Firebase BigQuery server offset time
Background:
I'm having the Firebase analytics data exported to BigQuery. And I'm using cron jobs to crunch data in BigQuery for getting insight.
Problem:
To be able to only crunch delta data i.e. the data that has arrived since last time I ran my cron job I need a way to figure out the time when the data arrived at server, since the event_timestamp is generated at client and can be cached at client before sent.
Insights:
I have laborated with event_server_timestamp_offset (offset) which I thought I could use together with event_timestamp. But I was expecting the offset to only be positive but it can also be negative. And when I look at the MAX and MIN for the offset in the entire exported Firebase analytics dataset and re-calculate it to years instead of microseconds I can get more than 18 years offset.
Query:
SELECT
MAX(event_server_timestamp_offset)/(1000000*60*60*24) max_days,
MIN(event_server_timestamp_offset)/(1000000*60*60*24) min_days
FROM
`analytics_<project_id>.events_*`
Result: max_days=6784.485790436655,
min_days=-106.95833052104166
Question:
- How can I figure out the server arrival time for my Firebase exported BigQuery data so I can run cron jobs crunching only delta data?
- Can I use event_server_timestamp_offset together with event_timestamp? If so, how?
Best regards,
Daniel
firebase 
google-bigquery firebase-analytics asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
add a comment |
Background:
I'm having the Firebase analytics data exported to BigQuery. And I'm using cron jobs to crunch data in BigQuery for getting insight.
Problem:
To be able to only crunch delta data i.e. the data that has arrived since last time I ran my cron job I need a way to figure out the time when the data arrived at server, since the event_timestamp is generated at client and can be cached at client before sent.
Insights:
I have laborated with event_server_timestamp_offset (offset) which I thought I could use together with event_timestamp. But I was expecting the offset to only be positive but it can also be negative. And when I look at the MAX and MIN for the offset in the entire exported Firebase analytics dataset and re-calculate it to years instead of microseconds I can get more than 18 years offset.
Query:
SELECT
MAX(event_server_timestamp_offset)/(1000000*60*60*24) max_days,
MIN(event_server_timestamp_offset)/(1000000*60*60*24) min_days
FROM
`analytics_<project_id>.events_*`
Result: max_days=6784.485790436655,
min_days=-106.95833052104166
Question:
- How can I figure out the server arrival time for my Firebase exported BigQuery data so I can run cron jobs crunching only delta data?
- Can I use event_server_timestamp_offset together with event_timestamp? If so, how?
Best regards,
Daniel
firebase google-bigquery firebase-analytics asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33
add a comment |
Background:
I'm having the Firebase analytics data exported to BigQuery. And I'm using cron jobs to crunch data in BigQuery for getting insight.
Problem:
To be able to only crunch delta data i.e. the data that has arrived since last time I ran my cron job I need a way to figure out the time when the data arrived at server, since the event_timestamp is generated at client and can be cached at client before sent.
Insights:
I have laborated with event_server_timestamp_offset (offset) which I thought I could use together with event_timestamp. But I was expecting the offset to only be positive but it can also be negative. And when I look at the MAX and MIN for the offset in the entire exported Firebase analytics dataset and re-calculate it to years instead of microseconds I can get more than 18 years offset.
Query:
SELECT
MAX(event_server_timestamp_offset)/(1000000*60*60*24) max_days,
MIN(event_server_timestamp_offset)/(1000000*60*60*24) min_days
FROM
`analytics_<project_id>.events_*`
Result: max_days=6784.485790436655,
min_days=-106.95833052104166
Question:
- How can I figure out the server arrival time for my Firebase exported BigQuery data so I can run cron jobs crunching only delta data?
- Can I use event_server_timestamp_offset together with event_timestamp? If so, how?
Best regards,
Daniel
firebase google-bigquery firebase-analytics asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
Background:
I'm having the Firebase analytics data exported to BigQuery. And I'm using cron jobs to crunch data in BigQuery for getting insight.
Problem:
To be able to only crunch delta data i.e. the data that has arrived since last time I ran my cron job I need a way to figure out the time when the data arrived at server, since the event_timestamp is generated at client and can be cached at client before sent.
Insights:
I have laborated with event_server_timestamp_offset (offset) which I thought I could use together with event_timestamp. But I was expecting the offset to only be positive but it can also be negative. And when I look at the MAX and MIN for the offset in the entire exported Firebase analytics dataset and re-calculate it to years instead of microseconds I can get more than 18 years offset.
Query:
SELECT
MAX(event_server_timestamp_offset)/(1000000*60*60*24) max_days,
MIN(event_server_timestamp_offset)/(1000000*60*60*24) min_days
FROM
`analytics_<project_id>.events_*`
Result: max_days=6784.485790436655,
min_days=-106.95833052104166
Question:
- How can I figure out the server arrival time for my Firebase exported BigQuery data so I can run cron jobs crunching only delta data?
- Can I use event_server_timestamp_offset together with event_timestamp? If so, how?
Best regards,
Daniel
firebase google-bigquery firebase-analytics firebase google-bigquery firebase-analytics asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
edited Nov 13 '18 at 7:24
Daniel Petersson
asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
asked Nov 10 '18 at 12:34
Daniel PeterssonDaniel Petersson
12
12
Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33
add a comment |
Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33
Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33
Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33
add a comment |
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Ping ping ping ping
– Daniel Petersson
Nov 28 '18 at 13:33