[Bug] Connect from PowerBI

[hanna-liashchuk]

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Describe the bug

Since Kyuubi is an alternative to STS, I've tried to connect to it from PowerBI (PB) for some reports but met some errors along the way. PB refuses to connect to version 1.5.2 with the error "The host and port specified for the connection do not seem to belong to a Spark server", connection to 1.4.1 works OK, but functionality is very limited, e.g. creating a "Top N" filter fails with an error.
After some investigation on the second one, I found out PB thinks that 1.4.1 is a Spark version and cuts functionality as it's too old.

Simba::SparkODBC::SOConnection::Connect: Server version (1.4.1-incubating) is lower than 2.1.0. Setting FETCH_FIRST fetch orientation as                 not supported because server lower than version 2.1.0 treats FETCH_FIRST as                 FETCH_NEXT.
Simba::SparkODBC::HardySettings::SetServerNotSupportsFetchFirst: +++++ enter +++++

ODBC logs can bee found here
SparkODBC-1.4.1.log
SparkODBC-1.5.2.log

I've built Kyuubi with spark version (3.2.1) instead of 1.4.1 and PB was working as expected. Under the hood, PB is using Microsoft Spark ODBC Driver.
Is there a way to configure Kyuubi metadata to work with Power BI? Otherwise it's a great tool that can't be used in companies that have found themselves in a vendor lock-in and since Power BI is a Microsoft tool, I believe there are enough of them

Affects Version(s)

1.4.1-incubating, 1.5.2-incubating

Kyuubi Server Log Output

No response

Kyuubi Engine Log Output

No response

Kyuubi Server Configurations

No response

Kyuubi Engine Configurations

No response

Additional context

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

[pan3793]

I'm sorry I'm not familiar w/ PB and ODBC, and I think the Microsoft Spark ODBC Driver is not an open-source project.

I see Simba::SparkODBC from your logs, and we got reported that "Simba" ODBC drvier use a tricky way to retrieve server‘s version, please try to set spark.sql.hive.version=2.3.9 and spark.sql.hive.metastore.version=2.3.9 (actually I forget which one take effect) in your $SPAKR_HOME/spark-defaults.conf (2.3.9 is chosen because you are using Spark 3.2.1)

[pan3793]

And for Simba::SparkODBC::SOConnection::Connect: Server version (1.4.1-incubating) ...

The DBMS_NAME and DBMS_VER are defined at
https://github.com/apache/incubator-kyuubi/blob/95cb57e80bf9ca8dd0510df3d45c52d9f22ef448/kyuubi-common/src/main/scala/org/apache/kyuubi/session/AbstractSession.scala#L110-L111
You can change it to "2.3.9" to see what will happen, if it does work, I think we can make these two values configurable.

[hanna-liashchuk]

hi @pan3793, thanks for your help
setting spark.sql.* params didn't help, but changing the source code - did!
So far, everything seems to be working fine.
I checked with 1.4.1-incubating version, let me check with 1.5.2

[hanna-liashchuk]

So, great news, 1.5.2 with the code edit is working as well :)

[pan3793]

Glad to see it works! Would you like to send a PR to "make these two values configurable" and(or) add a document in "quick start" section to share how to use Power BI to connect Kyuubi?

[hanna-liashchuk]

Yes, would like to. Except, this would be my first commit to kyuubi project, so guide me here :)
By configurable you mean that a user can override that value in kyuubi-defaults.conf via some parameter?

[pan3793]

this would be my first commit to kyuubi project, so guide me here :)

Yes, of course.

By configurable you mean that a user can override that value in kyuubi-defaults.conf via some parameter?

Yes. To achieve this, you should add the ConfigEntrys(they should be named as kyuubi.server.cli.dbms.name and kyuubi.server.cli.dbms.ver or something) in KyuubiConf, and refer to them in AbstractSession#getInfo, then we can configure them in kyuubi-defaults.conf

For documents, you can add a new page in the folder docs/quick_start and follow the https://kyuubi.readthedocs.io/en/latest/develop_tools/build_document.html to build and preview the document site in local

[pan3793]

This issue has been addressed in #3122, w/ configuration kyuubi.server.info.provider=ENGINE, the GetInfo will return the engine(e.g. Spark)'s information instead of Kyuubi.

The feature will be available in 1.6.1-incubating.

[pan3793]

cc @WANGHui2022, since you reported this issue in another channel.

[marszd]

@hanna-liashchuk I used PowerBi to connect kyuub_1.6.0, but there was a problem. Because there was an extra layer of "spark_catalog" in kyuubi's schema, PB would treat the database as a table. I saw that you also used PB to connect kyuubi, could you please give me some advice.

1. ODBC configuration
   

2. Problem phenomenon
   

[hanna-liashchuk]

@marszd we are using Spark connector with protocol: Standart. Have you tried using it?