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graphman Frequent Visitor
Frequent Visitor

Hive table ODBC data not cached in powerBI

My setup: PowerBI Desktop connecting to Hiveserver2 using Hortonworks ODBC driver

 

Issue: When I issue "Get Data" and load a Hive table, PowerBI loads all data from the table. Since DirectQuery is not supported for ODBC sources, this data is now within my laptop. Then I perform "Edit queries" and try to "Add new column" and then press "Close & Apply". When I do this, I see that PowerBI queries the Hive table again for all data i.e. importing the table again fully. This is an un-necessary step and slows down my report building process significantly. I am on a high-latency line.

 

Since DirectQuery is not supported in ODBC , I fail to understand why PowerBI is repeatedly importing this data without any valid rationale. Please help.

Thanks for your support.

2 REPLIES 2
Moderator v-sihou-msft
Moderator

Re: Hive table ODBC data not cached in powerBI

@graphman

 

In Power Query, once you make changes which will add steps, it will execute entire Power Query when you "Save & Close" Query Editor. That's the reason why it will re-import the table. 

 

Regards,

graphman Frequent Visitor
Frequent Visitor

Re: Hive table ODBC data not cached in powerBI

Hi Simon,

 

Thanks for the answer.

 

If PBI is creating the new column through a HS2 query, then we can definitely see the rationale.

 

But it looks like a regular import of the entire table again – which hardly serves any purpose. It hurts when we work on a high-latency line.

(or)

Am I missing something here?

 

Thanks, 

Best,

Graphman

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