_ethnicity-1: int64
applicant_ethnicity-2: int64
applicant_ethnicity-3: int64
applicant_ethnicity-4: int64
applicant_ethnicity-5: int64
co-applicant_ethnicity-1: int64
co-applicant_ethnicity-2: int64
co-applicant_ethnicity-3: int64
co-applicant_ethnicity-4: int64
co-applicant_ethnicity-5: null
applicant_ethnicity_observed: int64
co-applicant_ethnicity_observed: int64
applicant_race-1: int64
applicant_race-2: int64
applicant_race-3: int64
applicant_race-4: int64
applicant_race-5: int64
co-applicant_race-1: int64
co-applicant_race-2: int64
co-applicant_race-3: int64
co-applicant_race-4: int64
co-applicant_race-5: int64
applicant_race_observed: int64
co-applicant_race_observed: int64
applicant_sex: int64
co-applicant_sex: int64
applicant_sex_observed: int64
co-applicant_sex_observed: int64
applicant_age: string
co-applicant_age: string
applicant_age_above_62: string
co-applicant_age_above_62: string
submission_of_application: int64
initially_payable_to_institution: int64
aus-1: int64
aus-2: int64
aus-3: int64
aus-4: int64
aus-5: int64
denial_reason-1: int64
denial_reason-2: int64
denial_reason-3: int64
denial_reason-4: int64
tract_population: int64
tract_minority_population_percent: double
ffiec_msa_md_median_family_income: int64
tract_to_msa_income_percentage: int64
tract_owner_occupied_units: int64
tract_one_to_four_family_homes: int64
tract_median_age_of_housing_units: int64
----
activity_year: [[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021]]
lei: [["54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80",...,"254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219"],["254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219",...,"549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46"],["549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46",...,"ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18"],["ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18",...,"54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80"]]
derived_msa-md: [[99999,99999,99999,29404,11540,...,33460,20740,33460,33460,99999],[99999,33460,33460,33460,20740,...,99999,33340,33340,33340,33340],[99999,33340,39540,33340,39540,...,36780,36780,11540,33340,33340],[29100,31540,99999,22540,99999,...,31540,99999,31540,99999,31540]]
state_code: [["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"]]
county_code: [[55027,55001,55013,55059,55087,...,55109,55017,55093,55109,55033],[55095,55109,55109,55109,55017,...,55027,55079,55133,55133,55079],[55027,55133,55101,55079,55101,...,55139,55139,55087,55131,55079],[55063,55021,55011,55039,55097,...,55025,55029,55025,55051,55021]]
census_tract: [[55027961800,55001950501,55013970400,55059002000,55087013300,...,55109121000,55017011100,55093960700,55109120904,55033970400],[55095960500,55109120700,55109121000,55109120904,55017010700,...,55027961500,55079090300,55133203305,55133203406,55079000303],[55027960800,55133201600,55101000901,55079016100,55101002402,...,55139001100,55139001803,55087012100,55131450104,55079150301],[55063010201,55021970100,55011960400,55039041300,55097960600,...,55025011301,55029100800,55025012300,55051180300,55021970300]]
conforming_loan_limit: [["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"]]
derived_loan_product_type: [["Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien",...,"Conventional:First Lien","Conventional:First Lien","FSA/RHS:First Lien","Conventional:Subordinate Lien","Conventional:First Lien"],["Conventional:First Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien",...,"Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:First Lien"],["Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien",...,"Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien"],["Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:First Lien",...,"Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien"]]
derived_dwelling_category: [["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"]]
derived_ethnicity: [["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Joint",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Ethnicity Not Available","Not Hispanic or Latino",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Hispanic or Latino","Hispanic or Latino",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Ethnicity Not Available",...,"Ethnicity Not Available","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"]]
...
%% Cell type:code id:28a0a2d6-95a1-4c86-9577-ef62721c19d6 tags:
``` python
# point 4: Parquet is compressed, with snappy by default
```
%% Cell type:code id:9ee9812e-76d9-4bf3-9194-4556f83bf0ff tags:
``` python
%%time
pa.parquet.write_table(t, "hdma-wi-2021.parquet", compression="snappy")
```
%% Output
CPU times: user 698 ms, sys: 18.6 ms, total: 717 ms
Wall time: 730 ms
%% Cell type:code id:487c9b6f-559c-4777-b498-b4f41cd8667a tags:
``` python
%%time
pa.parquet.write_table(t, "hdma-wi-2021-gzip.parquet", compression="gzip")
```
%% Output
CPU times: user 2.21 s, sys: 13.9 ms, total: 2.22 s
Wall time: 2.22 s
%% Cell type:code id:f2c3e5a3-7bf2-4f92-8019-e13b8cc28c28 tags:
``` python
!ls -lh
```
%% Output
total 216M
-rw-rw-r-- 1 tharter tharter 333 Feb 20 15:45 Dockerfile
-rw-r----- 1 tharter tharter 167M Nov 1 2022 hdma-wi-2021.csv
-rw-rw-r-- 1 tharter tharter 13M Feb 24 09:04 hdma-wi-2021-gzip.parquet
-rw-rw-r-- 1 tharter tharter 16M Feb 24 09:03 hdma-wi-2021.parquet
-rw-rw-r-- 1 tharter tharter 21M Jan 5 2023 hdma-wi-2021.zip
-rw-rw-r-- 1 tharter tharter 17K Feb 24 09:03 lec1.ipynb
drwxrwxr-x 3 tharter tharter 4.0K Feb 21 09:26 old
-rw-rw-r-- 1 tharter tharter 1.8K Feb 20 15:45 requirements.txt
drwxrwxr-x 3 tharter tharter 4.0K Feb 21 11:39 shared
%% Cell type:code id:92459058-9a4b-4da7-8820-65a6ebb70801 tags:
``` python
```
lec/14-file-formats/lec2.ipynb 0 → 100644
View file @ dfb8dfba
%% Cell type:code id:803ee3d0-11db-4b3c-901f-c09969c42a99 tags:
``` python
# !wget https://pages.cs.wisc.edu/~harter/cs544/data/hdma-wi-2021.zip
# !unzip hdma-wi-2021.zip
```
%% Cell type:code id:dc2864a3-8f39-440e-9cc1-a88e6fcf764b tags:
``` python
import pyarrow as pa
import pyarrow.csv
import pyarrow.parquet
```
%% Cell type:code id:ddb42c11-e332-42cd-be7f-4ce2ce74ed6b tags:
``` python
%%time
t = pa.csv.read_csv("hdma-wi-2021.csv")
```
%% Output
CPU times: user 1.09 s, sys: 810 ms, total: 1.9 s
Wall time: 506 ms
%% Cell type:code id:a582a756-1c75-4869-8f27-b849320213e1 tags:
``` python
pa.parquet.write_table(t, "hdma-wi-2021.parquet")
```
%% Cell type:code id:80d2c0a6-9c6e-475d-a56b-99a4e7fbb05d tags:
``` python
# point 1: we don't need to do slow schema inference with parquet
```
%% Cell type:code id:c2f34f52-60c6-48c5-b29f-4f6131fb593e tags:
``` python
%%time
t = pa.parquet.read_table("hdma-wi-2021.parquet")
```
%% Output
CPU times: user 400 ms, sys: 118 ms, total: 517 ms
Wall time: 157 ms
%% Cell type:code id:99005a4b-4eb8-4970-a1cd-65422bb6dad6 tags:
``` python
# point 2: parquet uses a binary encoding
```
%% Cell type:code id:abc45de9-6b4d-4b4e-a2ff-127a69a9e3c0 tags:
``` python
with open("hdma-wi-2021.csv", "rb") as f:
print(f.read(100))
```
%% Output
b'activity_year,lei,derived_msa-md,state_code,county_code,census_tract,conforming_loan_limit,derived_l'
%% Cell type:code id:e642e241-078c-45ba-8cf0-6a7587720e17 tags:
``` python
with open("hdma-wi-2021.parquet", "rb") as f:
print(f.read(100))
```
%% Output
b'PAR1\x15\x04\x15\x10\x15\x14L\x15\x02\x15\x00\x12\x00\x00\x08\x1c\xe5\x07\x00\x00\x00\x00\x00\x00\x15\x00\x15\x1a\x15\x1e,\x15\x8e\xce6\x15\x10\x15\x06\x15\x06\x1c\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x16\x00(\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x18\x08\xe5\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\r0\x04\x00\x00\x00\x8e\xce6'
%% Cell type:code id:912485a1-23c5-49cd-bd75-16bd860f8d3a tags:
``` python
# point 3: parquet is column oriented
```
%% Cell type:code id:4095de52-6859-440c-b614-cdeb9c28ebe6 tags:
``` python
%%time
t2 = pa.parquet.read_table("hdma-wi-2021.parquet", columns=["lei", "census_tract"])
```
%% Output
CPU times: user 26.8 ms, sys: 4.41 ms, total: 31.2 ms
Wall time: 22.3 ms
%% Cell type:code id:d277e063-d31c-495d-8fe1-92883447c451 tags:
``` python
t
```
%% Output
pyarrow.Table
activity_year: int64
lei: string
derived_msa-md: int64
state_code: string
county_code: int64
census_tract: int64
conforming_loan_limit: string
derived_loan_product_type: string
derived_dwelling_category: string
derived_ethnicity: string
derived_race: string
derived_sex: string
action_taken: int64
purchaser_type: int64
preapproval: int64
loan_type: int64
loan_purpose: int64
lien_status: int64
reverse_mortgage: int64
open-end_line_of_credit: int64
business_or_commercial_purpose: int64
loan_amount: double
loan_to_value_ratio: string
interest_rate: string
rate_spread: string
hoepa_status: int64
total_loan_costs: string
total_points_and_fees: string
origination_charges: string
discount_points: string
lender_credits: string
loan_term: string
prepayment_penalty_term: string
intro_rate_period: string
negative_amortization: int64
interest_only_payment: int64
balloon_payment: int64
other_nonamortizing_features: int64
property_value: string
construction_method: int64
occupancy_type: int64
manufactured_home_secured_property_type: int64
manufactured_home_land_property_interest: int64
total_units: string
multifamily_affordable_units: string
income: int64
debt_to_income_ratio: string
applicant_credit_score_type: int64
co-applicant_credit_score_type: int64
applicant_ethnicity-1: int64
applicant_ethnicity-2: int64
applicant_ethnicity-3: int64
applicant_ethnicity-4: int64
applicant_ethnicity-5: int64
co-applicant_ethnicity-1: int64
co-applicant_ethnicity-2: int64
co-applicant_ethnicity-3: int64
co-applicant_ethnicity-4: int64
co-applicant_ethnicity-5: null
applicant_ethnicity_observed: int64
co-applicant_ethnicity_observed: int64
applicant_race-1: int64
applicant_race-2: int64
applicant_race-3: int64
applicant_race-4: int64
applicant_race-5: int64
co-applicant_race-1: int64
co-applicant_race-2: int64
co-applicant_race-3: int64
co-applicant_race-4: int64
co-applicant_race-5: int64
applicant_race_observed: int64
co-applicant_race_observed: int64
applicant_sex: int64
co-applicant_sex: int64
applicant_sex_observed: int64
co-applicant_sex_observed: int64
applicant_age: string
co-applicant_age: string
applicant_age_above_62: string
co-applicant_age_above_62: string
submission_of_application: int64
initially_payable_to_institution: int64
aus-1: int64
aus-2: int64
aus-3: int64
aus-4: int64
aus-5: int64
denial_reason-1: int64
denial_reason-2: int64
denial_reason-3: int64
denial_reason-4: int64
tract_population: int64
tract_minority_population_percent: double
ffiec_msa_md_median_family_income: int64
tract_to_msa_income_percentage: int64
tract_owner_occupied_units: int64
tract_one_to_four_family_homes: int64
tract_median_age_of_housing_units: int64
----
activity_year: [[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021],[2021,2021,2021,2021,2021,...,2021,2021,2021,2021,2021]]
lei: [["54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80",...,"254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219"],["254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219","254900X6OAHFW6BUT219",...,"549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46"],["549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46","549300KY533JFETOYG46",...,"ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18"],["ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18","ZF85QS7OXKPBG52R7N18",...,"54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80","54930034MNPILHP25H80"]]
derived_msa-md: [[99999,99999,99999,29404,11540,...,33460,20740,33460,33460,99999],[99999,33460,33460,33460,20740,...,99999,33340,33340,33340,33340],[99999,33340,39540,33340,39540,...,36780,36780,11540,33340,33340],[29100,31540,99999,22540,99999,...,31540,99999,31540,99999,31540]]
state_code: [["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"],["WI","WI","WI","WI","WI",...,"WI","WI","WI","WI","WI"]]
county_code: [[55027,55001,55013,55059,55087,...,55109,55017,55093,55109,55033],[55095,55109,55109,55109,55017,...,55027,55079,55133,55133,55079],[55027,55133,55101,55079,55101,...,55139,55139,55087,55131,55079],[55063,55021,55011,55039,55097,...,55025,55029,55025,55051,55021]]
census_tract: [[55027961800,55001950501,55013970400,55059002000,55087013300,...,55109121000,55017011100,55093960700,55109120904,55033970400],[55095960500,55109120700,55109121000,55109120904,55017010700,...,55027961500,55079090300,55133203305,55133203406,55079000303],[55027960800,55133201600,55101000901,55079016100,55101002402,...,55139001100,55139001803,55087012100,55131450104,55079150301],[55063010201,55021970100,55011960400,55039041300,55097960600,...,55025011301,55029100800,55025012300,55051180300,55021970300]]
conforming_loan_limit: [["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"],["C","C","C","C","C",...,"C","C","C","C","C"]]
derived_loan_product_type: [["Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien",...,"Conventional:First Lien","Conventional:First Lien","FSA/RHS:First Lien","Conventional:Subordinate Lien","Conventional:First Lien"],["Conventional:First Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien",...,"Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:First Lien"],["Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien",...,"Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien"],["Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:Subordinate Lien","Conventional:First Lien",...,"Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien","Conventional:First Lien"]]
derived_dwelling_category: [["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"],["Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built",...,"Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built","Single Family (1-4 Units):Site-Built"]]
derived_ethnicity: [["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Joint",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Ethnicity Not Available","Not Hispanic or Latino",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Hispanic or Latino","Hispanic or Latino",...,"Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"],["Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Ethnicity Not Available",...,"Ethnicity Not Available","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino","Not Hispanic or Latino"]]
...
%% Cell type:code id:41baa49f-51dd-4c6f-9c32-33ba44f4de83 tags:
``` python
# point 4: Parquet files are compressed with snappy by default
```
%% Cell type:code id:5a043407-2a33-4c0c-8adf-bef72156d3ca tags:
``` python
!ls -lh
```
%% Output
total 204M
-rw-r----- 1 tharter tharter 167M Nov 1 2022 hdma-wi-2021.csv
-rw-rw-r-- 1 tharter tharter 16M Feb 24 11:08 hdma-wi-2021.parquet
-rw-rw-r-- 1 tharter tharter 21M Jan 5 2023 hdma-wi-2021.zip
-rw-rw-r-- 1 tharter tharter 18K Feb 24 10:11 lec1.ipynb
-rw-rw-r-- 1 tharter tharter 16K Feb 24 11:14 lec2.ipynb
%% Cell type:code id:2ff0caa9-6f57-45b0-8ff4-910eb0ad2359 tags:
``` python
%%time
pa.parquet.write_table(t, "hdma-wi-2021.parquet", compression="snappy")
```
%% Output
CPU times: user 716 ms, sys: 24.2 ms, total: 740 ms
Wall time: 754 ms
%% Cell type:code id:ea976df1-d258-4446-a277-9a9d750bfc49 tags:
``` python
%%time
pa.parquet.write_table(t, "hdma-wi-2021-gzip.parquet", compression="gzip")
```
%% Output
CPU times: user 2.15 s, sys: 15.7 ms, total: 2.17 s
Wall time: 2.17 s
%% Cell type:code id:c587e2e5-2167-4663-ab5c-5df51f3f9937 tags:
``` python
!ls -lh
```
%% Output
total 216M
-rw-r----- 1 tharter tharter 167M Nov 1 2022 hdma-wi-2021.csv
-rw-rw-r-- 1 tharter tharter 13M Feb 24 11:15 hdma-wi-2021-gzip.parquet
-rw-rw-r-- 1 tharter tharter 16M Feb 24 11:15 hdma-wi-2021.parquet
-rw-rw-r-- 1 tharter tharter 21M Jan 5 2023 hdma-wi-2021.zip
-rw-rw-r-- 1 tharter tharter 18K Feb 24 10:11 lec1.ipynb
-rw-rw-r-- 1 tharter tharter 16K Feb 24 11:14 lec2.ipynb
%% Cell type:code id:e525a734-ac33-40b4-a8c1-dc4c30b06b02 tags:
``` python
```
lec/15-sql/lec1.ipynb 0 → 100644
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lec/18-hdfs/docker-compose.yml 0 → 100644
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services:
hdfs:
image: p4-hdfs
hostname: main
ports:
- "127.0.0.1:9870:9870"
deploy:
resources:
limits:
memory: 2g
command: sleep infinity
nb:
image: p4-nb
ports:
- "127.0.0.1:5000:5000"
volumes:
- "./nb:/nb"
deploy:
resources:
limits:
memory: 2g
lec/18-hdfs/hdfs.Dockerfile 0 → 100644
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FROM ubuntu:24.04
RUN apt-get update; apt-get install -y wget curl openjdk-11-jdk python3-pip iproute2 nano
# HDFS
RUN wget https://dlcdn.apache.org/hadoop/common/hadoop-3.3.6/hadoop-3.3.6.tar.gz; tar -xf hadoop-3.3.6.tar.gz; rm hadoop-3.3.6.tar.gz
ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
ENV PATH="${PATH}:/hadoop-3.3.6/bin"
ENV HADOOP_HOME=/hadoop-3.3.6
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lec/18-hdfs/notebook.Dockerfile 0 → 100644
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FROM p4-hdfs
RUN pip3 install jupyterlab==4.0.3 jupyter-client==8.4.0 pyarrow==17.0.0 pandas==2.2.3 requests==2.31.0 nbconvert==7.9.2 --break-system-packages
CMD export CLASSPATH=`$HADOOP_HOME/bin/hdfs classpath --glob` && \
python3 -m jupyterlab --no-browser --ip=0.0.0.0 --port=5000 --allow-root --NotebookApp.token=''
lec/20-spark/Dockerfile 0 → 100644
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FROM ubuntu:24.04
RUN apt-get update; apt-get install -y wget curl openjdk-11-jdk python3-pip nano
# SPARK
RUN wget https://archive.apache.org/dist/spark/spark-3.5.5/spark-3.5.5-bin-hadoop3.tgz && tar -xf spark-3.5.5-bin-hadoop3.tgz && rm spark-3.5.5-bin-hadoop3.tgz
# HDFS
RUN wget https://dlcdn.apache.org/hadoop/common/hadoop-3.3.6/hadoop-3.3.6.tar.gz && tar -xf hadoop-3.3.6.tar.gz && rm hadoop-3.3.6.tar.gz
# Jupyter
RUN pip3 install jupyterlab==4.3.5 pandas==2.2.3 pyspark==3.5.5 --break-system-packages
ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
ENV PATH="${PATH}:/hadoop-3.3.6/bin"
ENV HADOOP_HOME=/hadoop-3.3.6
lec/20-spark/docker-compose.yml 0 → 100644
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services:
nb:
image: spark-demo
ports:
- "127.0.0.1:5000:5000"
- "127.0.0.1:4040:4040"
volumes:
- "./nb:/nb"
command: python3 -m jupyterlab --no-browser --ip=0.0.0.0 --port=5000 --allow-root --NotebookApp.token=''
nn:
image: spark-demo
hostname: nn
command: sh -c "hdfs namenode -format -force && hdfs namenode -D dfs.replication=1 -fs hdfs://nn:9000"
dn:
image: spark-demo
command: hdfs datanode -fs hdfs://nn:9000
spark-boss:
image: spark-demo
hostname: boss
command: sh -c "/spark-3.5.5-bin-hadoop3/sbin/start-master.sh && sleep infinity"
spark-worker:
image: spark-demo
command: sh -c "/spark-3.5.5-bin-hadoop3/sbin/start-worker.sh spark://boss:7077 -c 2 -m 2g && sleep infinity"
deploy:
replicas: 2
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