com.microsoft.sqlserver.jdbc.SQLServerException

Question

hi developers,

I got stuck into an issue and this problem has already wasted my three days.

I am trying to connect PySpark with MSSQL but failed. I have tried almost all possible solutions available on internet but nothing worked for me.
MSSQL is setup on google compute engine vm with Centos OS.

df = spark.read.format("jdbc") \
.option("url", "jdbc:sqlserver://x.x.x.x;encrypt=false;databaseName=x.x.x") \
.option("dbtable", "x.x.x") \
.option("user", "x.x.x.x") \
.option("password", "x.x.x.x") \
.option("driver", "com.microsoft.sqlserver.jdbc.SQLServerDriver").load()

You can find the error snapshot in attachment. Please suggest me the solution, its really important for me.

thanks.

Answer 1

From the error message in the tiny screenshot:

The driver could not establish a secure connection to SQL Server by using SSL [...] "SQL Server returned an incomplete response"

From your connection string:

encrypt=false;

The first thing would be to allow encryption. The second thing is look at the SQL Server errorlog and configuration to see if it's forcing encryption (though a different error message should have appeared). The third is get a packet capture to make sure the SSL 3-way handshake it happening and that it is indeed responding to requests.

Answer 2

Hi @Anonymous ,

Could you install Network Monitor 3.4 on SQL server and SQL client to capture network package to check if you get any error message when SSL 3-way handshake happening? Did the version of SSL are same on SQL Server and client?

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