Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Multi row range filters? #344

Open
alpuy opened this issue May 4, 2021 · 0 comments
Open

Multi row range filters? #344

alpuy opened this issue May 4, 2021 · 0 comments

Comments

@alpuy
Copy link

alpuy commented May 4, 2021

I have the following data table:
columns = {
"meas_point_key": {"cf": "rowkey", "col": "key1", "type": "string", "length":"8"},
"date_key": {"cf": "rowkey", "col": "key2", "type": "string", "length":"14"},
"magnitude_key": {"cf": "rowkey", "col": "key3", "type": "string", "length":"2"},
"meas_int_key": {"cf": "rowkey", "col": "key4", "type": "string", "length":"1"},
"source_key": {"cf": "rowkey", "col": "key5", "type": "string"},
"date": {"cf": "IV", "col": "D", "type": "bigint"},
"file": {"cf": "IV", "col": "F", "type": "string"},
"last_update_date": {"cf": "IV", "col": "L", "type": "bigint"},
"magnitude": {"cf": "IV", "col": "M", "type": "bigint"},
"meas_int": {"cf": "IV", "col": "MI", "type": "bigint"},
"meas_point": {"cf": "IV", "col": "MP", "type": "bigint"},
"source": {"cf": "IV", "col": "S", "type": "bigint"},
"value": {"cf": "IV", "col": "V", "type": "double"},
"last_update_val": {"cf": "IV", "col": "LAV", "type": "bigint"},
"val_det": {"cf": "IV", "col": "VD", "type": "string"},
"val_res": {"cf": "IV", "col": "VR", "type": "string"}
}

and i want to scan based on the rowkey with the following filters:

df = df1.where((df1.meas_point_key.isin(meter_list_B.value) ) & (df1.magnitude_key == "13") & (df1.date_key >= '01588302000000') & (df1.date_key <= '01593572400000') & (df1.meas_int_key == '1'))

where meter_list_B is a broadcasted list of string values, this list contains about 15000 values.

Is this query optimal? because i think that because of the time it is taking it is not an optimal scan.

Are MultiRowRangeFilters used in shc?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant