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IBM JRE supplied as part of Sym 7.3.1 + Conductor 2.5 is incompatible with current use-case
Use-case: We have a client that uses Spark/Notebooks (PySpark kernel) to connect an external database via ODBC using kerberos. Whenever they try to connect to external DB using IBM supplied versions of JRE (see below) - they are encountering
"unable to find LoginModule class: com.sun.security.auth.module.Krb5LoginModule"
It is supposed to look for com.ibm.security.auth.module.Krb5LoginModule instead but that isn't the case.
[egoadmin@cbbenp13-cc017 ~]$ cd /opt/middleware/symphony/jre/
[egoadmin@cbbenp13-cc017 jre]$ ls -ltr
total 20
drwxr-xr-x. 3 egoadmin cbb 4096 May 11 12:20 8.0.6.0
drwxr-xr-x. 3 egoadmin cbb 4096 May 11 12:22 8.0.6.20
Both these versions (8.0.6.0 , 8.0.6.20) do not work for current clients use-case when we point the JAVA_HOME to the associated jre
Upon on checking with Support team on this issue, we were provided with OpenJDK (see below) - now, they are able to read data properly however encounter errors when they try to see the content. We need to understand what really happens behind show() that involves Kerberos
[egoadmin@cbbenp13-cc017 ~]$ cd /opt/middleware/symphony/jre/
[egoadmin@cbbenp13-cc017 jre]$ ls -ltr
total 20
drwxr-xr-x. 8 egoadmin cbb 4096 Jun 18 2020 jdk1.8.0_261 --- Provided by Ding from support team
df_table.show() throws an error
" Error: The service in process is not supported. Unable to find valid kerberos
principal for authentication"
This is odd to me, as the Spark read works , but when we view the dataframe it doesnt work - See below
(Below snippet works fine)
jdbcurl = "jdbc:oracle:thin:@//iaasn00095176.svr.us.jpmchase.net:6136/CPA_DEV_DP109649_180221220944_J_READWRITE"
df_table = spark.read.format("jdbc").option("url",jdbcurl) \
.option("dbtable", "(SELECT * FROM sys.dual)") \
.option("oracle.jdbc.allowedLogonVersion","8") \
.option("oracle.net.kerberos5_mutual_authentication","true") \
.option("oracle.net.authentication_services","( KERBEROS5)") \
.option("Driver","oracle.jdbc.OracleDriver") \
.option("oracle.net.kerberos5_cc_name","/cpa/fs1/deploy/keys_ea/krb5cc_309936") \
.load()
We also need your help to understand what happens behind .show()
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Fix has been delivered for Spark 3.0.1
Fix Central URL(s):
IBM Spectrum Conductor with Spark:
http://www.ibm.com/support/fixcentral/swg/selectFixes?product=ibm/Other+software/IBM+Spectrum+Conductor+with+Spark&release=All&platform=All&function=fixId&fixids=sc-2.5-build600720-jpmc%3Aplatform_cust_ac_key&includeSupersedes=0
Fix ID: sc-2.5-build600720-jpmc
What we want is either:
A) a new IBM JDK that uses the correct IBM driver and/or class to connect as expected from the error log.
Or
B) A fix so that it uses the default oracle log that is already provided in the JDK, and the error does not expect the IBM implemenation.
Hi IBM Team,
Has there been any update on this RFE. This is a blocker for one of our key clients.
Please feel free to setup a debug session if you would like to